smesh/src/SMESH_I/SMESH_Gen_i.cxx

// Copyright (C) 2007-2012  CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
//  File   : SMESH_Gen_i.cxx
//  Author : Paul RASCLE, EDF
//  Module : SMESH

#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Iterator.hxx>
#include <TopoDS_Compound.hxx>
#include <TopoDS_CompSolid.hxx>
#include <TopoDS_Solid.hxx>
#include <TopoDS_Shell.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Wire.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopoDS_Shape.hxx>
#include <TopTools_MapOfShape.hxx>
#include <TopTools_IndexedMapOfShape.hxx>
#include <TopTools_ListOfShape.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <gp_Pnt.hxx>
#include <BRep_Tool.hxx>
#include <TCollection_AsciiString.hxx>
#include <OSD.hxx>

#ifdef WNT
 #include <windows.h>
 #include <process.h>
#else
 #include <dlfcn.h>
#endif

#ifdef WNT
 #define LibHandle HMODULE
 #define LoadLib( name ) LoadLibrary( name )
 #define GetProc GetProcAddress
 #define UnLoadLib( handle ) FreeLibrary( handle );
#else
 #define LibHandle void*
 #define LoadLib( name ) dlopen( name, RTLD_LAZY )
 #define GetProc dlsym
 #define UnLoadLib( handle ) dlclose( handle );
#endif

#include "SMESH_Gen_i.hxx"

#include "SMDS_EdgePosition.hxx"
#include "SMDS_FacePosition.hxx"
#include "SMDS_PolyhedralVolumeOfNodes.hxx"
#include "SMDS_SetIterator.hxx"
#include "SMDS_SpacePosition.hxx"
#include "SMDS_VertexPosition.hxx"
#include "SMESHDS_Document.hxx"
#include "SMESHDS_Group.hxx"
#include "SMESHDS_GroupOnGeom.hxx"
#include "SMESH_Algo_i.hxx"
#include "SMESH_File.hxx"
#include "SMESH_Group.hxx"
#include "SMESH_Group_i.hxx"
#include "SMESH_Hypothesis.hxx"
#include "SMESH_Hypothesis_i.hxx"
#include "SMESH_Mesh.hxx"
#include "SMESH_MeshEditor.hxx"
#include "SMESH_Mesh_i.hxx"
#include "SMESH_PreMeshInfo.hxx"
#include "SMESH_PythonDump.hxx"

#include CORBA_SERVER_HEADER(SMESH_Group)
#include CORBA_SERVER_HEADER(SMESH_Filter)
#include CORBA_SERVER_HEADER(SMESH_MeshEditor)

#include "DriverMED_W_SMESHDS_Mesh.h"
#include "DriverMED_R_SMESHDS_Mesh.h"
#ifdef WITH_CGNS
#include "DriverCGNS_Read.hxx"
#endif
#include "memoire.h"

#include <GEOM_Client.hxx>

#include <Basics_Utils.hxx>
#include <HDFOI.hxx>
#include <OpUtil.hxx>
#include <SALOMEDS_Tool.hxx>
#include <SALOME_Container_i.hxx>
#include <SALOME_LifeCycleCORBA.hxx>
#include <SALOME_NamingService.hxx>
#include <Utils_CorbaException.hxx>
#include <Utils_ExceptHandlers.hxx>
#include <Utils_SINGLETON.hxx>
#include <utilities.h>

#include CORBA_CLIENT_HEADER(SALOME_ModuleCatalog)
#include CORBA_CLIENT_HEADER(SALOME_Session)

#include <map>
#include <fstream>
#include <cstdio>

using namespace std;
using SMESH::TPythonDump;
using SMESH::TVar;

#define NUM_TMP_FILES 2

#ifdef _DEBUG_
static int MYDEBUG = 0;
#else
static int MYDEBUG = 0;
#endif

// Static variables definition
GEOM::GEOM_Gen_var      SMESH_Gen_i::myGeomGen = GEOM::GEOM_Gen::_nil();
CORBA::ORB_var          SMESH_Gen_i::myOrb;
PortableServer::POA_var SMESH_Gen_i::myPoa;
SALOME_NamingService*   SMESH_Gen_i::myNS  = NULL;
SALOME_LifeCycleCORBA*  SMESH_Gen_i::myLCC = NULL;
SMESH_Gen_i*            SMESH_Gen_i::mySMESHGen = NULL;


const int nbElemPerDiagonal = 10;

//=============================================================================
/*!
 *  GetServant [ static ]
 *
 *  Get servant of the CORBA object
 */
//=============================================================================

PortableServer::ServantBase_var SMESH_Gen_i::GetServant( CORBA::Object_ptr theObject )
{
  if( CORBA::is_nil( theObject ) || CORBA::is_nil( GetPOA() ) )
    return NULL;
  try {
    PortableServer::Servant aServant = GetPOA()->reference_to_servant( theObject );
    return aServant;
  }
  catch (...) {
    INFOS( "GetServant - Unknown exception was caught!!!" );
    return NULL;
  }
}

//=============================================================================
/*!
 *  SObjectToObject [ static ]
 *
 *  Get CORBA object corresponding to the SALOMEDS::SObject
 */
//=============================================================================

CORBA::Object_var SMESH_Gen_i::SObjectToObject( SALOMEDS::SObject_ptr theSObject )
{
  SALOMEDS::GenericAttribute_var anAttr;
  CORBA::Object_var anObj;
  if ( !theSObject->_is_nil() ) {
    try {
      if( theSObject->FindAttribute( anAttr, "AttributeIOR" ) ) {
        SALOMEDS::AttributeIOR_var anIOR  = SALOMEDS::AttributeIOR::_narrow( anAttr );
        CORBA::String_var aValue = anIOR->Value();
        if( strcmp( aValue, "" ) != 0 )
          anObj = GetORB()->string_to_object( aValue );
        }
    }
    catch( ... ) {
      INFOS( "SObjectToObject - Unknown exception was caught!!!" );
    }
  }
  return anObj;
}

//=============================================================================
/*!
 *  GetNS [ static ]
 *
 *  Get SALOME_NamingService object
 */
//=============================================================================

SALOME_NamingService* SMESH_Gen_i::GetNS()
{
  if ( myNS == NULL ) {
    myNS = SINGLETON_<SALOME_NamingService>::Instance();
    ASSERT(SINGLETON_<SALOME_NamingService>::IsAlreadyExisting());
    myNS->init_orb( GetORB() );
  }
  return myNS;
}

//=============================================================================
/*!
 *  GetLCC [ static ]
 *
 *  Get SALOME_LifeCycleCORBA object
 */
//=============================================================================
SALOME_LifeCycleCORBA*  SMESH_Gen_i::GetLCC() {
  if ( myLCC == NULL ) {
    myLCC = new SALOME_LifeCycleCORBA( GetNS() );
  }
  return myLCC;
}


//=============================================================================
/*!
 *  GetGeomEngine [ static ]
 *
 *  Get GEOM::GEOM_Gen reference
 */
//=============================================================================
GEOM::GEOM_Gen_ptr SMESH_Gen_i::GetGeomEngine() {
  //CCRT GEOM::GEOM_Gen_var aGeomEngine =
  //CCRT   GEOM::GEOM_Gen::_narrow( GetLCC()->FindOrLoad_Component("FactoryServer","GEOM") );
  //CCRT return aGeomEngine._retn();
  if(CORBA::is_nil(myGeomGen))
  {
    Engines::EngineComponent_ptr temp=GetLCC()->FindOrLoad_Component("FactoryServer","GEOM");
    myGeomGen=GEOM::GEOM_Gen::_narrow(temp);
  }
  return myGeomGen;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::SMESH_Gen_i
 *
 *  Default constructor: not for use
 */
//=============================================================================

SMESH_Gen_i::SMESH_Gen_i()
{
  INFOS( "SMESH_Gen_i::SMESH_Gen_i : default constructor" );
}

//=============================================================================
/*!
 *  SMESH_Gen_i::SMESH_Gen_i
 *
 *  Standard constructor, used with Container
 */
//=============================================================================

SMESH_Gen_i::SMESH_Gen_i( CORBA::ORB_ptr            orb,
                          PortableServer::POA_ptr   poa,
                          PortableServer::ObjectId* contId,
                          const char*               instanceName,
                          const char*               interfaceName )
     : Engines_Component_i( orb, poa, contId, instanceName, interfaceName )
{
  MESSAGE( "SMESH_Gen_i::SMESH_Gen_i : standard constructor" );

  myOrb = CORBA::ORB::_duplicate(orb);
  myPoa = PortableServer::POA::_duplicate(poa);

  _thisObj = this ;
  _id = myPoa->activate_object( _thisObj );

  myIsEmbeddedMode = false;
  myShapeReader = NULL;  // shape reader
  mySMESHGen = this;
  myIsHistoricalPythonDump = true;
  myToForgetMeshDataOnHypModif = false;

  // set it in standalone mode only
  //OSD::SetSignal( true );

  // 0020605: EDF 1190 SMESH: Display performance. 80 seconds for 52000 cells.
  // find out mode (embedded or standalone) here else
  // meshes created before calling SMESH_Client::GetSMESHGen(), which calls
  // SMESH_Gen_i::SetEmbeddedMode(), have wrong IsEmbeddedMode flag
  if ( SALOME_NamingService* ns = GetNS() )
  {
    CORBA::Object_var obj = ns->Resolve( "/Kernel/Session" );
    SALOME::Session_var session = SALOME::Session::_narrow( obj ) ;
    if ( !session->_is_nil() )
    {
      CORBA::String_var str_host = session->getHostname();
      CORBA::Long        s_pid = session->getPID();
      string my_host = Kernel_Utils::GetHostname();
#ifdef WNT
      long    my_pid = (long)_getpid();
#else
      long    my_pid = (long) getpid();
#endif
      SetEmbeddedMode( s_pid == my_pid && my_host == str_host.in() );
    }
  }
}

//=============================================================================
/*!
 *  SMESH_Gen_i::~SMESH_Gen_i
 *
 *  Destructor
 */
//=============================================================================

SMESH_Gen_i::~SMESH_Gen_i()
{
  MESSAGE( "SMESH_Gen_i::~SMESH_Gen_i" );

  // delete hypothesis creators
  map<string, GenericHypothesisCreator_i*>::iterator itHyp;
  for (itHyp = myHypCreatorMap.begin(); itHyp != myHypCreatorMap.end(); itHyp++)
  {
    delete (*itHyp).second;
  }
  myHypCreatorMap.clear();

  // Clear study contexts data
  map<int, StudyContext*>::iterator it;
  for ( it = myStudyContextMap.begin(); it != myStudyContextMap.end(); ++it ) {
    delete it->second;
  }
  myStudyContextMap.clear();
  // delete shape reader
  if ( !myShapeReader )
    delete myShapeReader;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::createHypothesis
 *
 *  Create hypothesis of given type
 */
//=============================================================================
SMESH::SMESH_Hypothesis_ptr SMESH_Gen_i::createHypothesis(const char* theHypName,
                                                          const char* theLibName)
     throw (SALOME::SALOME_Exception)
{
  /* It's Need to tranlate lib name for WIN32 or X platform */
  char* aPlatformLibName = 0;
  if ( theLibName && theLibName[0] != '\0'  )
  {
    int libNameLen = strlen(theLibName);
    //check for old format "libXXXXXXX.so"
    if (libNameLen > 7 &&
        !strncmp( theLibName, "lib", 3 ) &&
        !strcmp( theLibName+libNameLen-3, ".so" ))
    {
      //the old format
#ifdef WNT
      aPlatformLibName = new char[libNameLen - 1];
      aPlatformLibName[0] = '\0';
      aPlatformLibName = strncat( aPlatformLibName, theLibName+3, libNameLen-6  );
      aPlatformLibName = strcat( aPlatformLibName, ".dll" );
      aPlatformLibName[libNameLen - 2] = '\0';
#else
      aPlatformLibName = new char[ libNameLen + 1];
      aPlatformLibName[0] = '\0';
      aPlatformLibName = strcat( aPlatformLibName, theLibName );
      aPlatformLibName[libNameLen] = '\0';
#endif
    }
    else
    {
      //try to use new format
#ifdef WNT
      aPlatformLibName = new char[ libNameLen + 5 ];
      aPlatformLibName[0] = '\0';
      aPlatformLibName = strcat( aPlatformLibName, theLibName );
      aPlatformLibName = strcat( aPlatformLibName, ".dll" );
#else
      aPlatformLibName = new char[ libNameLen + 7 ];
      aPlatformLibName[0] = '\0';
      aPlatformLibName = strcat( aPlatformLibName, "lib" );
      aPlatformLibName = strcat( aPlatformLibName, theLibName );
      aPlatformLibName = strcat( aPlatformLibName, ".so" );
#endif
    }
  }


  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "Create Hypothesis <" << theHypName << "> from " << aPlatformLibName/*theLibName*/);

  // create a new hypothesis object servant
  SMESH_Hypothesis_i* myHypothesis_i = 0;
  SMESH::SMESH_Hypothesis_var hypothesis_i;

  try
  {
    // check, if creator for this hypothesis type already exists
    if (myHypCreatorMap.find(string(theHypName)) == myHypCreatorMap.end())
    {
      // load plugin library
      if(MYDEBUG) MESSAGE("Loading server meshers plugin library ...");
      LibHandle libHandle = LoadLib( aPlatformLibName/*theLibName*/ );
      if (!libHandle)
      {
        // report any error, if occured
#ifndef WNT
        const char* anError = dlerror();
        throw(SALOME_Exception(anError));
#else
        throw(SALOME_Exception(LOCALIZED( "Can't load server meshers plugin library" )));
#endif
      }

      // get method, returning hypothesis creator
      if(MYDEBUG) MESSAGE("Find GetHypothesisCreator() method ...");
      typedef GenericHypothesisCreator_i* (*GetHypothesisCreator)(const char* theHypName);
      GetHypothesisCreator procHandle =
        (GetHypothesisCreator)GetProc( libHandle, "GetHypothesisCreator" );
      if (!procHandle)
      {
        throw(SALOME_Exception(LOCALIZED("bad hypothesis plugin library")));
        UnLoadLib(libHandle);
      }

      // get hypothesis creator
      if(MYDEBUG) MESSAGE("Get Hypothesis Creator for " << theHypName);
      GenericHypothesisCreator_i* aCreator = procHandle(theHypName);
      if (!aCreator)
      {
        throw(SALOME_Exception(LOCALIZED("no such a hypothesis in this plugin")));
      }

      // map hypothesis creator to a hypothesis name
      myHypCreatorMap[string(theHypName)] = aCreator;
    }

    // create a new hypothesis object, store its ref. in studyContext
    if(MYDEBUG) MESSAGE("Create Hypothesis " << theHypName);
    myHypothesis_i =
      myHypCreatorMap[string(theHypName)]->Create(myPoa, GetCurrentStudyID(), &myGen);
    myHypothesis_i->SetLibName(aPlatformLibName/*theLibName*/); // for persistency assurance
  }
  catch (SALOME_Exception& S_ex)
  {
    THROW_SALOME_CORBA_EXCEPTION(S_ex.what(), SALOME::BAD_PARAM);
  }

  if ( aPlatformLibName )
    delete[] aPlatformLibName;

  if (!myHypothesis_i)
    return hypothesis_i._retn();

  // activate the CORBA servant of hypothesis
  hypothesis_i = SMESH::SMESH_Hypothesis::_narrow( myHypothesis_i->_this() );
  int nextId = RegisterObject( hypothesis_i );
  if(MYDEBUG) MESSAGE( "Add hypo to map with id = "<< nextId );

  return hypothesis_i._retn();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::createMesh
 *
 *  Create empty mesh on shape
 */
//=============================================================================
SMESH::SMESH_Mesh_ptr SMESH_Gen_i::createMesh()
     throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::createMesh" );

  // Get or create the GEOM_Client instance
  try {
    // create a new mesh object servant, store it in a map in study context
    SMESH_Mesh_i* meshServant = new SMESH_Mesh_i( GetPOA(), this, GetCurrentStudyID() );
    // create a new mesh object
    MESSAGE("myIsEmbeddedMode " << myIsEmbeddedMode);
    meshServant->SetImpl( myGen.CreateMesh( GetCurrentStudyID(), myIsEmbeddedMode ));

    // activate the CORBA servant of Mesh
    SMESH::SMESH_Mesh_var mesh = SMESH::SMESH_Mesh::_narrow( meshServant->_this() );
    int nextId = RegisterObject( mesh );
    if(MYDEBUG) MESSAGE( "Add mesh to map with id = "<< nextId);
    return mesh._retn();
  }
  catch (SALOME_Exception& S_ex) {
    THROW_SALOME_CORBA_EXCEPTION( S_ex.what(), SALOME::BAD_PARAM );
  }
  return SMESH::SMESH_Mesh::_nil();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::GetShapeReader
 *
 *  Get shape reader
 */
//=============================================================================
GEOM_Client* SMESH_Gen_i::GetShapeReader()
{
  // create shape reader if necessary
  if ( !myShapeReader )
    myShapeReader = new GEOM_Client(GetContainerRef());
  ASSERT( myShapeReader );
  return myShapeReader;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::SetGeomEngine
 *
 *  Set GEOM::GEOM_Gen reference
 */
//=============================================================================
//GEOM::GEOM_Gen_ptr SMESH_Gen_i::SetGeomEngine( const char* containerLoc )
void SMESH_Gen_i::SetGeomEngine( GEOM::GEOM_Gen_ptr geomcompo )
{
  //Engines::Component_ptr temp=GetLCC()->FindOrLoad_Component(containerLoc,"GEOM");
  //myGeomGen=GEOM::GEOM_Gen::_narrow(temp);
  myGeomGen=GEOM::GEOM_Gen::_duplicate(geomcompo);
  //return myGeomGen;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::SetEmbeddedMode
 *
 *  Set current mode
 */
//=============================================================================

void SMESH_Gen_i::SetEmbeddedMode( CORBA::Boolean theMode )
{
  myIsEmbeddedMode = theMode;
  MESSAGE("myIsEmbeddedMode " << myIsEmbeddedMode);

  if ( !myIsEmbeddedMode ) {
    //PAL10867: disable signals catching with "noexcepthandler" option
    char* envNoCatchSignals = getenv("NOT_INTERCEPT_SIGNALS");
    if (!envNoCatchSignals || !atoi(envNoCatchSignals))
    {
      bool raiseFPE;
#ifdef _DEBUG_
      raiseFPE = true;
      char* envDisableFPE = getenv("DISABLE_FPE");
      if (envDisableFPE && atoi(envDisableFPE))
        raiseFPE = false;
#else
      raiseFPE = false;
#endif
      OSD::SetSignal( raiseFPE );
    }
    // else OSD::SetSignal() is called in GUI
  }
}

//=============================================================================
/*!
 *  SMESH_Gen_i::IsEmbeddedMode
 *
 *  Get current mode
 */
//=============================================================================

CORBA::Boolean SMESH_Gen_i::IsEmbeddedMode()
{
  return myIsEmbeddedMode;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::SetCurrentStudy
 *
 *  Set current study
 */
//=============================================================================

void SMESH_Gen_i::SetCurrentStudy( SALOMEDS::Study_ptr theStudy )
{
  setCurrentStudy( theStudy );
}

void SMESH_Gen_i::setCurrentStudy( SALOMEDS::Study_ptr theStudy,
                                   bool                theStudyIsBeingClosed)
{
  int curStudyId = GetCurrentStudyID();
  myCurrentStudy = SALOMEDS::Study::_duplicate( theStudy );
  // create study context, if it doesn't exist and set current study
  int studyId = GetCurrentStudyID();
  if ( myStudyContextMap.find( studyId ) == myStudyContextMap.end() ) {
    myStudyContextMap[ studyId ] = new StudyContext;
  }

  // myCurrentStudy may be nil
  if ( !theStudyIsBeingClosed && !CORBA::is_nil( myCurrentStudy ) ) {
    SALOMEDS::StudyBuilder_var aStudyBuilder = myCurrentStudy->NewBuilder();
    if( !myCurrentStudy->FindComponent( "GEOM" )->_is_nil() )
      aStudyBuilder->LoadWith( myCurrentStudy->FindComponent( "GEOM" ), GetGeomEngine() );

    // NPAL16168, issue 0020210
    // Let meshes update their data depending on GEOM groups that could change
    if ( curStudyId != studyId )
    {
      //SALOMEDS::SComponent_var me =  PublishComponent( myCurrentStudy );
      SALOMEDS::SComponent_var me = SALOMEDS::SComponent::_narrow
        ( myCurrentStudy->FindComponent( ComponentDataType() ) );
      if ( !me->_is_nil() ) {
        SALOMEDS::ChildIterator_var anIter = myCurrentStudy->NewChildIterator( me );
        for ( ; anIter->More(); anIter->Next() ) {
          SALOMEDS::SObject_var so = anIter->Value();
          CORBA::Object_var    ior = SObjectToObject( so );
          if ( SMESH_Mesh_i*  mesh = SMESH::DownCast<SMESH_Mesh_i*>( ior ))
            mesh->CheckGeomGroupModif();
        }
      }
    }
  }
}

//=============================================================================
/*!
 *  SMESH_Gen_i::GetCurrentStudy
 *
 *  Get current study
 */
//=============================================================================

SALOMEDS::Study_ptr SMESH_Gen_i::GetCurrentStudy()
{
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::GetCurrentStudy: study Id = " << GetCurrentStudyID() );
  return SALOMEDS::Study::_duplicate( myCurrentStudy );
}

//=============================================================================
/*!
 *  SMESH_Gen_i::GetCurrentStudyContext
 *
 *  Get current study context
 */
//=============================================================================
StudyContext* SMESH_Gen_i::GetCurrentStudyContext()
{
  if ( !CORBA::is_nil( myCurrentStudy ) &&
      myStudyContextMap.find( GetCurrentStudyID() ) != myStudyContextMap.end() )
    return myStudyContextMap[ myCurrentStudy->StudyId() ];
  else
    return 0;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::CreateHypothesis
 *
 *  Create hypothesis/algorothm of given type and publish it in the study
 */
//=============================================================================

SMESH::SMESH_Hypothesis_ptr SMESH_Gen_i::CreateHypothesis( const char* theHypName,
                                                           const char* theLibName )
     throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  // Create hypothesis/algorithm
  SMESH::SMESH_Hypothesis_var hyp = this->createHypothesis( theHypName, theLibName );

  // Publish hypothesis/algorithm in the study
  if ( CanPublishInStudy( hyp ) ) {
    SALOMEDS::SObject_var aSO = PublishHypothesis( myCurrentStudy, hyp );
    if ( !aSO->_is_nil() ) {
      // Update Python script
      TPythonDump() << aSO << " = " << this << ".CreateHypothesis('"
                    << theHypName << "', '" << theLibName << "')";
    }
  }

  return hyp._retn();
}

//================================================================================
/*!
 * \brief Return a hypothesis holding parameter values corresponding either to the mesh
 * existing on the given geometry or to size of the geometry.
 *  \param theHypType - hypothesis type name
 *  \param theLibName - plugin library name
 *  \param theMesh - The mesh of interest
 *  \param theGeom - The shape to get parameter values from
 *  \retval SMESH::SMESH_Hypothesis_ptr - The returned hypothesis may be the one existing
 *     in a study and used to compute the mesh, or a temporary one created just to pass
 *     parameter values
 */
//================================================================================

SMESH::SMESH_Hypothesis_ptr
SMESH_Gen_i::GetHypothesisParameterValues (const char*           theHypType,
                                           const char*           theLibName,
                                           SMESH::SMESH_Mesh_ptr theMesh,
                                           GEOM::GEOM_Object_ptr theGeom,
                                           CORBA::Boolean        byMesh)
  throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if ( byMesh && CORBA::is_nil( theMesh ) )
    return SMESH::SMESH_Hypothesis::_nil();
  if ( byMesh && CORBA::is_nil( theGeom ) )
    return SMESH::SMESH_Hypothesis::_nil();

  // -----------------------------------------------
  // find hypothesis used to mesh theGeom
  // -----------------------------------------------

  // get mesh and shape
  SMESH_Mesh_i* meshServant = SMESH::DownCast<SMESH_Mesh_i*>( theMesh );
  TopoDS_Shape shape = GeomObjectToShape( theGeom );
  if ( byMesh && ( !meshServant || meshServant->NbNodes()==0 || shape.IsNull() ))
    return SMESH::SMESH_Hypothesis::_nil();
  ::SMESH_Mesh* mesh = meshServant ? &meshServant->GetImpl() : (::SMESH_Mesh*)0;

  // create a temporary hypothesis to know its dimention
  SMESH::SMESH_Hypothesis_var tmpHyp = this->createHypothesis( theHypType, theLibName );
  SMESH_Hypothesis_i* hypServant = SMESH::DownCast<SMESH_Hypothesis_i*>( tmpHyp );
  if ( !hypServant )
    return SMESH::SMESH_Hypothesis::_nil();
  ::SMESH_Hypothesis* hyp = hypServant->GetImpl();

  if ( byMesh ) {
    // look for a hypothesis of theHypType used to mesh the shape
    if ( myGen.GetShapeDim( shape ) == hyp->GetDim() )
    {
      // check local shape
      SMESH::ListOfHypothesis_var aHypList = theMesh->GetHypothesisList( theGeom );
      int nbLocalHyps = aHypList->length();
      for ( int i = 0; i < nbLocalHyps; i++ )
        if ( strcmp( theHypType, aHypList[i]->GetName() ) == 0 ) // FOUND local!
          return SMESH::SMESH_Hypothesis::_duplicate( aHypList[i] );
      // check super shapes
      TopTools_ListIteratorOfListOfShape itShape( mesh->GetAncestors( shape ));
      while ( nbLocalHyps == 0 && itShape.More() ) {
        GEOM::GEOM_Object_ptr geomObj = ShapeToGeomObject( itShape.Value() );
        if ( ! CORBA::is_nil( geomObj )) {
          SMESH::ListOfHypothesis_var aHypList = theMesh->GetHypothesisList( geomObj );
          nbLocalHyps = aHypList->length();
          for ( int i = 0; i < nbLocalHyps; i++ )
            if ( strcmp( theHypType, aHypList[i]->GetName() ) == 0 ) // FOUND global!
              return SMESH::SMESH_Hypothesis::_duplicate( aHypList[i] );
        }
        itShape.Next();
      }
    }

    // let the temporary hypothesis find out somehow parameter values by mesh
    if ( hyp->SetParametersByMesh( mesh, shape ))
      return SMESH::SMESH_Hypothesis::_duplicate( tmpHyp );
  }
  else {
    double diagonal = 0;
    if ( mesh )
      diagonal = mesh->GetShapeDiagonalSize();
    else
      diagonal = ::SMESH_Mesh::GetShapeDiagonalSize( shape );
    ::SMESH_Hypothesis::TDefaults dflts;
    dflts._elemLength = diagonal / myGen.GetBoundaryBoxSegmentation();
    dflts._nbSegments = myGen.GetDefaultNbSegments();
    dflts._shape      = &shape;
    // let the temporary hypothesis initialize it's values
    if ( hyp->SetParametersByDefaults( dflts, mesh ))
      return SMESH::SMESH_Hypothesis::_duplicate( tmpHyp );
  }

  return SMESH::SMESH_Hypothesis::_nil();
}

//=============================================================================
/*!
 * Sets number of segments per diagonal of boundary box of geometry by which
 * default segment length of appropriate 1D hypotheses is defined
 */
//=============================================================================

void SMESH_Gen_i::SetBoundaryBoxSegmentation( CORBA::Long theNbSegments )
  throw ( SALOME::SALOME_Exception )
{
  if ( theNbSegments > 0 )
    myGen.SetBoundaryBoxSegmentation( int( theNbSegments ));
  else
    THROW_SALOME_CORBA_EXCEPTION( "non-positive number of segments", SALOME::BAD_PARAM );
}
//=============================================================================
  /*!
   * \brief Sets default number of segments per edge
   */
//=============================================================================
void SMESH_Gen_i::SetDefaultNbSegments(CORBA::Long theNbSegments)
  throw ( SALOME::SALOME_Exception )
{
  if ( theNbSegments > 0 )
    myGen.SetDefaultNbSegments( int(theNbSegments) );
  else
    THROW_SALOME_CORBA_EXCEPTION( "non-positive number of segments", SALOME::BAD_PARAM );
}

//=============================================================================
/*!
  Set an option value
*/
//=============================================================================

void SMESH_Gen_i::SetOption(const char* name, const char* value)
{
  if ( name && value && strlen( value ) > 0 )
  {
    string msgToGUI; 
    if ( strcmp(name, "historical_python_dump") == 0 )
    {
      myIsHistoricalPythonDump = ( value[0] == '1' || toupper(value[0]) == 'T' ); // 1 || true
      msgToGUI = "preferences/SMESH/historical_python_dump/";
      msgToGUI += myIsHistoricalPythonDump ? "true" : "false";
    }
    else if ( strcmp(name, "forget_mesh_on_hyp_modif") == 0 )
    {
      myToForgetMeshDataOnHypModif = ( value[0] == '1' || toupper(value[0]) == 'T' ); // 1 || true
      msgToGUI = "preferences/SMESH/forget_mesh_on_hyp_modif/";
      msgToGUI += myToForgetMeshDataOnHypModif ? "true" : "false";
    }

    // update preferences in case if SetOption() is invoked from python console
    if ( !msgToGUI.empty() )
    {
      CORBA::Object_var obj = SMESH_Gen_i::GetNS()->Resolve( "/Kernel/Session" );
      SALOME::Session_var session = SALOME::Session::_narrow( obj );
      if ( !CORBA::is_nil( session ) )
        session->emitMessageOneWay(msgToGUI.c_str());
    }
  }
}

//=============================================================================
/*!
  Return an option value
*/
//=============================================================================

char* SMESH_Gen_i::GetOption(const char* name)
{
  if ( name )
  {
    if ( strcmp(name, "historical_python_dump") == 0 )
    {
      return CORBA::string_dup( myIsHistoricalPythonDump ? "true" : "false" );
    }
    if ( strcmp(name, "forget_mesh_on_hyp_modif") == 0 )
    {
      return CORBA::string_dup( myToForgetMeshDataOnHypModif ? "true" : "false" );
    }
  }
  return CORBA::string_dup( "" );
}

//=============================================================================
/*!
 *  SMESH_Gen_i::CreateMesh
 *
 *  Create empty mesh on a shape and publish it in the study
 */
//=============================================================================

SMESH::SMESH_Mesh_ptr SMESH_Gen_i::CreateMesh( GEOM::GEOM_Object_ptr theShapeObject )
     throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::CreateMesh" );
  // create mesh
  SMESH::SMESH_Mesh_var mesh = this->createMesh();
  // set shape
  SMESH_Mesh_i* meshServant = SMESH::DownCast<SMESH_Mesh_i*>( mesh );
  ASSERT( meshServant );
  meshServant->SetShape( theShapeObject );

  // publish mesh in the study
  if ( CanPublishInStudy( mesh ) ) {
    SALOMEDS::StudyBuilder_var aStudyBuilder = myCurrentStudy->NewBuilder();
    aStudyBuilder->NewCommand();  // There is a transaction
    SALOMEDS::SObject_var aSO = PublishMesh( myCurrentStudy, mesh.in() );
    aStudyBuilder->CommitCommand();
    if ( !aSO->_is_nil() ) {
      // Update Python script
      TPythonDump() << aSO << " = " << this << ".CreateMesh(" << theShapeObject << ")";
    }
  }

  return mesh._retn();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::CreateEmptyMesh
 *
 *  Create empty mesh
 */
//=============================================================================

SMESH::SMESH_Mesh_ptr SMESH_Gen_i::CreateEmptyMesh()
     throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::CreateMesh" );
  // create mesh
  SMESH::SMESH_Mesh_var mesh = this->createMesh();

  // publish mesh in the study
  if ( CanPublishInStudy( mesh ) ) {
    SALOMEDS::StudyBuilder_var aStudyBuilder = myCurrentStudy->NewBuilder();
    aStudyBuilder->NewCommand();  // There is a transaction
    SALOMEDS::SObject_var aSO = PublishMesh( myCurrentStudy, mesh.in() );
    aStudyBuilder->CommitCommand();
    if ( !aSO->_is_nil() ) {
      // Update Python script
      TPythonDump() << aSO << " = " << this << ".CreateEmptyMesh()";
    }
  }

  return mesh._retn();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::CreateMeshFromUNV
 *
 *  Create mesh and import data from UNV file
 */
//=============================================================================

SMESH::SMESH_Mesh_ptr SMESH_Gen_i::CreateMeshesFromUNV( const char* theFileName )
  throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::CreateMeshesFromUNV" );

  SMESH::SMESH_Mesh_var aMesh = createMesh();
  string aFileName;
  // publish mesh in the study
  if ( CanPublishInStudy( aMesh ) ) {
    SALOMEDS::StudyBuilder_var aStudyBuilder = myCurrentStudy->NewBuilder();
    aStudyBuilder->NewCommand();  // There is a transaction
    SALOMEDS::SObject_var aSO = PublishMesh( myCurrentStudy, aMesh.in(), aFileName.c_str() );
    aStudyBuilder->CommitCommand();
    if ( !aSO->_is_nil() ) {
      // Update Python script
      TPythonDump() << aSO << " = smeshgen.CreateMeshesFromUNV(r'" << theFileName << "')";
    }
  }

  SMESH_Mesh_i* aServant = dynamic_cast<SMESH_Mesh_i*>( GetServant( aMesh ).in() );
  ASSERT( aServant );
  aServant->ImportUNVFile( theFileName );

  // Dump creation of groups
  SMESH::ListOfGroups_var groups = aServant->GetGroups();

  aServant->GetImpl().GetMeshDS()->Modified();
  return aMesh._retn();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::CreateMeshFromMED
 *
 *  Create mesh and import data from MED file
 */
//=============================================================================

SMESH::mesh_array* SMESH_Gen_i::CreateMeshesFromMEDorSAUV( const char* theFileName,
                                                           SMESH::DriverMED_ReadStatus& theStatus,
                                                           const char* theCommandNameForPython,
                                                           const char* theFileNameForPython)
{
  // Retrieve mesh names from the file
  DriverMED_R_SMESHDS_Mesh myReader;
  myReader.SetFile( theFileName );
  myReader.SetMeshId( -1 );
  Driver_Mesh::Status aStatus;
  list<string> aNames = myReader.GetMeshNames(aStatus);
  SMESH::mesh_array_var aResult = new SMESH::mesh_array();
  theStatus = (SMESH::DriverMED_ReadStatus)aStatus;

  { // open a new scope to make aPythonDump die before PythonDump in SMESH_Mesh::GetGroups()

  // Python Dump
  TPythonDump aPythonDump;
  aPythonDump << "([";

  if (theStatus == SMESH::DRS_OK) {
    SALOMEDS::StudyBuilder_var aStudyBuilder = myCurrentStudy->NewBuilder();
    aStudyBuilder->NewCommand();  // There is a transaction
    aResult->length( aNames.size() );
    int i = 0;

    // Iterate through all meshes and create mesh objects
    for ( list<string>::iterator it = aNames.begin(); it != aNames.end(); it++ ) {
      // Python Dump
      if (i > 0) aPythonDump << ", ";

      // create mesh
      SMESH::SMESH_Mesh_var mesh = createMesh();

      // publish mesh in the study
      SALOMEDS::SObject_var aSO;
      if ( CanPublishInStudy( mesh ) )
        aSO = PublishMesh( myCurrentStudy, mesh.in(), (*it).c_str() );
      if ( !aSO->_is_nil() ) {
        // Python Dump
        aPythonDump << aSO;
      } else {
        // Python Dump
        aPythonDump << "mesh_" << i;
      }

      // Read mesh data (groups are published automatically by ImportMEDFile())
      SMESH_Mesh_i* meshServant = dynamic_cast<SMESH_Mesh_i*>( GetServant( mesh ).in() );
      ASSERT( meshServant );
      SMESH::DriverMED_ReadStatus status1 =
        meshServant->ImportMEDFile( theFileName, (*it).c_str() );
      if (status1 > theStatus)
        theStatus = status1;

      aResult[i++] = SMESH::SMESH_Mesh::_duplicate( mesh );
      meshServant->GetImpl().GetMeshDS()->Modified();
    }
    aStudyBuilder->CommitCommand();
  }

  // Update Python script
  aPythonDump << "], status) = " << this << "." << theCommandNameForPython << "(r'" << theFileNameForPython << "')";
  }
  // Dump creation of groups
  for ( int i = 0; i < aResult->length(); ++i )
    SMESH::ListOfGroups_var groups = aResult[ i ]->GetGroups();

  return aResult._retn();
}

SMESH::mesh_array* SMESH_Gen_i::CreateMeshesFromMED( const char* theFileName,
                                                     SMESH::DriverMED_ReadStatus& theStatus)
     throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::CreateMeshFromMED" );
  SMESH::mesh_array* result = CreateMeshesFromMEDorSAUV(theFileName, theStatus, "CreateMeshesFromMED", theFileName);
  return result;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::CreateMeshFromSAUV
 *
 *  Create mesh and import data from SAUV file
 */
//=============================================================================

SMESH::mesh_array* SMESH_Gen_i::CreateMeshesFromSAUV( const char* theFileName,
                                                      SMESH::DriverMED_ReadStatus& theStatus)
     throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::CreateMeshFromSAUV" );
  std::string sauvfilename(theFileName);
  std::string medfilename(theFileName);
  medfilename += ".med";
  std::string cmd;
#ifdef WNT
  cmd = "%PYTHONBIN% ";
#else
  cmd = "python ";
#endif
  cmd += "-c \"";
  cmd += "from medutilities import convert ; convert(r'" + sauvfilename + "', 'GIBI', 'MED', 1, r'" + medfilename + "')";
  cmd += "\"";
  system(cmd.c_str());
  SMESH::mesh_array* result = CreateMeshesFromMEDorSAUV(medfilename.c_str(), theStatus, "CreateMeshesFromSAUV", sauvfilename.c_str());
#ifdef WNT
  cmd = "%PYTHONBIN% ";
#else
  cmd = "python ";
#endif
  cmd += "-c \"";
  cmd += "from medutilities import my_remove ; my_remove(r'" + medfilename + "')";
  cmd += "\"";
  system(cmd.c_str());
  return result;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::CreateMeshFromSTL
 *
 *  Create mesh and import data from STL file
 */
//=============================================================================

SMESH::SMESH_Mesh_ptr SMESH_Gen_i::CreateMeshesFromSTL( const char* theFileName )
  throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::CreateMeshesFromSTL" );

  SMESH::SMESH_Mesh_var aMesh = createMesh();
  string aFileName;
  // publish mesh in the study
  if ( CanPublishInStudy( aMesh ) ) {
    SALOMEDS::StudyBuilder_var aStudyBuilder = myCurrentStudy->NewBuilder();
    aStudyBuilder->NewCommand();  // There is a transaction
    SALOMEDS::SObject_var aSO = PublishInStudy
      ( myCurrentStudy, SALOMEDS::SObject::_nil(), aMesh.in(), aFileName.c_str() );
    aStudyBuilder->CommitCommand();
    if ( !aSO->_is_nil() ) {
      // Update Python script
      TPythonDump() << aSO << " = " << this << ".CreateMeshesFromSTL(r'" << theFileName << "')";
    }
  }

  SMESH_Mesh_i* aServant = dynamic_cast<SMESH_Mesh_i*>( GetServant( aMesh ).in() );
  ASSERT( aServant );
  aServant->ImportSTLFile( theFileName );
  aServant->GetImpl().GetMeshDS()->Modified();
  return aMesh._retn();
}

//================================================================================
/*!
 * \brief Create meshes and import data from the CGSN file
 */
//================================================================================

SMESH::mesh_array* SMESH_Gen_i::CreateMeshesFromCGNS( const char* theFileName,
                                                      SMESH::DriverMED_ReadStatus& theStatus)
  throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);

  SMESH::mesh_array_var aResult = new SMESH::mesh_array();

#ifdef WITH_CGNS
  // Retrieve nb meshes from the file
  DriverCGNS_Read myReader;
  myReader.SetFile( theFileName );
  Driver_Mesh::Status aStatus;
  int nbMeshes = myReader.GetNbMeshes(aStatus);
  theStatus = (SMESH::DriverMED_ReadStatus)aStatus;

  aResult->length( nbMeshes );

  { // open a new scope to make aPythonDump die before PythonDump in SMESH_Mesh::GetGroups()

    // Python Dump
    TPythonDump aPythonDump;
    aPythonDump << "([";

    if (theStatus == SMESH::DRS_OK)
    {
      SALOMEDS::StudyBuilder_var aStudyBuilder = myCurrentStudy->NewBuilder();
      aStudyBuilder->NewCommand();  // There is a transaction

      int i = 0;

      // Iterate through all meshes and create mesh objects
      for ( ; i < nbMeshes; ++i )
      {
        // Python Dump
        if (i > 0) aPythonDump << ", ";

        // create mesh
        SMESH::SMESH_Mesh_var mesh = createMesh();
        aResult[i] = SMESH::SMESH_Mesh::_duplicate( mesh );

        // Read mesh data (groups are published automatically by ImportMEDFile())
        SMESH_Mesh_i* meshServant = dynamic_cast<SMESH_Mesh_i*>( GetServant( mesh ).in() );
        ASSERT( meshServant );
        string meshName;
        SMESH::DriverMED_ReadStatus status1 =
          meshServant->ImportCGNSFile( theFileName, i, meshName );
        if (status1 > theStatus)
          theStatus = status1;

        meshServant->GetImpl().GetMeshDS()->Modified();
        // publish mesh in the study
        SALOMEDS::SObject_var aSO;
        if ( CanPublishInStudy( mesh ) )
          aSO = PublishMesh( myCurrentStudy, mesh.in(), meshName.c_str() );

        // Python Dump
        if ( !aSO->_is_nil() )
          aPythonDump << aSO;
        else
          aPythonDump << "mesh_" << i;
      }
      aStudyBuilder->CommitCommand();
    }

    aPythonDump << "], status) = " << this << ".CreateMeshesFromCGNS(r'" << theFileName << "')";
  }
  // Dump creation of groups
  for ( int i = 0; i < aResult->length(); ++i )
    SMESH::ListOfGroups_var groups = aResult[ i ]->GetGroups();
#else
  THROW_SALOME_CORBA_EXCEPTION("CGNS library is unavailable", SALOME::INTERNAL_ERROR);
#endif

  return aResult._retn();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::IsReadyToCompute
 *
 *  Returns true if mesh contains enough data to be computed
 */
//=============================================================================

CORBA::Boolean SMESH_Gen_i::IsReadyToCompute( SMESH::SMESH_Mesh_ptr theMesh,
                                              GEOM::GEOM_Object_ptr theShapeObject )
  throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::IsReadyToCompute" );

  if ( CORBA::is_nil( theShapeObject ) )
    THROW_SALOME_CORBA_EXCEPTION( "bad shape object reference",
                                  SALOME::BAD_PARAM );

  if ( CORBA::is_nil( theMesh ) )
    THROW_SALOME_CORBA_EXCEPTION( "bad Mesh reference",
                                  SALOME::BAD_PARAM );

  try {
    // get mesh servant
    SMESH_Mesh_i* meshServant = dynamic_cast<SMESH_Mesh_i*>( GetServant( theMesh ).in() );
    ASSERT( meshServant );
    if ( meshServant ) {
      // get local TopoDS_Shape
      TopoDS_Shape myLocShape = GeomObjectToShape( theShapeObject );
      // call implementation
      ::SMESH_Mesh& myLocMesh = meshServant->GetImpl();
      return myGen.CheckAlgoState( myLocMesh, myLocShape );
    }
  }
  catch ( SALOME_Exception& S_ex ) {
    INFOS( "catch exception "<< S_ex.what() );
  }
  return false;
}

//================================================================================
/*!
 * \brief  Find SObject for an algo
 */
//================================================================================

SALOMEDS::SObject_ptr SMESH_Gen_i::GetAlgoSO(const ::SMESH_Algo* algo)
{
  if ( algo ) {
    if ( !myCurrentStudy->_is_nil() ) {
      // find algo in the study
      SALOMEDS::SComponent_var father = SALOMEDS::SComponent::_narrow
        ( myCurrentStudy->FindComponent( ComponentDataType() ) );
      if ( !father->_is_nil() ) {
        SALOMEDS::ChildIterator_var itBig = myCurrentStudy->NewChildIterator( father );
        for ( ; itBig->More(); itBig->Next() ) {
          SALOMEDS::SObject_var gotBranch = itBig->Value();
          if ( gotBranch->Tag() == GetAlgorithmsRootTag() ) {
            SALOMEDS::ChildIterator_var algoIt = myCurrentStudy->NewChildIterator( gotBranch );
            for ( ; algoIt->More(); algoIt->Next() ) {
              SALOMEDS::SObject_var algoSO = algoIt->Value();
              CORBA::Object_var     algoIOR = SObjectToObject( algoSO );
              if ( !CORBA::is_nil( algoIOR )) {
                SMESH_Hypothesis_i* impl = SMESH::DownCast<SMESH_Hypothesis_i*>( algoIOR );
                if ( impl && impl->GetImpl() == algo )
                  return algoSO._retn();
              }
            } // loop on algo SO's
            break;
          } // if algo tag
        } // SMESH component iterator
      }
    }
  }
  return SALOMEDS::SObject::_nil();
}

//================================================================================
/*!
 * \brief Return errors of mesh computation
 */
//================================================================================

SMESH::compute_error_array* SMESH_Gen_i::GetComputeErrors( SMESH::SMESH_Mesh_ptr theMesh,
                                                           GEOM::GEOM_Object_ptr theSubObject )
  throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::GetComputeErrors()" );

  if ( CORBA::is_nil( theSubObject ) && theMesh->HasShapeToMesh())
    THROW_SALOME_CORBA_EXCEPTION( "bad shape object reference", SALOME::BAD_PARAM );

  if ( CORBA::is_nil( theMesh ) )
    THROW_SALOME_CORBA_EXCEPTION( "bad Mesh reference",SALOME::BAD_PARAM );

  SMESH::compute_error_array_var error_array = new SMESH::compute_error_array;
  try {
    if ( SMESH_Mesh_i* meshServant = SMESH::DownCast<SMESH_Mesh_i*>( theMesh ))
    {
      TopoDS_Shape shape;
      if(theMesh->HasShapeToMesh())
        shape = GeomObjectToShape( theSubObject );
      else
        shape = SMESH_Mesh::PseudoShape();

      ::SMESH_Mesh& mesh = meshServant->GetImpl();

      error_array->length( mesh.GetMeshDS()->MaxShapeIndex() );
      int nbErr = 0;

      SMESH_subMesh *sm = mesh.GetSubMesh(shape);
      const bool includeSelf = true, complexShapeFirst = true;
      SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(includeSelf,
                                                               complexShapeFirst);
      while ( smIt->more() )
      {
        sm = smIt->next();
        if ( sm->GetSubShape().ShapeType() == TopAbs_VERTEX )
          break;
        SMESH_ComputeErrorPtr error = sm->GetComputeError();
        if ( error && !error->IsOK() && error->myAlgo )
        {
          SMESH::ComputeError & errStruct = error_array[ nbErr++ ];
          errStruct.code       = -( error->myName < 0 ? error->myName + 1: error->myName ); // -1 -> 0
          errStruct.comment    = error->myComment.c_str();
          errStruct.subShapeID = sm->GetId();
          SALOMEDS::SObject_var algoSO = GetAlgoSO( error->myAlgo );
          if ( !algoSO->_is_nil() )
            errStruct.algoName = algoSO->GetName();
          else
            errStruct.algoName = error->myAlgo->GetName();
          errStruct.hasBadMesh = !error->myBadElements.empty();
        }
      }
      error_array->length( nbErr );
    }
  }
  catch ( SALOME_Exception& S_ex ) {
    INFOS( "catch exception "<< S_ex.what() );
  }

  return error_array._retn();
}

//
//================================================================================
/*!
 * \brief Return mesh elements preventing computation of a subshape
 */
//================================================================================

SMESH::MeshPreviewStruct*
SMESH_Gen_i::GetBadInputElements( SMESH::SMESH_Mesh_ptr theMesh,
                                  CORBA::Short          theSubShapeID )
  throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::GetBadInputElements()" );

  if ( CORBA::is_nil( theMesh ) )
    THROW_SALOME_CORBA_EXCEPTION( "bad Mesh reference",SALOME::BAD_PARAM );

  SMESH::MeshPreviewStruct_var result = new SMESH::MeshPreviewStruct;
  try {
    // mesh servant
    if ( SMESH_Mesh_i* meshServant = SMESH::DownCast<SMESH_Mesh_i*>( theMesh ))
    {
      // mesh implementation
      ::SMESH_Mesh& mesh = meshServant->GetImpl();
      // submesh by subshape id
      if ( SMESH_subMesh * sm = mesh.GetSubMeshContaining( theSubShapeID ))
      {
        // compute error
        SMESH_ComputeErrorPtr error = sm->GetComputeError();
        if ( error && !error->myBadElements.empty())
        {
          typedef map<const SMDS_MeshElement*, int > TNode2LocalIDMap;
          typedef TNode2LocalIDMap::iterator         TNodeLocalID;

          // get nodes of elements and count elements
          TNode2LocalIDMap mapNode2LocalID;
          list< TNodeLocalID > connectivity;
          int i, nbElements = 0, nbConnNodes = 0;

          list<const SMDS_MeshElement*>::iterator elemIt  = error->myBadElements.begin();
          list<const SMDS_MeshElement*>::iterator elemEnd = error->myBadElements.end();
          for ( ; elemIt != elemEnd; ++elemIt, ++nbElements )
          {
            SMDS_ElemIteratorPtr nIt = (*elemIt)->nodesIterator();
            while ( nIt->more() )
              connectivity.push_back
                ( mapNode2LocalID.insert( make_pair( nIt->next(), ++nbConnNodes)).first );
          }
          // fill node coords and assign local ids to the nodes
          int nbNodes = mapNode2LocalID.size();
          result->nodesXYZ.length( nbNodes );
          TNodeLocalID node2ID = mapNode2LocalID.begin();
          for ( i = 0; i < nbNodes; ++i, ++node2ID ) {
            node2ID->second = i;
            const SMDS_MeshNode* node = (const SMDS_MeshNode*) node2ID->first;
            result->nodesXYZ[i].x = node->X();
            result->nodesXYZ[i].y = node->Y();
            result->nodesXYZ[i].z = node->Z();
          }
          // fill connectivity
          result->elementConnectivities.length( nbConnNodes );
          list< TNodeLocalID >::iterator connIt = connectivity.begin();
          for ( i = 0; i < nbConnNodes; ++i, ++connIt ) {
            result->elementConnectivities[i] = (*connIt)->second;
          }
          // fill element types
          result->elementTypes.length( nbElements );
          for ( i = 0, elemIt = error->myBadElements.begin(); i <nbElements; ++i, ++elemIt )
          {
            const SMDS_MeshElement* elem = *elemIt;
            result->elementTypes[i].SMDS_ElementType = (SMESH::ElementType) elem->GetType();
            result->elementTypes[i].isPoly           = elem->IsPoly();
            result->elementTypes[i].nbNodesInElement = elem->NbNodes();
          }
        }
      }
    }
  }
  catch ( SALOME_Exception& S_ex ) {
    INFOS( "catch exception "<< S_ex.what() );
  }

  return result._retn();
}

//================================================================================
/*!
 * \brief Returns errors of hypotheses definintion
 * \param theMesh - the mesh
 * \param theSubObject - the main or sub- shape
 * \retval SMESH::algo_error_array* - sequence of errors
 */
//================================================================================

SMESH::algo_error_array* SMESH_Gen_i::GetAlgoState( SMESH::SMESH_Mesh_ptr theMesh,
                                                    GEOM::GEOM_Object_ptr theSubObject )
      throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::GetAlgoState()" );

  if ( CORBA::is_nil( theSubObject ) && theMesh->HasShapeToMesh())
    THROW_SALOME_CORBA_EXCEPTION( "bad shape object reference", SALOME::BAD_PARAM );

  if ( CORBA::is_nil( theMesh ) )
    THROW_SALOME_CORBA_EXCEPTION( "bad Mesh reference",SALOME::BAD_PARAM );

  SMESH::algo_error_array_var error_array = new SMESH::algo_error_array;
  try {
    SMESH_Mesh_i* meshServant = SMESH::DownCast<SMESH_Mesh_i*>( theMesh );
    ASSERT( meshServant );
    if ( meshServant ) {
      TopoDS_Shape myLocShape;
      if(theMesh->HasShapeToMesh())
        myLocShape = GeomObjectToShape( theSubObject );
      else
        myLocShape = SMESH_Mesh::PseudoShape();

      ::SMESH_Mesh& myLocMesh = meshServant->GetImpl();
      list< ::SMESH_Gen::TAlgoStateError > error_list;
      list< ::SMESH_Gen::TAlgoStateError >::iterator error;
      // call ::SMESH_Gen::GetAlgoState()
      myGen.GetAlgoState( myLocMesh, myLocShape, error_list );
      error_array->length( error_list.size() );
      int i = 0;
      for ( error = error_list.begin(); error != error_list.end(); ++error )
      {
        // fill AlgoStateError structure
        SMESH::AlgoStateError & errStruct = error_array[ i++ ];
        errStruct.state        = SMESH_Mesh_i::ConvertHypothesisStatus( error->_name );
        errStruct.algoDim      = error->_algoDim;
        errStruct.isGlobalAlgo = error->_isGlobalAlgo;
        errStruct.algoName     = "";
        SALOMEDS::SObject_var algoSO = GetAlgoSO( error->_algo );
        if ( !algoSO->_is_nil() )
          errStruct.algoName   = algoSO->GetName();
      }
    }
  }
  catch ( SALOME_Exception& S_ex ) {
    INFOS( "catch exception "<< S_ex.what() );
  }
  return error_array._retn();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::GetSubShapesId
 *
 *  Get sub-shapes unique ID's list
 */
//=============================================================================

SMESH::long_array* SMESH_Gen_i::GetSubShapesId( GEOM::GEOM_Object_ptr theMainShapeObject,
                                            const SMESH::object_array& theListOfSubShapeObject )
     throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::GetSubShapesId" );

  SMESH::long_array_var shapesId = new SMESH::long_array;
  set<int> setId;

  if ( CORBA::is_nil( theMainShapeObject ) )
    THROW_SALOME_CORBA_EXCEPTION( "bad shape object reference",
                                  SALOME::BAD_PARAM );

  try
    {
      TopoDS_Shape myMainShape = GeomObjectToShape(theMainShapeObject);
      TopTools_IndexedMapOfShape myIndexToShape;
      TopExp::MapShapes(myMainShape,myIndexToShape);

      for ( int i = 0; i < theListOfSubShapeObject.length(); i++ )
        {
          GEOM::GEOM_Object_var aShapeObject
            = GEOM::GEOM_Object::_narrow(theListOfSubShapeObject[i]);
          if ( CORBA::is_nil( aShapeObject ) )
            THROW_SALOME_CORBA_EXCEPTION ("bad shape object reference", \
                                        SALOME::BAD_PARAM );

          TopoDS_Shape locShape  = GeomObjectToShape(aShapeObject);
          for (TopExp_Explorer exp(locShape,TopAbs_FACE); exp.More(); exp.Next())
            {
              const TopoDS_Face& F = TopoDS::Face(exp.Current());
              setId.insert(myIndexToShape.FindIndex(F));
              if(MYDEBUG) SCRUTE(myIndexToShape.FindIndex(F));
            }
          for (TopExp_Explorer exp(locShape,TopAbs_EDGE); exp.More(); exp.Next())
            {
              const TopoDS_Edge& E = TopoDS::Edge(exp.Current());
              setId.insert(myIndexToShape.FindIndex(E));
              if(MYDEBUG) SCRUTE(myIndexToShape.FindIndex(E));
            }
          for (TopExp_Explorer exp(locShape,TopAbs_VERTEX); exp.More(); exp.Next())
            {
              const TopoDS_Vertex& V = TopoDS::Vertex(exp.Current());
              setId.insert(myIndexToShape.FindIndex(V));
              if(MYDEBUG) SCRUTE(myIndexToShape.FindIndex(V));
            }
        }
      shapesId->length(setId.size());
      set<int>::iterator iind;
      int i=0;
      for (iind = setId.begin(); iind != setId.end(); iind++)
        {
          if(MYDEBUG) SCRUTE((*iind));
          shapesId[i] = (*iind);
          if(MYDEBUG) SCRUTE(shapesId[i]);
          i++;
        }
    }
  catch (SALOME_Exception& S_ex)
    {
      THROW_SALOME_CORBA_EXCEPTION(S_ex.what(), SALOME::BAD_PARAM);
    }

  return shapesId._retn();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::Compute
 *
 *  Compute mesh on a shape
 */
//=============================================================================

CORBA::Boolean SMESH_Gen_i::Compute( SMESH::SMESH_Mesh_ptr theMesh,
                                     GEOM::GEOM_Object_ptr theShapeObject )
     throw ( SALOME::SALOME_Exception )
{
  MEMOSTAT;
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::Compute" );

  if ( CORBA::is_nil( theShapeObject ) && theMesh->HasShapeToMesh())
    THROW_SALOME_CORBA_EXCEPTION( "bad shape object reference",
                                  SALOME::BAD_PARAM );

  if ( CORBA::is_nil( theMesh ) )
    THROW_SALOME_CORBA_EXCEPTION( "bad Mesh reference",
                                  SALOME::BAD_PARAM );

  // Update Python script
  TPythonDump() << "isDone = " << this << ".Compute( "
                << theMesh << ", " << theShapeObject << ")";

  try {
    // get mesh servant
    SMESH_Mesh_i* meshServant = dynamic_cast<SMESH_Mesh_i*>( GetServant( theMesh ).in() );
    meshServant->Load();
    ASSERT( meshServant );
    if ( meshServant ) {
      // NPAL16168: "geometrical group edition from a submesh don't modifiy mesh computation"
      meshServant->CheckGeomGroupModif();
      // get local TopoDS_Shape
      TopoDS_Shape myLocShape;
      if(theMesh->HasShapeToMesh())
        myLocShape = GeomObjectToShape( theShapeObject );
      else
        myLocShape = SMESH_Mesh::PseudoShape();
      // call implementation compute
      ::SMESH_Mesh& myLocMesh = meshServant->GetImpl();
#ifdef WITH_SMESH_CANCEL_COMPUTE
      myGen.PrepareCompute( myLocMesh, myLocShape);
#endif
      bool ok = myGen.Compute( myLocMesh, myLocShape);
      meshServant->CreateGroupServants(); // algos can create groups (issue 0020918)
      myLocMesh.GetMeshDS()->Modified();
      return ok;
    }
  }
  catch ( std::bad_alloc ) {
    INFOS( "Compute(): lack of memory" );
  }
  catch ( SALOME_Exception& S_ex ) {
    INFOS( "Compute(): catch exception "<< S_ex.what() );
  }
  catch ( ... ) {
    INFOS( "Compute(): unknown exception " );
  }
  return false;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::CancelCompute
 *
 *  Cancel Compute mesh on a shape
 */
//=============================================================================

void SMESH_Gen_i::CancelCompute( SMESH::SMESH_Mesh_ptr theMesh,
                                 GEOM::GEOM_Object_ptr theShapeObject )
{
#ifdef WITH_SMESH_CANCEL_COMPUTE
  SMESH_Mesh_i* meshServant = dynamic_cast<SMESH_Mesh_i*>( GetServant( theMesh ).in() );
  ::SMESH_Mesh& myLocMesh = meshServant->GetImpl();
  TopoDS_Shape myLocShape;
  if(theMesh->HasShapeToMesh())
    myLocShape = GeomObjectToShape( theShapeObject );
  else
    myLocShape = SMESH_Mesh::PseudoShape();
  myGen.CancelCompute( myLocMesh, myLocShape);
#endif
}

//=============================================================================
/*!
 *  SMESH_Gen_i::Precompute
 *
 *  Compute mesh as preview till indicated dimension on shape
 */
//=============================================================================

SMESH::MeshPreviewStruct* SMESH_Gen_i::Precompute( SMESH::SMESH_Mesh_ptr theMesh,
                                                   GEOM::GEOM_Object_ptr theShapeObject,
                                                   SMESH::Dimension      theDimension,
                                                   SMESH::long_array&    theShapesId)
     throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::Precompute" );

  if ( CORBA::is_nil( theShapeObject ) && theMesh->HasShapeToMesh())
    THROW_SALOME_CORBA_EXCEPTION( "bad shape object reference",
                                  SALOME::BAD_PARAM );

  if ( CORBA::is_nil( theMesh ) )
    THROW_SALOME_CORBA_EXCEPTION( "bad Mesh reference",
                                  SALOME::BAD_PARAM );

  SMESH::MeshPreviewStruct_var result = new SMESH::MeshPreviewStruct;
  try {
    // get mesh servant
    SMESH_Mesh_i* meshServant = dynamic_cast<SMESH_Mesh_i*>( GetServant( theMesh ).in() );
    meshServant->Load();
    ASSERT( meshServant );
    if ( meshServant ) {
      // NPAL16168: "geometrical group edition from a submesh don't modifiy mesh computation"
      meshServant->CheckGeomGroupModif();
      // get local TopoDS_Shape
      TopoDS_Shape myLocShape;
      if(theMesh->HasShapeToMesh())
        myLocShape = GeomObjectToShape( theShapeObject );
      else
        return result._retn();;

      // call implementation compute
      ::SMESH_Mesh& myLocMesh = meshServant->GetImpl();
      TSetOfInt shapeIds;
      ::MeshDimension aDim = (MeshDimension)theDimension;
      if ( myGen.Compute( myLocMesh, myLocShape, false, aDim, &shapeIds ) )
      {
        int nbShapeId = shapeIds.size();
        theShapesId.length( nbShapeId );
        // iterates on shapes and collect mesh entities into mesh preview
        TSetOfInt::const_iterator idIt = shapeIds.begin();
        TSetOfInt::const_iterator idEnd = shapeIds.end();
        std::map< int, int > mapOfShIdNb;
        std::set< SMESH_TLink > setOfEdge;
        std::list< SMDSAbs_ElementType > listOfElemType;
        typedef map<const SMDS_MeshElement*, int > TNode2LocalIDMap;
        typedef TNode2LocalIDMap::iterator         TNodeLocalID;
        TNode2LocalIDMap mapNode2LocalID;
        list< TNodeLocalID > connectivity;
        int i, nbConnNodes = 0;
        std::set< const SMESH_subMesh* > setOfVSubMesh;
        // iterates on shapes
        for ( ; idIt != idEnd; idIt++ )
        {
          if ( mapOfShIdNb.find( *idIt ) != mapOfShIdNb.end() )
            continue;
          SMESH_subMesh* sm = myLocMesh.GetSubMeshContaining(*idIt);
          if ( !sm || !sm->IsMeshComputed() )
            continue;

          const TopoDS_Shape& aSh = sm->GetSubShape();
          const int shDim = myGen.GetShapeDim( aSh );
          if ( shDim < 1 || shDim > theDimension )
            continue;

          mapOfShIdNb[ *idIt ] = 0;
          theShapesId[ mapOfShIdNb.size() - 1 ] = *idIt;

          SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
          if ( !smDS ) continue;

          if ( theDimension == SMESH::DIM_2D )
          {
            SMDS_ElemIteratorPtr faceIt = smDS->GetElements();
            while ( faceIt->more() )
            {
              const SMDS_MeshElement* face = faceIt->next();
              int aNbNode = face->NbNodes();
              if ( aNbNode > 4 )
                aNbNode /= 2; // do not take into account additional middle nodes

              SMDS_MeshNode* node1 = (SMDS_MeshNode*)face->GetNode( 0 );
              for ( int nIndx = 0; nIndx < aNbNode; nIndx++ )
              {
                SMDS_MeshNode* node2 = (SMDS_MeshNode*)face->GetNode( nIndx+1 < aNbNode ? nIndx+1 : 0 );
                if ( setOfEdge.insert( SMESH_TLink ( node1, node2 ) ).second )
                {
                  listOfElemType.push_back( SMDSAbs_Edge );
                  connectivity.push_back
                    ( mapNode2LocalID.insert( make_pair( node1, ++nbConnNodes)).first );
                  connectivity.push_back
                    ( mapNode2LocalID.insert( make_pair( node2, ++nbConnNodes)).first );
                }
                node1 = node2;
              }
            }
          }
          else if ( theDimension == SMESH::DIM_1D )
          {
            SMDS_NodeIteratorPtr nodeIt = smDS->GetNodes();
            while ( nodeIt->more() )
            {
              listOfElemType.push_back( SMDSAbs_Node );
              connectivity.push_back
                ( mapNode2LocalID.insert( make_pair( nodeIt->next(), ++nbConnNodes)).first );
            }
            // add corner nodes by first vertex from edge
            SMESH_subMeshIteratorPtr edgeSmIt =
              sm->getDependsOnIterator(/*includeSelf*/false,
                                       /*complexShapeFirst*/false);
            while ( edgeSmIt->more() )
            {
              SMESH_subMesh* vertexSM = edgeSmIt->next();
              // check that vertex is not already treated
              if ( !setOfVSubMesh.insert( vertexSM ).second )
                continue;
              if ( vertexSM->GetSubShape().ShapeType() != TopAbs_VERTEX )
                continue;

              const SMESHDS_SubMesh* vertexSmDS = vertexSM->GetSubMeshDS();
              SMDS_NodeIteratorPtr nodeIt = vertexSmDS->GetNodes();
              while ( nodeIt->more() )
              {
                listOfElemType.push_back( SMDSAbs_Node );
                connectivity.push_back
                  ( mapNode2LocalID.insert( make_pair( nodeIt->next(), ++nbConnNodes)).first );
              }
            }
          }
        }

        // fill node coords and assign local ids to the nodes
        int nbNodes = mapNode2LocalID.size();
        result->nodesXYZ.length( nbNodes );
        TNodeLocalID node2ID = mapNode2LocalID.begin();
        for ( i = 0; i < nbNodes; ++i, ++node2ID ) {
          node2ID->second = i;
          const SMDS_MeshNode* node = (const SMDS_MeshNode*) node2ID->first;
          result->nodesXYZ[i].x = node->X();
          result->nodesXYZ[i].y = node->Y();
          result->nodesXYZ[i].z = node->Z();
        }
        // fill connectivity
        result->elementConnectivities.length( nbConnNodes );
        list< TNodeLocalID >::iterator connIt = connectivity.begin();
        for ( i = 0; i < nbConnNodes; ++i, ++connIt ) {
          result->elementConnectivities[i] = (*connIt)->second;
        }

        // fill element types
        result->elementTypes.length( listOfElemType.size() );
        std::list< SMDSAbs_ElementType >::const_iterator typeIt = listOfElemType.begin();
        std::list< SMDSAbs_ElementType >::const_iterator typeEnd = listOfElemType.end();
        for ( i = 0; typeIt != typeEnd; ++i, ++typeIt )
        {
          SMDSAbs_ElementType elemType = *typeIt;
          result->elementTypes[i].SMDS_ElementType = (SMESH::ElementType)elemType;
          result->elementTypes[i].isPoly           = false;
          result->elementTypes[i].nbNodesInElement = elemType == SMDSAbs_Edge ? 2 : 1;
        }

        // correct number of shapes
        theShapesId.length( mapOfShIdNb.size() );
      }
    }
  }
  catch ( std::bad_alloc ) {
    INFOS( "Precompute(): lack of memory" );
  }
  catch ( SALOME_Exception& S_ex ) {
    INFOS( "Precompute(): catch exception "<< S_ex.what() );
  }
  catch ( ... ) {
    INFOS( "Precompute(): unknown exception " );
  }
  return result._retn();
}


//=============================================================================
/*!
 *  SMESH_Gen_i::Evaluate
 *
 *  Evaluate mesh on a shape
 */
//=============================================================================

SMESH::long_array* SMESH_Gen_i::Evaluate(SMESH::SMESH_Mesh_ptr theMesh,
                                         GEOM::GEOM_Object_ptr theShapeObject)
//                                     SMESH::long_array& theNbElems)
     throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::Evaluate" );

  if ( CORBA::is_nil( theShapeObject ) && theMesh->HasShapeToMesh())
    THROW_SALOME_CORBA_EXCEPTION( "bad shape object reference",
                                  SALOME::BAD_PARAM );

  if ( CORBA::is_nil( theMesh ) )
    THROW_SALOME_CORBA_EXCEPTION( "bad Mesh reference",
                                  SALOME::BAD_PARAM );

  SMESH::long_array_var nbels = new SMESH::long_array;
  nbels->length(SMESH::Entity_Last);
  int i = SMESH::Entity_Node;
  for (; i < SMESH::Entity_Last; i++)
    nbels[i] = 0;

  // Update Python script
  TPythonDump() << "theNbElems = " << this << ".Evaluate( "
                << theMesh << ", " << theShapeObject << ")";

  try {
    // get mesh servant
    SMESH_Mesh_i* meshServant = dynamic_cast<SMESH_Mesh_i*>( GetServant( theMesh ).in() );
    ASSERT( meshServant );
    if ( meshServant ) {
      // NPAL16168: "geometrical group edition from a submesh don't modifiy mesh computation"
      meshServant->CheckGeomGroupModif();
      // get local TopoDS_Shape
      TopoDS_Shape myLocShape;
      if(theMesh->HasShapeToMesh())
        myLocShape = GeomObjectToShape( theShapeObject );
      else
        myLocShape = SMESH_Mesh::PseudoShape();
      // call implementation compute
      ::SMESH_Mesh& myLocMesh = meshServant->GetImpl();
      MapShapeNbElems aResMap;
      /*CORBA::Boolean ret =*/ myGen.Evaluate( myLocMesh, myLocShape, aResMap);
      MapShapeNbElemsItr anIt = aResMap.begin();
      for(; anIt!=aResMap.end(); anIt++) {
        const vector<int>& aVec = (*anIt).second;
        for(i = SMESH::Entity_Node; i < aVec.size(); i++) {
          int nbElem = aVec[i];
          if ( nbElem < 0 ) // algo failed, check that it has reported a message
          {
            SMESH_subMesh* sm = anIt->first;
            SMESH_ComputeErrorPtr& error = sm->GetComputeError();
            const SMESH_Algo* algo = myGen.GetAlgo( myLocMesh, sm->GetSubShape());
            if ( (algo && !error.get()) || error->IsOK() )
              error.reset( new SMESH_ComputeError( COMPERR_ALGO_FAILED,"Failed to evaluate",algo));
          }
          else
          {
            nbels[i] += aVec[i];
          }
        }
      }
      return nbels._retn();
    }
  }
  catch ( std::bad_alloc ) {
    INFOS( "Evaluate(): lack of memory" );
  }
  catch ( SALOME_Exception& S_ex ) {
    INFOS( "Evaluate(): catch exception "<< S_ex.what() );
  }
  catch ( ... ) {
    INFOS( "Evaluate(): unknown exception " );
  }

  return nbels._retn();
}

//================================================================================
/*!
 * \brief Return geometrical object the given element is built on
 *  \param theMesh - the mesh the element is in
 *  \param theElementID - the element ID
 *  \param theGeomName - the name of the result geom object if it is not yet published
 *  \retval GEOM::GEOM_Object_ptr - the found or just published geom object
 */
//================================================================================

GEOM::GEOM_Object_ptr
SMESH_Gen_i::GetGeometryByMeshElement( SMESH::SMESH_Mesh_ptr  theMesh,
                                       CORBA::Long            theElementID,
                                       const char*            theGeomName)
  throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);

  GEOM::GEOM_Object_var geom = FindGeometryByMeshElement(theMesh, theElementID);
  if ( !geom->_is_nil() ) {
    GEOM::GEOM_Object_var mainShape = theMesh->GetShapeToMesh();
    GEOM::GEOM_Gen_ptr    geomGen   = GetGeomEngine();

    // try to find the corresponding SObject
    SALOMEDS::SObject_var SObj = ObjectToSObject( myCurrentStudy, geom.in() );
    if ( SObj->_is_nil() ) // submesh can be not found even if published
    {
      // try to find published submesh
      GEOM::ListOfLong_var list = geom->GetSubShapeIndices();
      if ( !geom->IsMainShape() && list->length() == 1 ) {
        SALOMEDS::SObject_var mainSO = ObjectToSObject( myCurrentStudy, mainShape );
        SALOMEDS::ChildIterator_var it;
        if ( !mainSO->_is_nil() )
          it = myCurrentStudy->NewChildIterator( mainSO );
        if ( !it->_is_nil() ) {
          for ( it->InitEx(true); SObj->_is_nil() && it->More(); it->Next() ) {
            GEOM::GEOM_Object_var subGeom =
              GEOM::GEOM_Object::_narrow( SObjectToObject( it->Value() ));
            if ( !subGeom->_is_nil() ) {
              GEOM::ListOfLong_var subList = subGeom->GetSubShapeIndices();
              if ( subList->length() == 1 && list[0] == subList[0] ) {
                SObj = it->Value();
                geom = subGeom;
              }
            }
          }
        }
      }
    }
    if ( SObj->_is_nil() ) // publish a new subshape
      SObj = geomGen->AddInStudy( myCurrentStudy, geom, theGeomName, mainShape );

    // return only published geometry
    if ( !SObj->_is_nil() )
      return geom._retn();
  }
  return GEOM::GEOM_Object::_nil();
}

//================================================================================
/*!
 * \brief Return geometrical object the given element is built on.
 *  \param theMesh - the mesh the element is in
 *  \param theElementID - the element ID
 *  \retval GEOM::GEOM_Object_ptr - the found geom object
 */
//================================================================================

GEOM::GEOM_Object_ptr
SMESH_Gen_i::FindGeometryByMeshElement( SMESH::SMESH_Mesh_ptr  theMesh,
                                        CORBA::Long            theElementID)
  throw ( SALOME::SALOME_Exception )
{
  Unexpect aCatch(SALOME_SalomeException);
  if ( CORBA::is_nil( theMesh ) )
    THROW_SALOME_CORBA_EXCEPTION( "bad Mesh reference", SALOME::BAD_PARAM );

  GEOM::GEOM_Object_var mainShape = theMesh->GetShapeToMesh();
  GEOM::GEOM_Gen_ptr    geomGen   = GetGeomEngine();

  // get a core mesh DS
  SMESH_Mesh_i* meshServant = SMESH::DownCast<SMESH_Mesh_i*>( theMesh );
  if ( meshServant && !geomGen->_is_nil() && !mainShape->_is_nil() )
  {
    ::SMESH_Mesh & mesh = meshServant->GetImpl();
    SMESHDS_Mesh* meshDS = mesh.GetMeshDS();
    // find the element in mesh
    if ( const SMDS_MeshElement * elem = meshDS->FindElement( theElementID ) ) {
      // find a shape id by the element
      if ( int shapeID = ::SMESH_MeshEditor( &mesh ).FindShape( elem )) {
        // get a geom object by the shape id
        GEOM::GEOM_Object_var geom = ShapeToGeomObject( meshDS->IndexToShape( shapeID ));
        if ( geom->_is_nil() ) {
          // try to find a published sub-shape
          SALOMEDS::SObject_var mainSO = ObjectToSObject( myCurrentStudy, mainShape );
          SALOMEDS::ChildIterator_var it;
          if ( !mainSO->_is_nil() )
            it = myCurrentStudy->NewChildIterator( mainSO );
          if ( !it->_is_nil() ) {
            for ( it->InitEx(true); it->More(); it->Next() ) {
              GEOM::GEOM_Object_var subGeom =
                GEOM::GEOM_Object::_narrow( SObjectToObject( it->Value() ));
              if ( !subGeom->_is_nil() ) {
                GEOM::ListOfLong_var subList = subGeom->GetSubShapeIndices();
                if ( subList->length() == 1 && shapeID == subList[0] ) {
                  geom = subGeom;
                  break;
                }
              }
            }
          }
        }
        if ( geom->_is_nil() ) {
          // explode
          GEOM::GEOM_IShapesOperations_var op =
            geomGen->GetIShapesOperations( GetCurrentStudyID() );
          if ( !op->_is_nil() )
            geom = op->GetSubShape( mainShape, shapeID );
        }
        if ( !geom->_is_nil() ) {
          GeomObjectToShape( geom ); // let geom client remember the found shape
          return geom._retn();
        }
      }
    }
  }
  return GEOM::GEOM_Object::_nil();
}

//================================================================================
/*!
 *  SMESH_Gen_i::Concatenate
 *
 *  Concatenate the given meshes into one mesh
 */
//================================================================================

SMESH::SMESH_Mesh_ptr SMESH_Gen_i::Concatenate(const SMESH::mesh_array& theMeshesArray,
                                               CORBA::Boolean           theUniteIdenticalGroups,
                                               CORBA::Boolean           theMergeNodesAndElements,
                                               CORBA::Double            theMergeTolerance)
  throw ( SALOME::SALOME_Exception )
{
  return ConcatenateCommon(theMeshesArray,
                           theUniteIdenticalGroups,
                           theMergeNodesAndElements,
                           theMergeTolerance,
                           false);
}

//================================================================================
/*!
 *  SMESH_Gen_i::ConcatenateWithGroups
 *
 *  Concatenate the given meshes into one mesh
 *  Create the groups of all elements from initial meshes
 */
//================================================================================

SMESH::SMESH_Mesh_ptr
SMESH_Gen_i::ConcatenateWithGroups(const SMESH::mesh_array& theMeshesArray,
                                   CORBA::Boolean           theUniteIdenticalGroups,
                                   CORBA::Boolean           theMergeNodesAndElements,
                                   CORBA::Double            theMergeTolerance)
  throw ( SALOME::SALOME_Exception )
{
  return ConcatenateCommon(theMeshesArray,
                           theUniteIdenticalGroups,
                           theMergeNodesAndElements,
                           theMergeTolerance,
                           true);
}

//================================================================================
/*!
 *  SMESH_Gen_i::ConcatenateCommon
 *
 *  Concatenate the given meshes into one mesh
 */
//================================================================================

SMESH::SMESH_Mesh_ptr
SMESH_Gen_i::ConcatenateCommon(const SMESH::mesh_array& theMeshesArray,
                               CORBA::Boolean           theUniteIdenticalGroups,
                               CORBA::Boolean           theMergeNodesAndElements,
                               CORBA::Double            theMergeTolerance,
                               CORBA::Boolean           theCommonGroups)
  throw ( SALOME::SALOME_Exception )
{
  typedef map<int, int> TIDsMap;
  typedef list<SMESH::SMESH_Group_var> TListOfNewGroups;
  typedef map< pair<string, SMESH::ElementType>, TListOfNewGroups > TGroupsMap;
  typedef std::set<SMESHDS_GroupBase*> TGroups;

  TPythonDump* pPythonDump = new TPythonDump;
  TPythonDump& aPythonDump = *pPythonDump; // prevent dump of called methods

  // create mesh
  SMESH::SMESH_Mesh_var aNewMesh = CreateEmptyMesh();

  SMESHDS_Mesh* aNewMeshDS = 0;
  if ( !aNewMesh->_is_nil() ) {
    SMESH_Mesh_i* aNewImpl = dynamic_cast<SMESH_Mesh_i*>( GetServant( aNewMesh ).in() );
    if ( aNewImpl ) {
      ::SMESH_Mesh& aLocMesh = aNewImpl->GetImpl();
      aNewMeshDS = aLocMesh.GetMeshDS();

      TGroupsMap aGroupsMap;
      TListOfNewGroups aListOfNewGroups;
      SMESH_MeshEditor aNewEditor = ::SMESH_MeshEditor(&aLocMesh);
      SMESH::ListOfGroups_var aListOfGroups = new SMESH::ListOfGroups();

      // loop on meshes
      for ( int i = 0; i < theMeshesArray.length(); i++) {
        SMESH::SMESH_Mesh_var anInitMesh = theMeshesArray[i];
        if ( !anInitMesh->_is_nil() ) {
          SMESH_Mesh_i* anInitImpl = dynamic_cast<SMESH_Mesh_i*>( GetServant( anInitMesh ).in() );
          if ( anInitImpl ) {
            ::SMESH_Mesh& aInitLocMesh = anInitImpl->GetImpl();
            SMESHDS_Mesh* anInitMeshDS = aInitLocMesh.GetMeshDS();

            TIDsMap nodesMap;
            TIDsMap elemsMap;

            // loop on elements of mesh
            SMDS_ElemIteratorPtr itElems = anInitMeshDS->elementsIterator();
            const SMDS_MeshElement* anElem = 0;
            const SMDS_MeshElement* aNewElem = 0;
            int anElemNbNodes = 0;

            int anNbNodes   = 0;
            int anNbEdges   = 0;
            int anNbFaces   = 0;
            int anNbVolumes = 0;
            int aNbBalls    = 0;

            SMESH::long_array_var anIDsNodes   = new SMESH::long_array();
            SMESH::long_array_var anIDsEdges   = new SMESH::long_array();
            SMESH::long_array_var anIDsFaces   = new SMESH::long_array();
            SMESH::long_array_var anIDsVolumes = new SMESH::long_array();
            SMESH::long_array_var anIDsBalls   = new SMESH::long_array();

            if( theCommonGroups ) {
              anIDsNodes->length(   anInitMeshDS->NbNodes()   );
              anIDsEdges->length(   anInitMeshDS->NbEdges()   );
              anIDsFaces->length(   anInitMeshDS->NbFaces()   );
              anIDsVolumes->length( anInitMeshDS->NbVolumes() );
              anIDsBalls->length(   anInitMeshDS->NbBalls() );
            }

            for ( int j = 0; itElems->more(); j++) {
              anElem = itElems->next();
              SMDSAbs_ElementType anElemType = anElem->GetType();
              anElemNbNodes = anElem->NbNodes();
              std::vector<const SMDS_MeshNode*> aNodesArray (anElemNbNodes);

              // loop on nodes of element
              const SMDS_MeshNode* aNode = 0;
              const SMDS_MeshNode* aNewNode = 0;
              SMDS_ElemIteratorPtr itNodes = anElem->nodesIterator();

              for ( int k = 0; itNodes->more(); k++) {
                aNode = static_cast<const SMDS_MeshNode*>(itNodes->next());
                if ( nodesMap.find(aNode->GetID()) == nodesMap.end() ) {
                  aNewNode = aNewMeshDS->AddNode(aNode->X(), aNode->Y(), aNode->Z());
                  nodesMap.insert( make_pair(aNode->GetID(), aNewNode->GetID()) );
                  if( theCommonGroups )
                    anIDsNodes[anNbNodes++] = aNewNode->GetID();
                }
                else
                  aNewNode = aNewMeshDS->FindNode( nodesMap.find(aNode->GetID())->second );
                aNodesArray[k] = aNewNode;
              }//nodes loop

              // creates a corresponding element on existent nodes in new mesh
              switch ( anElem->GetEntityType() ) {
              case SMDSEntity_Polyhedra:
                if ( const SMDS_VtkVolume* aVolume =
                     dynamic_cast<const SMDS_VtkVolume*> (anElem))
                {
                  aNewElem = aNewMeshDS->AddPolyhedralVolume(aNodesArray,
                                                             aVolume->GetQuantities());
                  elemsMap.insert(make_pair(anElem->GetID(), aNewElem->GetID()));
                  if( theCommonGroups )
                    anIDsVolumes[anNbVolumes++] = aNewElem->GetID();
                }
                break;
              case SMDSEntity_Ball:
                if ( const SMDS_BallElement* aBall =
                     dynamic_cast<const SMDS_BallElement*> (anElem))
                {
                  aNewElem = aNewEditor.AddElement(aNodesArray, SMDSAbs_Ball,
                                                   /*isPoly=*/false, /*id=*/0,
                                                   aBall->GetDiameter() );
                  elemsMap.insert(make_pair(anElem->GetID(), aNewElem->GetID()));
                  if( theCommonGroups )
                    anIDsBalls[aNbBalls++] = aNewElem->GetID();
                }
                break;
              default:
                {
                  aNewElem = aNewEditor.AddElement(aNodesArray,
                                                   anElemType,
                                                   anElem->IsPoly());
                  elemsMap.insert(make_pair(anElem->GetID(), aNewElem->GetID()));
                  if( theCommonGroups ) {
                    if( anElemType == SMDSAbs_Edge )
                      anIDsEdges[anNbEdges++] = aNewElem->GetID();
                    else if( anElemType == SMDSAbs_Face )
                      anIDsFaces[anNbFaces++] = aNewElem->GetID();
                    else if( anElemType == SMDSAbs_Volume )
                      anIDsVolumes[anNbVolumes++] = aNewElem->GetID();
                  }
                }
              }
            }//elems loop

            // copy orphan nodes
            SMDS_NodeIteratorPtr  itNodes = anInitMeshDS->nodesIterator();
            while ( itNodes->more() )
            {
              const SMDS_MeshNode* aNode = itNodes->next();
              if ( aNode->NbInverseElements() == 0 )
              {
                const SMDS_MeshNode* aNewNode =
                  aNewMeshDS->AddNode(aNode->X(), aNode->Y(), aNode->Z());
                nodesMap.insert( make_pair(aNode->GetID(), aNewNode->GetID()) );
                if( theCommonGroups )
                  anIDsNodes[anNbNodes++] = aNewNode->GetID();
              }
            }


            aListOfGroups = anInitImpl->GetGroups();
            SMESH::SMESH_GroupBase_ptr aGroup;

            // loop on groups of mesh
            SMESH::long_array_var anInitIDs = new SMESH::long_array();
            SMESH::long_array_var anNewIDs = new SMESH::long_array();
            SMESH::SMESH_Group_var aNewGroup;

            SMESH::ElementType aGroupType;
            CORBA::String_var aGroupName;
            if ( theCommonGroups ) {
              for(aGroupType=SMESH::NODE;aGroupType<=SMESH::BALL;aGroupType=(SMESH::ElementType)(aGroupType+1)) {
                string str = "Gr";
                SALOMEDS::SObject_var aMeshSObj = ObjectToSObject( myCurrentStudy, anInitMesh );
                if(aMeshSObj)
                  str += aMeshSObj->GetName();
                str += "_";

                int anLen = 0;

                switch(aGroupType) {
                case SMESH::NODE:
                  str += "Nodes";
                  anIDsNodes->length(anNbNodes);
                  anLen = anNbNodes;
                  break;
                case SMESH::EDGE:
                  str += "Edges";
                  anIDsEdges->length(anNbEdges);
                  anLen = anNbEdges;
                  break;
                case SMESH::FACE:
                  str += "Faces";
                  anIDsFaces->length(anNbFaces);
                  anLen = anNbFaces;
                  break;
                case SMESH::VOLUME:
                  str += "Volumes";
                  anIDsVolumes->length(anNbVolumes);
                  anLen = anNbVolumes;
                  break;
                case SMESH::BALL:
                  str += "Balls";
                  anIDsBalls->length(aNbBalls);
                  anLen = aNbBalls;
                  break;
                default:
                  break;
                }

                if(anLen) {
                  aGroupName = str.c_str();

                  // add a new group in the mesh
                  aNewGroup = aNewImpl->CreateGroup(aGroupType, aGroupName);

                  switch(aGroupType) {
                  case SMESH::NODE:
                    aNewGroup->Add( anIDsNodes );
                    break;
                  case SMESH::EDGE:
                    aNewGroup->Add( anIDsEdges );
                    break;
                  case SMESH::FACE:
                    aNewGroup->Add( anIDsFaces );
                    break;
                  case SMESH::VOLUME:
                    aNewGroup->Add( anIDsVolumes );
                    break;
                  case SMESH::BALL:
                    aNewGroup->Add( anIDsBalls );
                    break;
                  default:
                    break;
                  }

                  aListOfNewGroups.clear();
                  aListOfNewGroups.push_back(aNewGroup);
                  aGroupsMap.insert(make_pair( make_pair(aGroupName, aGroupType), aListOfNewGroups ));
                }
              }
            }

            // check that current group name and type don't have identical ones in union mesh
            for (int i = 0; i < aListOfGroups->length(); i++) {
              aGroup = aListOfGroups[i];
              aListOfNewGroups.clear();
              aGroupType = aGroup->GetType();
              aGroupName = aGroup->GetName();

              TGroupsMap::iterator anIter = aGroupsMap.find(make_pair(aGroupName, aGroupType));

              // convert a list of IDs
              anInitIDs = aGroup->GetListOfID();
              anNewIDs->length(anInitIDs->length());
              if ( aGroupType == SMESH::NODE )
                for (int j = 0; j < anInitIDs->length(); j++) {
                  anNewIDs[j] = nodesMap.find(anInitIDs[j])->second;
                }
              else
                for (int j = 0; j < anInitIDs->length(); j++) {
                  anNewIDs[j] = elemsMap.find(anInitIDs[j])->second;
                }

              // check that current group name and type don't have identical ones in union mesh
              if ( anIter == aGroupsMap.end() ) {
                // add a new group in the mesh
                aNewGroup = aNewImpl->CreateGroup(aGroupType, aGroupName);
                // add elements into new group
                aNewGroup->Add( anNewIDs );

                aListOfNewGroups.push_back(aNewGroup);
                aGroupsMap.insert(make_pair( make_pair(aGroupName, aGroupType), aListOfNewGroups ));
              }

              else if ( theUniteIdenticalGroups ) {
                // unite identical groups
                TListOfNewGroups& aNewGroups = anIter->second;
                aNewGroups.front()->Add( anNewIDs );
              }

              else {
                // rename identical groups
                aNewGroup = aNewImpl->CreateGroup(aGroupType, aGroupName);
                aNewGroup->Add( anNewIDs );

                TListOfNewGroups& aNewGroups = anIter->second;
                string aNewGroupName;
                if (aNewGroups.size() == 1) {
                  aNewGroupName = string(aGroupName) + "_1";
                  aNewGroups.front()->SetName(aNewGroupName.c_str());
                }
                char aGroupNum[128];
                sprintf(aGroupNum, "%u", aNewGroups.size()+1);
                aNewGroupName = string(aGroupName) + "_" + string(aGroupNum);
                aNewGroup->SetName(aNewGroupName.c_str());
                aNewGroups.push_back(aNewGroup);
              }
            }//groups loop
          }
        }
      }//meshes loop

      if (theMergeNodesAndElements) {
        // merge nodes
        TIDSortedNodeSet aMeshNodes; // no input nodes
        SMESH_MeshEditor::TListOfListOfNodes aGroupsOfNodes;
        aNewEditor.FindCoincidentNodes( aMeshNodes, theMergeTolerance, aGroupsOfNodes );
        aNewEditor.MergeNodes( aGroupsOfNodes );
        // merge elements
        aNewEditor.MergeEqualElements();
      }
    }
  }

  // Update Python script
  aPythonDump << aNewMesh << " = " << this;
  if( !theCommonGroups )
    aPythonDump << ".Concatenate(";
  else
    aPythonDump << ".ConcatenateWithGroups(";
  aPythonDump << "[";
  for ( int i = 0; i < theMeshesArray.length(); i++) {
    if (i > 0) aPythonDump << ", ";
    aPythonDump << theMeshesArray[i];
  }
  aPythonDump << "], ";
  aPythonDump << theUniteIdenticalGroups << ", "
              << theMergeNodesAndElements << ", "
              << TVar( theMergeTolerance ) << ")";

  delete pPythonDump; // enable python dump from GetGroups()

  // 0020577: EDF 1164 SMESH: Bad dump of concatenate with create common groups
  if ( !aNewMesh->_is_nil() )
  {
    SMESH::ListOfGroups_var groups = aNewMesh->GetGroups();
  }

  // IPAL21468 Change icon of compound because it need not be computed.
  SALOMEDS::SObject_var aMeshSObj = ObjectToSObject( myCurrentStudy, aNewMesh );
  SetPixMap( aMeshSObj, "ICON_SMESH_TREE_MESH" );

  if (aNewMeshDS)
    aNewMeshDS->Modified();
  return aNewMesh._retn();
}

//================================================================================
/*!
 * \brief Create a mesh by copying a part of another mesh
 *  \param meshPart - a part of mesh to copy
 *  \param toCopyGroups - to create in the new mesh groups
 *                        the copied elements belongs to
 *  \param toKeepIDs - to preserve IDs of the copied elements or not
 *  \retval SMESH::SMESH_Mesh_ptr - the new mesh
 */
//================================================================================

SMESH::SMESH_Mesh_ptr SMESH_Gen_i::CopyMesh(SMESH::SMESH_IDSource_ptr meshPart,
                                            const char*               meshName,
                                            CORBA::Boolean            toCopyGroups,
                                            CORBA::Boolean            toKeepIDs)
{
  Unexpect aCatch(SALOME_SalomeException);

  TPythonDump* pyDump = new TPythonDump; // prevent dump from CreateMesh()

  // 1. Get source mesh

  if ( CORBA::is_nil( meshPart ))
    THROW_SALOME_CORBA_EXCEPTION( "bad IDSource", SALOME::BAD_PARAM );

  SMESH::SMESH_Mesh_var srcMesh = meshPart->GetMesh();
  SMESH_Mesh_i*       srcMesh_i = SMESH::DownCast<SMESH_Mesh_i*>( srcMesh );
  if ( !srcMesh_i )
    THROW_SALOME_CORBA_EXCEPTION( "bad mesh of IDSource", SALOME::BAD_PARAM );

  SMESHDS_Mesh* srcMeshDS = srcMesh_i->GetImpl().GetMeshDS();

  // 2. Make a new mesh

  SMESH::SMESH_Mesh_var newMesh = CreateMesh(GEOM::GEOM_Object::_nil());
  SMESH_Mesh_i*       newMesh_i = SMESH::DownCast<SMESH_Mesh_i*>( newMesh );
  if ( !newMesh_i )
    THROW_SALOME_CORBA_EXCEPTION( "can't create a mesh", SALOME::INTERNAL_ERROR );
  SALOMEDS::SObject_var meshSO = ObjectToSObject(myCurrentStudy, newMesh );
  if ( !meshSO->_is_nil() )
  {
    SetName( meshSO, meshName, "Mesh" );
    SetPixMap( meshSO, "ICON_SMESH_TREE_MESH_IMPORTED");
  }
  SMESHDS_Mesh* newMeshDS = newMesh_i->GetImpl().GetMeshDS();
  ::SMESH_MeshEditor editor( &newMesh_i->GetImpl() );

  // 3. Get elements to copy

  SMDS_ElemIteratorPtr srcElemIt; SMDS_NodeIteratorPtr srcNodeIt;
  TIDSortedElemSet srcElems;
  SMESH::array_of_ElementType_var srcElemTypes = meshPart->GetTypes();
  if ( SMESH::DownCast<SMESH_Mesh_i*>( meshPart ))
  {
    srcElemIt = srcMeshDS->elementsIterator();
    srcNodeIt = srcMeshDS->nodesIterator();
  }
  else
  {
    SMESH::long_array_var ids = meshPart->GetIDs();
    if ( srcElemTypes->length() == 1 && srcElemTypes[0] == SMESH::NODE ) // group of nodes
    {
      for (int i=0; i < ids->length(); i++)
        if ( const SMDS_MeshElement * elem = srcMeshDS->FindNode( ids[i] ))
          srcElems.insert( elem );
    }
    else
    {
      for (int i=0; i < ids->length(); i++)
        if ( const SMDS_MeshElement * elem = srcMeshDS->FindElement( ids[i] ))
          srcElems.insert( elem );
    }
    if ( srcElems.empty() )
      return newMesh._retn();

    typedef SMDS_SetIterator< SMDS_pElement, TIDSortedElemSet::const_iterator > ElIter;
    srcElemIt = SMDS_ElemIteratorPtr( new ElIter( srcElems.begin(), srcElems.end() ));
  }

  // 4. Copy elements

  typedef map<SMDS_pElement, SMDS_pElement, TIDCompare> TE2EMap;
  TE2EMap e2eMapByType[ SMDSAbs_NbElementTypes ];
  TE2EMap& n2nMap = e2eMapByType[ SMDSAbs_Node ];
  int iN;
  const SMDS_MeshNode *nSrc, *nTgt;
  vector< const SMDS_MeshNode* > nodes;
  while ( srcElemIt->more() )
  {
    const SMDS_MeshElement * elem = srcElemIt->next();
    // find / add nodes
    nodes.resize( elem->NbNodes());
    SMDS_ElemIteratorPtr nIt = elem->nodesIterator();
    if ( toKeepIDs ) {
      for ( iN = 0; nIt->more(); ++iN )
      {
        nSrc = static_cast<const SMDS_MeshNode*>( nIt->next() );
        nTgt = newMeshDS->FindNode( nSrc->GetID());
        if ( !nTgt )
          nTgt = newMeshDS->AddNodeWithID( nSrc->X(), nSrc->Y(), nSrc->Z(), nSrc->GetID());
        nodes[ iN ] = nTgt;
      }
    }
    else {
      for ( iN = 0; nIt->more(); ++iN )
      {
        nSrc = static_cast<const SMDS_MeshNode*>( nIt->next() );
        TE2EMap::iterator n2n = n2nMap.insert( make_pair( nSrc, SMDS_pNode(0) )).first;
        if ( !n2n->second )
          n2n->second = newMeshDS->AddNode( nSrc->X(), nSrc->Y(), nSrc->Z() );
        nodes[ iN ] = (const SMDS_MeshNode*) n2n->second;
      }
    }
    // add elements
    if ( elem->GetType() != SMDSAbs_Node )
    {
      int ID = toKeepIDs ? elem->GetID() : 0;
      const SMDS_MeshElement * newElem;
      switch ( elem->GetEntityType() ) {
      case SMDSEntity_Polyhedra:
        newElem = editor.GetMeshDS()->
          AddPolyhedralVolumeWithID( nodes,
                                     static_cast<const SMDS_VtkVolume*>(elem)->GetQuantities(),
                                     ID);
        break;
      case SMDSEntity_Ball:
        newElem = editor.AddElement( nodes, SMDSAbs_Ball, false, ID,
                                     static_cast<const SMDS_BallElement*>(elem)->GetDiameter());
        break;
      default:
        newElem = editor.AddElement( nodes,elem->GetType(),elem->IsPoly(),ID);

      if ( toCopyGroups && !toKeepIDs )
        e2eMapByType[ elem->GetType() ].insert( make_pair( elem, newElem ));
      }
    }
  } // while ( srcElemIt->more() )

  // 4(b). Copy free nodes

  if ( srcNodeIt && srcMeshDS->NbNodes() != newMeshDS->NbNodes() )
  {
    while ( srcNodeIt->more() )
    {
      nSrc = srcNodeIt->next();
      if ( nSrc->NbInverseElements() == 0 )
      {
        if ( toKeepIDs )
          nTgt = newMeshDS->AddNodeWithID( nSrc->X(), nSrc->Y(), nSrc->Z(), nSrc->GetID());
        else
          n2nMap[ nSrc ] = newMeshDS->AddNode( nSrc->X(), nSrc->Y(), nSrc->Z() );
      }
    }
  }

  // 5. Copy groups

  int nbNewGroups = 0;
  if ( toCopyGroups )
  {
    SMESH_Mesh::GroupIteratorPtr gIt = srcMesh_i->GetImpl().GetGroups();
    while ( gIt->more() )
    {
      SMESH_Group* group = gIt->next();
      const SMESHDS_GroupBase* groupDS = group->GetGroupDS();

      // Check group type. We copy nodal groups containing nodes of copied element
      SMDSAbs_ElementType groupType = groupDS->GetType();
      if ( groupType != SMDSAbs_Node &&
           newMeshDS->GetMeshInfo().NbElements( groupType ) == 0 )
        continue; // group type differs from types of meshPart

      // Find copied elements in the group
      vector< const SMDS_MeshElement* > groupElems;
      SMDS_ElemIteratorPtr eIt = groupDS->GetElements();
      if ( toKeepIDs )
      {
        const SMDS_MeshElement* foundElem;
        if ( groupType == SMDSAbs_Node )
        {
          while ( eIt->more() )
            if (( foundElem = newMeshDS->FindNode( eIt->next()->GetID() )))
              groupElems.push_back( foundElem );
        }
        else
        {
          while ( eIt->more() )
            if (( foundElem = newMeshDS->FindElement( eIt->next()->GetID() )))
              groupElems.push_back( foundElem );
        }
      }
      else
      {
        TE2EMap & e2eMap = e2eMapByType[ groupDS->GetType() ];
        if ( e2eMap.empty() ) continue;
        int minID = e2eMap.begin()->first->GetID();
        int maxID = e2eMap.rbegin()->first->GetID();
        TE2EMap::iterator e2e;
        while ( eIt->more() && groupElems.size() < e2eMap.size())
        {
          const SMDS_MeshElement* e = eIt->next();
          if ( e->GetID() < minID || e->GetID() > maxID ) continue;
          if ((e2e = e2eMap.find( e )) != e2eMap.end())
            groupElems.push_back( e2e->second );
        }
      }
      // Make a new group
      if ( !groupElems.empty() )
      {
        SMESH::SMESH_Group_var newGroupObj =
          newMesh->CreateGroup( SMESH::ElementType(groupType), group->GetName() );
        if ( SMESH_GroupBase_i* newGroup_i = SMESH::DownCast<SMESH_GroupBase_i*>( newGroupObj))
        {
          SMESHDS_GroupBase * newGroupDS = newGroup_i->GetGroupDS();
          SMDS_MeshGroup& smdsGroup = ((SMESHDS_Group*)newGroupDS)->SMDSGroup();
          for ( unsigned i = 0; i < groupElems.size(); ++i )
            smdsGroup.Add( groupElems[i] );

          nbNewGroups++;
        }
      }
    }
  }

  newMeshDS->Modified();

  *pyDump << newMesh << " = " << this
          << ".CopyMesh( " << meshPart << ", "
          << "'" << meshName << "', "
          << toCopyGroups << ", "
          << toKeepIDs << ")";

  delete pyDump; pyDump = 0; // allow dump in GetGroups()

  if ( nbNewGroups > 0 ) // dump created groups
    SMESH::ListOfGroups_var groups = newMesh->GetGroups();

  return newMesh._retn();
}

//================================================================================
/*!
 *  SMESH_Gen_i::GetMEDVersion
 *
 *  Get MED version of the file by its name
 */
//================================================================================
CORBA::Boolean SMESH_Gen_i::GetMEDVersion(const char* theFileName,
                                          SMESH::MED_VERSION& theVersion)
{
  theVersion = SMESH::MED_V2_1;
  MED::EVersion aVersion = MED::GetVersionId( theFileName );
  switch( aVersion ) {
    case MED::eV2_1     : theVersion = SMESH::MED_V2_1; return true;
    case MED::eV2_2     : theVersion = SMESH::MED_V2_2; return true;
    case MED::eVUnknown : return false;
  }
  return false;
}

//================================================================================
/*!
 *  SMESH_Gen_i::GetMeshNames
 *
 *  Get names of meshes defined in file with the specified name
 */
//================================================================================
SMESH::string_array* SMESH_Gen_i::GetMeshNames(const char* theFileName)
{
  SMESH::string_array_var aResult = new SMESH::string_array();
  MED::PWrapper aMed = MED::CrWrapper( theFileName );
  MED::TErr anErr;
  MED::TInt aNbMeshes = aMed->GetNbMeshes( &anErr );
  if( anErr >= 0 ) {
    aResult->length( aNbMeshes );
    for( MED::TInt i = 0; i < aNbMeshes; i++ ) {
      MED::PMeshInfo aMeshInfo = aMed->GetPMeshInfo( i+1 );
      aResult[i] = CORBA::string_dup( aMeshInfo->GetName().c_str() );
    }
  }
  return aResult._retn();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::Save
 *
 *  Save SMESH module's data
 */
//=============================================================================
SALOMEDS::TMPFile* SMESH_Gen_i::Save( SALOMEDS::SComponent_ptr theComponent,
                                      const char*              theURL,
                                      bool                     isMultiFile )
{
  INFOS( "SMESH_Gen_i::Save" );

  //  ASSERT( theComponent->GetStudy()->StudyId() == myCurrentStudy->StudyId() )
  // san -- in case <myCurrentStudy> differs from theComponent's study,
  // use that of the component
  if ( myCurrentStudy->_is_nil() ||
    theComponent->GetStudy()->StudyId() != myCurrentStudy->StudyId() )
    SetCurrentStudy( theComponent->GetStudy() );

  // Store study contents as a set of python commands
  SavePython(myCurrentStudy);

  StudyContext* myStudyContext = GetCurrentStudyContext();

  // Declare a byte stream
  SALOMEDS::TMPFile_var aStreamFile;

  // Obtain a temporary dir
  TCollection_AsciiString tmpDir =
    ( isMultiFile ) ? TCollection_AsciiString( ( char* )theURL ) : ( char* )SALOMEDS_Tool::GetTmpDir().c_str();

  // Create a sequence of files processed
  SALOMEDS::ListOfFileNames_var aFileSeq = new SALOMEDS::ListOfFileNames;
  aFileSeq->length( NUM_TMP_FILES );

  TCollection_AsciiString aStudyName( "" );
  if ( isMultiFile )
    aStudyName = ( (char*)SALOMEDS_Tool::GetNameFromPath( myCurrentStudy->URL() ).c_str() );

  // Set names of temporary files
  TCollection_AsciiString filename =
    aStudyName + TCollection_AsciiString( "_SMESH.hdf" );        // for SMESH data itself
  TCollection_AsciiString meshfile =
    aStudyName + TCollection_AsciiString( "_SMESH_Mesh.med" );   // for mesh data to be stored in MED file
  aFileSeq[ 0 ] = CORBA::string_dup( filename.ToCString() );
  aFileSeq[ 1 ] = CORBA::string_dup( meshfile.ToCString() );
  filename = tmpDir + filename;
  meshfile = tmpDir + meshfile;

  HDFfile*    aFile;
  HDFdataset* aDataset;
  HDFgroup*   aTopGroup;
  HDFgroup*   aGroup;
  HDFgroup*   aSubGroup;
  HDFgroup*   aSubSubGroup;
  hdf_size    aSize[ 1 ];


  //Remove the files if they exist: BugID: 11225
#ifndef WNT /* unix functionality */
  TCollection_AsciiString cmd("rm -f \"");
#else /* windows */
  TCollection_AsciiString cmd("del /F \"");
#endif

  cmd+=filename;
  cmd+="\" \"";
  cmd+=meshfile;
  cmd+="\"";
  system(cmd.ToCString());

  // MED writer to be used by storage process
  DriverMED_W_SMESHDS_Mesh myWriter;
  myWriter.SetFile( meshfile.ToCString() );

  // IMP issue 20918
  // SetStoreName() to groups before storing hypotheses to let them refer to
  // groups using "store name", which is "Group <group_persistent_id>"
  {
    SALOMEDS::ChildIterator_var itBig = myCurrentStudy->NewChildIterator( theComponent );
    for ( ; itBig->More(); itBig->Next() ) {
      SALOMEDS::SObject_var gotBranch = itBig->Value();
      if ( gotBranch->Tag() > GetAlgorithmsRootTag() ) {
        CORBA::Object_var anObject = SObjectToObject( gotBranch );
        if ( !CORBA::is_nil( anObject ) ) {
          SMESH::SMESH_Mesh_var myMesh = SMESH::SMESH_Mesh::_narrow( anObject ) ;
          if ( !myMesh->_is_nil() ) {
            myMesh->Load(); // load from study file if not yet done
            TPythonDump pd; // not to dump GetGroups()
            SMESH::ListOfGroups_var groups = myMesh->GetGroups();
            pd << ""; // to avoid optimizing pd out
            for ( int i = 0; i < groups->length(); ++i )
            {
              SMESH_GroupBase_i* grImpl = SMESH::DownCast<SMESH_GroupBase_i*>( groups[i]);
              if ( grImpl )
              {
                CORBA::String_var objStr = GetORB()->object_to_string( grImpl->_this() );
                int anId = myStudyContext->findId( string( objStr.in() ) );
                char grpName[ 30 ];
                sprintf( grpName, "Group %d", anId );
                SMESHDS_GroupBase* aGrpBaseDS = grImpl->GetGroupDS();
                aGrpBaseDS->SetStoreName( grpName );
              }
            }
          }
        }
      }
    }
  }

  // Write data
  // ---> create HDF file
  aFile = new HDFfile( (char*) filename.ToCString() );
  aFile->CreateOnDisk();

  // --> iterator for top-level objects
  SALOMEDS::ChildIterator_var itBig = myCurrentStudy->NewChildIterator( theComponent );
  for ( ; itBig->More(); itBig->Next() ) {
    SALOMEDS::SObject_var gotBranch = itBig->Value();

    // --> hypotheses root branch (only one for the study)
    if ( gotBranch->Tag() == GetHypothesisRootTag() ) {
      // create hypotheses root HDF group
      aTopGroup = new HDFgroup( "Hypotheses", aFile );
      aTopGroup->CreateOnDisk();

      // iterator for all hypotheses
      SALOMEDS::ChildIterator_var it = myCurrentStudy->NewChildIterator( gotBranch );
      for ( ; it->More(); it->Next() ) {
        SALOMEDS::SObject_var mySObject = it->Value();
        CORBA::Object_var anObject = SObjectToObject( mySObject );
        if ( !CORBA::is_nil( anObject ) ) {
          SMESH::SMESH_Hypothesis_var myHyp = SMESH::SMESH_Hypothesis::_narrow( anObject );
          if ( !myHyp->_is_nil() ) {
            SMESH_Hypothesis_i* myImpl = dynamic_cast<SMESH_Hypothesis_i*>( GetServant( myHyp ).in() );
            if ( myImpl ) {
              string hypname = string( myHyp->GetName() );
              string libname = string( myHyp->GetLibName() );
              // BUG SWP13062
              // Needs for save crossplatform libname, i.e. parth of name ( ".dll" for
              // WNT and ".so" for X-system) must be deleted
              int libname_len = libname.length();
#ifdef WNT
              if( libname_len > 4 )
                libname.resize( libname_len - 4 );
#else
              // PAL17753 (Regresion: missing hypothesis in restored study)
              // "lib" also should be removed from the beginning
              //if( libname_len > 3 )
                //libname.resize( libname_len - 3 );
              if( libname_len > 6 )
                libname = libname.substr( 3, libname_len - 3 - 3 );
#endif
              CORBA::String_var objStr = GetORB()->object_to_string( anObject );
              int    id      = myStudyContext->findId( string( objStr.in() ) );
              string hypdata = string( myImpl->SaveTo() );

              // for each hypothesis create HDF group basing on its id
              char hypGrpName[30];
              sprintf( hypGrpName, "Hypothesis %d", id );
              aGroup = new HDFgroup( hypGrpName, aTopGroup );
              aGroup->CreateOnDisk();
              // --> type name of hypothesis
              aSize[ 0 ] = hypname.length() + 1;
              aDataset = new HDFdataset( "Name", aGroup, HDF_STRING, aSize, 1 );
              aDataset->CreateOnDisk();
              aDataset->WriteOnDisk( ( char* )( hypname.c_str() ) );
              aDataset->CloseOnDisk();
              // --> server plugin library name of hypothesis
              aSize[ 0 ] = libname.length() + 1;
              aDataset = new HDFdataset( "LibName", aGroup, HDF_STRING, aSize, 1 );
              aDataset->CreateOnDisk();
              aDataset->WriteOnDisk( ( char* )( libname.c_str() ) );
              aDataset->CloseOnDisk();
              // --> persistent data of hypothesis
              aSize[ 0 ] = hypdata.length() + 1;
              aDataset = new HDFdataset( "Data", aGroup, HDF_STRING, aSize, 1 );
              aDataset->CreateOnDisk();
              aDataset->WriteOnDisk( ( char* )( hypdata.c_str() ) );
              aDataset->CloseOnDisk();
              // close hypothesis HDF group
              aGroup->CloseOnDisk();
            }
          }
        }
      }
      // close hypotheses root HDF group
      aTopGroup->CloseOnDisk();
    }
    // --> algorithms root branch (only one for the study)
    else if ( gotBranch->Tag() == GetAlgorithmsRootTag() ) {
      // create algorithms root HDF group
      aTopGroup = new HDFgroup( "Algorithms", aFile );
      aTopGroup->CreateOnDisk();

      // iterator for all algorithms
      SALOMEDS::ChildIterator_var it = myCurrentStudy->NewChildIterator( gotBranch );
      for ( ; it->More(); it->Next() ) {
        SALOMEDS::SObject_var mySObject = it->Value();
        CORBA::Object_var anObject = SObjectToObject( mySObject );
        if ( !CORBA::is_nil( anObject ) ) {
          SMESH::SMESH_Hypothesis_var myHyp = SMESH::SMESH_Hypothesis::_narrow( anObject );
          if ( !myHyp->_is_nil() ) {
            SMESH_Hypothesis_i* myImpl = dynamic_cast<SMESH_Hypothesis_i*>( GetServant( myHyp ).in() );
            if ( myImpl ) {
              string hypname = string( myHyp->GetName() );
              string libname = string( myHyp->GetLibName() );
              // BUG SWP13062
              // Needs for save crossplatform libname, i.e. parth of name ( ".dll" for
              // WNT and ".so" for X-system) must be deleted
              int libname_len = libname.length();
#ifdef WNT
              if( libname_len > 4 )
                libname.resize( libname_len - 4 );
#else
              // PAL17753 (Regresion: missing hypothesis in restored study)
              // "lib" also should be removed from the beginning
              //if( libname_len > 3 )
                //libname.resize( libname_len - 3 );
              if( libname_len > 6 )
                libname = libname.substr( 3, libname_len - 3 - 3 );
#endif
              CORBA::String_var objStr = GetORB()->object_to_string( anObject );
              int    id      = myStudyContext->findId( string( objStr.in() ) );
              string hypdata = string( myImpl->SaveTo() );

              // for each algorithm create HDF group basing on its id
              char hypGrpName[30];
              sprintf( hypGrpName, "Algorithm %d", id );
              aGroup = new HDFgroup( hypGrpName, aTopGroup );
              aGroup->CreateOnDisk();
              // --> type name of algorithm
              aSize[0] = hypname.length() + 1;
              aDataset = new HDFdataset( "Name", aGroup, HDF_STRING, aSize, 1 );
              aDataset->CreateOnDisk();
              aDataset->WriteOnDisk( ( char* )( hypname.c_str() ) );
              aDataset->CloseOnDisk();
              // --> server plugin library name of hypothesis
              aSize[0] = libname.length() + 1;
              aDataset = new HDFdataset( "LibName", aGroup, HDF_STRING, aSize, 1 );
              aDataset->CreateOnDisk();
              aDataset->WriteOnDisk( ( char* )( libname.c_str() ) );
              aDataset->CloseOnDisk();
              // --> persistent data of algorithm
              aSize[0] = hypdata.length() + 1;
              aDataset = new HDFdataset( "Data", aGroup, HDF_STRING, aSize, 1 );
              aDataset->CreateOnDisk();
              aDataset->WriteOnDisk( ( char* )( hypdata.c_str() ) );
              aDataset->CloseOnDisk();
              // close algorithm HDF group
              aGroup->CloseOnDisk();
            }
          }
        }
      }
      // close algorithms root HDF group
      aTopGroup->CloseOnDisk();
    }
    // --> mesh objects roots branches
    else if ( gotBranch->Tag() > GetAlgorithmsRootTag() ) {
      CORBA::Object_var anObject = SObjectToObject( gotBranch );
      if ( !CORBA::is_nil( anObject ) ) {
        SMESH::SMESH_Mesh_var myMesh = SMESH::SMESH_Mesh::_narrow( anObject ) ;
        if ( !myMesh->_is_nil() ) {
          SMESH_Mesh_i* myImpl = dynamic_cast<SMESH_Mesh_i*>( GetServant( myMesh ).in() );
          if ( myImpl ) {
            CORBA::String_var objStr = GetORB()->object_to_string( anObject );
            int id = myStudyContext->findId( string( objStr.in() ) );
            ::SMESH_Mesh& myLocMesh = myImpl->GetImpl();
            SMESHDS_Mesh* mySMESHDSMesh = myLocMesh.GetMeshDS();
            bool hasShape = myLocMesh.HasShapeToMesh();

            // for each mesh open the HDF group basing on its id
            char meshGrpName[ 30 ];
            sprintf( meshGrpName, "Mesh %d", id );
            aTopGroup = new HDFgroup( meshGrpName, aFile );
            aTopGroup->CreateOnDisk();

            // --> put dataset to hdf file which is a flag that mesh has data
            string strHasData = "0";
            // check if the mesh is not empty
            if ( mySMESHDSMesh->NbNodes() > 0 ) {
              // write mesh data to med file
              myWriter.SetMesh( mySMESHDSMesh );
              myWriter.SetMeshId( id );
              strHasData = "1";
            }
            aSize[ 0 ] = strHasData.length() + 1;
            aDataset = new HDFdataset( "Has data", aTopGroup, HDF_STRING, aSize, 1 );
            aDataset->CreateOnDisk();
            aDataset->WriteOnDisk( ( char* )( strHasData.c_str() ) );
            aDataset->CloseOnDisk();

            // ouv : NPAL12872
            // for each mesh open the HDF group basing on its auto color parameter
            char meshAutoColorName[ 30 ];
            sprintf( meshAutoColorName, "AutoColorMesh %d", id );
            int anAutoColor[1];
            anAutoColor[0] = myImpl->GetAutoColor();
            aSize[ 0 ] = 1;
            aDataset = new HDFdataset( meshAutoColorName, aTopGroup, HDF_INT32, aSize, 1 );
            aDataset->CreateOnDisk();
            aDataset->WriteOnDisk( anAutoColor );
            aDataset->CloseOnDisk();

            // issue 0020693. Store _isModified flag
            int isModified = myLocMesh.GetIsModified();
            aSize[ 0 ] = 1;
            aDataset = new HDFdataset( "_isModified", aTopGroup, HDF_INT32, aSize, 1 );
            aDataset->CreateOnDisk();
            aDataset->WriteOnDisk( &isModified );
            aDataset->CloseOnDisk();

            // issue 20918. Store Persistent Id of SMESHDS_Mesh
            int meshPersistentId = mySMESHDSMesh->GetPersistentId();
            aSize[ 0 ] = 1;
            aDataset = new HDFdataset( "meshPersistentId", aTopGroup, HDF_INT32, aSize, 1 );
            aDataset->CreateOnDisk();
            aDataset->WriteOnDisk( &meshPersistentId );
            aDataset->CloseOnDisk();

            // write reference on a shape if exists
            SALOMEDS::SObject_var myRef;
            bool shapeRefFound = false;
            bool found = gotBranch->FindSubObject( GetRefOnShapeTag(), myRef );
            if ( found ) {
              SALOMEDS::SObject_var myShape;
              bool ok = myRef->ReferencedObject( myShape );
              if ( ok ) {
                shapeRefFound = (! CORBA::is_nil( myShape->GetObject() ));
                string myRefOnObject = myShape->GetID();
                if ( shapeRefFound && myRefOnObject.length() > 0 ) {
                  aSize[ 0 ] = myRefOnObject.length() + 1;
                  aDataset = new HDFdataset( "Ref on shape", aTopGroup, HDF_STRING, aSize, 1 );
                  aDataset->CreateOnDisk();
                  aDataset->WriteOnDisk( ( char* )( myRefOnObject.c_str() ) );
                  aDataset->CloseOnDisk();
                }
              }
            }

            // write applied hypotheses if exist
            SALOMEDS::SObject_var myHypBranch;
            found = gotBranch->FindSubObject( GetRefOnAppliedHypothesisTag(), myHypBranch );
            if ( found && !shapeRefFound && hasShape) { // remove applied hyps
              myCurrentStudy->NewBuilder()->RemoveObjectWithChildren( myHypBranch );
            }
            if ( found && (shapeRefFound || !hasShape) ) {
              aGroup = new HDFgroup( "Applied Hypotheses", aTopGroup );
              aGroup->CreateOnDisk();

              SALOMEDS::ChildIterator_var it = myCurrentStudy->NewChildIterator( myHypBranch );
              int hypNb = 0;
              for ( ; it->More(); it->Next() ) {
                SALOMEDS::SObject_var mySObject = it->Value();
                SALOMEDS::SObject_var myRefOnHyp;
                bool ok = mySObject->ReferencedObject( myRefOnHyp );
                if ( ok ) {
                  // san - it is impossible to recover applied hypotheses
                  //       using their entries within Load() method,
                  // for there are no AttributeIORs in the study when Load() is working.
                  // Hence, it is better to store persistent IDs of hypotheses as references to them

                  //string myRefOnObject = myRefOnHyp->GetID();
                  CORBA::Object_var anObject = SObjectToObject( myRefOnHyp );
                  CORBA::String_var objStr = GetORB()->object_to_string( anObject );
                  int id = myStudyContext->findId( string( objStr.in() ) );
                  //if ( myRefOnObject.length() > 0 ) {
                  //aSize[ 0 ] = myRefOnObject.length() + 1;
                  char hypName[ 30 ], hypId[ 30 ];
                  sprintf( hypName, "Hyp %d", ++hypNb );
                  sprintf( hypId, "%d", id );
                  aSize[ 0 ] = strlen( hypId ) + 1;
                  aDataset = new HDFdataset( hypName, aGroup, HDF_STRING, aSize, 1 );
                  aDataset->CreateOnDisk();
                  //aDataset->WriteOnDisk( ( char* )( myRefOnObject.c_str() ) );
                  aDataset->WriteOnDisk( hypId );
                  aDataset->CloseOnDisk();
                  //}
                }
              }
              aGroup->CloseOnDisk();
            }

            // write applied algorithms if exist
            SALOMEDS::SObject_var myAlgoBranch;
            found = gotBranch->FindSubObject( GetRefOnAppliedAlgorithmsTag(), myAlgoBranch );
            if ( found && !shapeRefFound && hasShape) { // remove applied algos
              myCurrentStudy->NewBuilder()->RemoveObjectWithChildren( myAlgoBranch );
            }
            if ( found && (shapeRefFound || !hasShape)) {
              aGroup = new HDFgroup( "Applied Algorithms", aTopGroup );
              aGroup->CreateOnDisk();

              SALOMEDS::ChildIterator_var it = myCurrentStudy->NewChildIterator( myAlgoBranch );
              int algoNb = 0;
              for ( ; it->More(); it->Next() ) {
                SALOMEDS::SObject_var mySObject = it->Value();
                SALOMEDS::SObject_var myRefOnAlgo;
                bool ok = mySObject->ReferencedObject( myRefOnAlgo );
                if ( ok ) {
                  // san - it is impossible to recover applied algorithms
                  //       using their entries within Load() method,
                  // for there are no AttributeIORs in the study when Load() is working.
                  // Hence, it is better to store persistent IDs of algorithms as references to them

                  //string myRefOnObject = myRefOnAlgo->GetID();
                  CORBA::Object_var anObject = SObjectToObject( myRefOnAlgo );
                  CORBA::String_var objStr = GetORB()->object_to_string( anObject );
                  int id = myStudyContext->findId( string( objStr.in() ) );
                  //if ( myRefOnObject.length() > 0 ) {
                  //aSize[ 0 ] = myRefOnObject.length() + 1;
                  char algoName[ 30 ], algoId[ 30 ];
                  sprintf( algoName, "Algo %d", ++algoNb );
                  sprintf( algoId, "%d", id );
                  aSize[ 0 ] = strlen( algoId ) + 1;
                  aDataset = new HDFdataset( algoName, aGroup, HDF_STRING, aSize, 1 );
                  aDataset->CreateOnDisk();
                  //aDataset->WriteOnDisk( ( char* )( myRefOnObject.c_str() ) );
                  aDataset->WriteOnDisk( algoId );
                  aDataset->CloseOnDisk();
                  //}
                }
              }
              aGroup->CloseOnDisk();
            }

            // --> submesh objects sub-branches

            for ( int i = GetSubMeshOnVertexTag(); i <= GetSubMeshOnCompoundTag(); i++ ) {
              SALOMEDS::SObject_var mySubmeshBranch;
              found = gotBranch->FindSubObject( i, mySubmeshBranch );

              if ( found ) // check if there is shape reference in submeshes
              {
                bool hasShapeRef = false;
                SALOMEDS::ChildIterator_var itSM =
                  myCurrentStudy->NewChildIterator( mySubmeshBranch );
                for ( ; itSM->More(); itSM->Next() ) {
                  SALOMEDS::SObject_var mySubRef, myShape, mySObject = itSM->Value();
                  if ( mySObject->FindSubObject( GetRefOnShapeTag(), mySubRef ))
                    mySubRef->ReferencedObject( myShape );
                  if ( !CORBA::is_nil( myShape ) && !CORBA::is_nil( myShape->GetObject() ))
                    hasShapeRef = true;
                  else
                  { // remove one submesh
                    if ( shapeRefFound )
                    { // unassign hypothesis
                      SMESH::SMESH_subMesh_var mySubMesh =
                        SMESH::SMESH_subMesh::_narrow( SObjectToObject( mySObject ));
                      if ( !mySubMesh->_is_nil() ) {
                        int shapeID = mySubMesh->GetId();
                        TopoDS_Shape S = mySMESHDSMesh->IndexToShape( shapeID );
                        const list<const SMESHDS_Hypothesis*>& hypList =
                          mySMESHDSMesh->GetHypothesis( S );
                        list<const SMESHDS_Hypothesis*>::const_iterator hyp = hypList.begin();
                        while ( hyp != hypList.end() ) {
                          int hypID = (*hyp++)->GetID(); // goto next hyp here because
                          myLocMesh.RemoveHypothesis( S, hypID ); // hypList changes here
                        }
                      }
                    }
                    myCurrentStudy->NewBuilder()->RemoveObjectWithChildren( mySObject );
                  }
                } // loop on submeshes of a type
                if ( !shapeRefFound || !hasShapeRef ) { // remove the whole submeshes branch
                  myCurrentStudy->NewBuilder()->RemoveObjectWithChildren( mySubmeshBranch );
                  found = false;
                }
              }  // end check if there is shape reference in submeshes
              if ( found ) {
                char name_meshgroup[ 30 ];
                if ( i == GetSubMeshOnVertexTag() )
                  strcpy( name_meshgroup, "SubMeshes On Vertex" );
                else if ( i == GetSubMeshOnEdgeTag() )
                  strcpy( name_meshgroup, "SubMeshes On Edge" );
                else if ( i == GetSubMeshOnWireTag() )
                  strcpy( name_meshgroup, "SubMeshes On Wire" );
                else if ( i == GetSubMeshOnFaceTag() )
                  strcpy( name_meshgroup, "SubMeshes On Face" );
                else if ( i == GetSubMeshOnShellTag() )
                  strcpy( name_meshgroup, "SubMeshes On Shell" );
                else if ( i == GetSubMeshOnSolidTag() )
                  strcpy( name_meshgroup, "SubMeshes On Solid" );
                else if ( i == GetSubMeshOnCompoundTag() )
                  strcpy( name_meshgroup, "SubMeshes On Compound" );

                // for each type of submeshes create container HDF group
                aGroup = new HDFgroup( name_meshgroup, aTopGroup );
                aGroup->CreateOnDisk();

                // iterator for all submeshes of given type
                SALOMEDS::ChildIterator_var itSM = myCurrentStudy->NewChildIterator( mySubmeshBranch );
                for ( ; itSM->More(); itSM->Next() ) {
                  SALOMEDS::SObject_var mySObject = itSM->Value();
                  CORBA::Object_var anSubObject = SObjectToObject( mySObject );
                  if ( !CORBA::is_nil( anSubObject ))
                  {
                    SMESH::SMESH_subMesh_var mySubMesh = SMESH::SMESH_subMesh::_narrow( anSubObject ) ;
                    CORBA::String_var objStr = GetORB()->object_to_string( anSubObject );
                    int subid = myStudyContext->findId( string( objStr.in() ) );

                    // for each mesh open the HDF group basing on its id
                    char submeshGrpName[ 30 ];
                    sprintf( submeshGrpName, "SubMesh %d", subid );
                    aSubGroup = new HDFgroup( submeshGrpName, aGroup );
                    aSubGroup->CreateOnDisk();

                    // write reference on a shape, already checked if it exists
                    SALOMEDS::SObject_var mySubRef, myShape;
                    if ( mySObject->FindSubObject( GetRefOnShapeTag(), mySubRef ))
                      mySubRef->ReferencedObject( myShape );
                    string myRefOnObject = myShape->GetID();
                    if ( myRefOnObject.length() > 0 ) {
                      aSize[ 0 ] = myRefOnObject.length() + 1;
                      aDataset = new HDFdataset( "Ref on shape", aSubGroup, HDF_STRING, aSize, 1 );
                      aDataset->CreateOnDisk();
                      aDataset->WriteOnDisk( ( char* )( myRefOnObject.c_str() ) );
                      aDataset->CloseOnDisk();
                    }

                    // write applied hypotheses if exist
                    SALOMEDS::SObject_var mySubHypBranch;
                    found = mySObject->FindSubObject( GetRefOnAppliedHypothesisTag(), mySubHypBranch );
                    if ( found ) {
                      aSubSubGroup = new HDFgroup( "Applied Hypotheses", aSubGroup );
                      aSubSubGroup->CreateOnDisk();

                      SALOMEDS::ChildIterator_var it = myCurrentStudy->NewChildIterator( mySubHypBranch );
                      int hypNb = 0;
                      for ( ; it->More(); it->Next() ) {
                        SALOMEDS::SObject_var mySubSObject = it->Value();
                        SALOMEDS::SObject_var myRefOnHyp;
                        bool ok = mySubSObject->ReferencedObject( myRefOnHyp );
                        if ( ok ) {
                          //string myRefOnObject = myRefOnHyp->GetID();
                          CORBA::Object_var anObject = SObjectToObject( myRefOnHyp );
                          CORBA::String_var objStr = GetORB()->object_to_string( anObject );
                          int id = myStudyContext->findId( string( objStr.in() ) );
                          //if ( myRefOnObject.length() > 0 ) {
                          //aSize[ 0 ] = myRefOnObject.length() + 1;
                          char hypName[ 30 ], hypId[ 30 ];
                          sprintf( hypName, "Hyp %d", ++hypNb );
                          sprintf( hypId, "%d", id );
                          aSize[ 0 ] = strlen( hypId ) + 1;
                          aDataset = new HDFdataset( hypName, aSubSubGroup, HDF_STRING, aSize, 1 );
                          aDataset->CreateOnDisk();
                          //aDataset->WriteOnDisk( ( char* )( myRefOnObject.c_str() ) );
                          aDataset->WriteOnDisk( hypId );
                          aDataset->CloseOnDisk();
                          //}
                        }
                      }
                      aSubSubGroup->CloseOnDisk();
                    }

                    // write applied algorithms if exist
                    SALOMEDS::SObject_var mySubAlgoBranch;
                    found = mySObject->FindSubObject( GetRefOnAppliedAlgorithmsTag(), mySubAlgoBranch );
                    if ( found ) {
                      aSubSubGroup = new HDFgroup( "Applied Algorithms", aSubGroup );
                      aSubSubGroup->CreateOnDisk();

                      SALOMEDS::ChildIterator_var it = myCurrentStudy->NewChildIterator( mySubAlgoBranch );
                      int algoNb = 0;
                      for ( ; it->More(); it->Next() ) {
                        SALOMEDS::SObject_var mySubSObject = it->Value();
                        SALOMEDS::SObject_var myRefOnAlgo;
                        bool ok = mySubSObject->ReferencedObject( myRefOnAlgo );
                        if ( ok ) {
                          //string myRefOnObject = myRefOnAlgo->GetID();
                          CORBA::Object_var anObject = SObjectToObject( myRefOnAlgo );
                          CORBA::String_var objStr = GetORB()->object_to_string( anObject );
                          int id = myStudyContext->findId( string( objStr.in() ) );
                          //if ( myRefOnObject.length() > 0 ) {
                          //aSize[ 0 ] = myRefOnObject.length() + 1;
                          char algoName[ 30 ], algoId[ 30 ];
                          sprintf( algoName, "Algo %d", ++algoNb );
                          sprintf( algoId, "%d", id );
                          aSize[ 0 ] = strlen( algoId ) + 1;
                          aDataset = new HDFdataset( algoName, aSubSubGroup, HDF_STRING, aSize, 1 );
                          aDataset->CreateOnDisk();
                          //aDataset->WriteOnDisk( ( char* )( myRefOnObject.c_str() ) );
                          aDataset->WriteOnDisk( algoId );
                          aDataset->CloseOnDisk();
                          //}
                        }
                      }
                      aSubSubGroup->CloseOnDisk();
                    }
                    // close submesh HDF group
                    aSubGroup->CloseOnDisk();
                  }
                }
                // close container of submeshes by type HDF group
                aGroup->CloseOnDisk();
              }
            }
            // All sub-meshes will be stored in MED file
            // .. will NOT (PAL 12992)
            //if ( shapeRefFound )
            //myWriter.AddAllSubMeshes();

            // store submesh order if any
            const TListOfListOfInt& theOrderIds = myLocMesh.GetMeshOrder();
            if ( theOrderIds.size() ) {
              char order_list[ 30 ];
              strcpy( order_list, "Mesh Order" );
              // count number of submesh ids
              int nbIDs = 0;
              TListOfListOfInt::const_iterator idIt = theOrderIds.begin();
              for ( ; idIt != theOrderIds.end(); idIt++ )
                nbIDs += (*idIt).size();
              // number of values = number of IDs +
              //                    number of lists (for separators) - 1
              int* smIDs = new int [ nbIDs + theOrderIds.size() - 1 ];
              idIt = theOrderIds.begin();
              for ( int i = 0; idIt != theOrderIds.end(); idIt++ ) {
                const TListOfInt& idList = *idIt;
                if (idIt != theOrderIds.begin()) // not first list
                  smIDs[ i++ ] = -1/* *idList.size()*/; // separator between lists
                // dump submesh ids from current list
                TListOfInt::const_iterator id_smId = idList.begin();
                for( ; id_smId != idList.end(); id_smId++ )
                  smIDs[ i++ ] = *id_smId;
              }
              // write HDF group
              aSize[ 0 ] = nbIDs + theOrderIds.size() - 1;

              aDataset = new HDFdataset( order_list, aTopGroup, HDF_INT32, aSize, 1 );
              aDataset->CreateOnDisk();
              aDataset->WriteOnDisk( smIDs );
              aDataset->CloseOnDisk();
              //
              delete[] smIDs;
            }

            // groups root sub-branch
            SALOMEDS::SObject_var myGroupsBranch;
            for ( int i = GetNodeGroupsTag(); i <= GetBallElementsGroupsTag(); i++ ) {
              found = gotBranch->FindSubObject( i, myGroupsBranch );
              if ( found ) {
                char name_group[ 30 ];
                if ( i == GetNodeGroupsTag() )
                  strcpy( name_group, "Groups of Nodes" );
                else if ( i == GetEdgeGroupsTag() )
                  strcpy( name_group, "Groups of Edges" );
                else if ( i == GetFaceGroupsTag() )
                  strcpy( name_group, "Groups of Faces" );
                else if ( i == GetVolumeGroupsTag() )
                  strcpy( name_group, "Groups of Volumes" );
                else if ( i == Get0DElementsGroupsTag() )
                  strcpy( name_group, "Groups of 0D Elements" );
                else if ( i == GetBallElementsGroupsTag() )
                  strcpy( name_group, "Groups of Balls" );

                aGroup = new HDFgroup( name_group, aTopGroup );
                aGroup->CreateOnDisk();

                SALOMEDS::ChildIterator_var it = myCurrentStudy->NewChildIterator( myGroupsBranch );
                for ( ; it->More(); it->Next() ) {
                  SALOMEDS::SObject_var mySObject = it->Value();
                  CORBA::Object_var aSubObject = SObjectToObject( mySObject );
                  if ( !CORBA::is_nil( aSubObject ) ) {
                    SMESH_GroupBase_i* myGroupImpl =
                      dynamic_cast<SMESH_GroupBase_i*>( GetServant( aSubObject ).in() );
                    if ( !myGroupImpl )
                      continue;
                    SMESHDS_GroupBase* aGrpBaseDS = myGroupImpl->GetGroupDS();
                    if ( !aGrpBaseDS )
                      continue;

                    CORBA::String_var objStr = GetORB()->object_to_string( aSubObject );
                    int anId = myStudyContext->findId( string( objStr.in() ) );

                    // For each group, create a dataset named "Group <group_persistent_id>"
                    // and store the group's user name into it
                    const char* grpName = aGrpBaseDS->GetStoreName();
                    char* aUserName = myGroupImpl->GetName();
                    aSize[ 0 ] = strlen( aUserName ) + 1;

                    aDataset = new HDFdataset( grpName, aGroup, HDF_STRING, aSize, 1 );
                    aDataset->CreateOnDisk();
                    aDataset->WriteOnDisk( aUserName );
                    aDataset->CloseOnDisk();

                    // ouv : NPAL12872
                    // For each group, create a dataset named "Group <group_persistent_id> Color"
                    // and store the group's color into it
                    char grpColorName[ 30 ];
                    sprintf( grpColorName, "ColorGroup %d", anId );
                    SALOMEDS::Color aColor = myGroupImpl->GetColor();
                    double anRGB[3];
                    anRGB[ 0 ] = aColor.R;
                    anRGB[ 1 ] = aColor.G;
                    anRGB[ 2 ] = aColor.B;
                    aSize[ 0 ] = 3;
                    aDataset = new HDFdataset( grpColorName, aGroup, HDF_FLOAT64, aSize, 1 );
                    aDataset->CreateOnDisk();
                    aDataset->WriteOnDisk( anRGB );
                    aDataset->CloseOnDisk();

                    // Pass SMESHDS_Group to MED writer
                    SMESHDS_Group* aGrpDS = dynamic_cast<SMESHDS_Group*>( aGrpBaseDS );
                    if ( aGrpDS )
                      myWriter.AddGroup( aGrpDS );

                    // write reference on a shape if exists
                    SMESHDS_GroupOnGeom* aGeomGrp =
                      dynamic_cast<SMESHDS_GroupOnGeom*>( aGrpBaseDS );
                    if ( aGeomGrp ) {
                      SALOMEDS::SObject_var mySubRef, myShape;
                      if (mySObject->FindSubObject( GetRefOnShapeTag(), mySubRef ) &&
                          mySubRef->ReferencedObject( myShape ) &&
                          !CORBA::is_nil( myShape->GetObject() ))
                      {
                        string myRefOnObject = myShape->GetID();
                        if ( myRefOnObject.length() > 0 ) {
                          char aRefName[ 30 ];
                          sprintf( aRefName, "Ref on shape %d", anId);
                          aSize[ 0 ] = myRefOnObject.length() + 1;
                          aDataset = new HDFdataset(aRefName, aGroup, HDF_STRING, aSize, 1);
                          aDataset->CreateOnDisk();
                          aDataset->WriteOnDisk( ( char* )( myRefOnObject.c_str() ) );
                          aDataset->CloseOnDisk();
                        }
                      }
                      else // shape ref is invalid:
                      {
                        // save a group on geometry as ordinary group
                        myWriter.AddGroup( aGeomGrp );
                      }
                    }
                    else if ( SMESH_GroupOnFilter_i* aFilterGrp_i = 
                              dynamic_cast<SMESH_GroupOnFilter_i*>( myGroupImpl ))
                    {
                      std::string str = aFilterGrp_i->FilterToString();
                      std::string hdfGrpName = "Filter " + SMESH_Comment(anId);
                      aSize[ 0 ] = str.length() + 1;
                      aDataset = new HDFdataset( hdfGrpName.c_str(), aGroup, HDF_STRING, aSize, 1);
                      aDataset->CreateOnDisk();
                      aDataset->WriteOnDisk( ( char* )( str.c_str() ) );
                      aDataset->CloseOnDisk();
                    }
                  }
                }
                aGroup->CloseOnDisk();
              }
            } // loop on groups

            if ( strcmp( strHasData.c_str(), "1" ) == 0 )
            {
              // Flush current mesh information into MED file
              myWriter.Perform();

              // save info on nb of elements
              SMESH_PreMeshInfo::SaveToFile( myImpl, id, aFile );

              // maybe a shape was deleted in the study
              if ( !shapeRefFound && !mySMESHDSMesh->ShapeToMesh().IsNull() && hasShape) {
                TopoDS_Shape nullShape;
                myLocMesh.ShapeToMesh( nullShape ); // remove shape referring data
              }

              if ( !mySMESHDSMesh->SubMeshes().empty() )
              {
                // Store submeshes
                // ----------------
                aGroup = new HDFgroup( "Submeshes", aTopGroup );
                aGroup->CreateOnDisk();

                // each element belongs to one or none submesh,
                // so for each node/element, we store a submesh ID

                // Make maps of submesh IDs of elements sorted by element IDs
                typedef int TElemID;
                typedef int TSubMID;
                map< TElemID, TSubMID > eId2smId, nId2smId;
                map< TElemID, TSubMID >::iterator hint; // insertion to map is done before hint
                const map<int,SMESHDS_SubMesh*>& aSubMeshes = mySMESHDSMesh->SubMeshes();
                map<int,SMESHDS_SubMesh*>::const_iterator itSubM ( aSubMeshes.begin() );
                SMDS_NodeIteratorPtr itNode;
                SMDS_ElemIteratorPtr itElem;
                for ( itSubM = aSubMeshes.begin(); itSubM != aSubMeshes.end() ; itSubM++ )
                {
                  TSubMID          aSubMeID = itSubM->first;
                  SMESHDS_SubMesh* aSubMesh = itSubM->second;
                  if ( aSubMesh->IsComplexSubmesh() )
                    continue; // submesh containing other submeshs
                  // nodes
                  hint = nId2smId.begin(); // optimize insertion basing on increasing order of elem Ids in submesh
                  for ( itNode = aSubMesh->GetNodes(); itNode->more(); ++hint)
                    hint = nId2smId.insert( hint, make_pair( itNode->next()->GetID(), aSubMeID ));
                  // elements
                  hint = eId2smId.begin();
                  for ( itElem = aSubMesh->GetElements(); itElem->more(); ++hint)
                    hint = eId2smId.insert( hint, make_pair( itElem->next()->GetID(), aSubMeID ));
                }

                // Care of elements that are not on submeshes
                if ( mySMESHDSMesh->NbNodes() != nId2smId.size() ) {
                  for ( itNode = mySMESHDSMesh->nodesIterator(); itNode->more(); )
                    /*  --- stl_map.h says : */
                    /*  A %map relies on unique keys and thus a %pair is only inserted if its */
                    /*  first element (the key) is not already present in the %map.           */
                    nId2smId.insert( make_pair( itNode->next()->GetID(), 0 ));
                }
                int nbElems = mySMESHDSMesh->NbEdges() + mySMESHDSMesh->NbFaces() + mySMESHDSMesh->NbVolumes();
                if ( nbElems != eId2smId.size() ) {
                  for ( itElem = mySMESHDSMesh->elementsIterator(); itElem->more(); )
                    eId2smId.insert( make_pair( itElem->next()->GetID(), 0 ));
                }

                // Store submesh IDs
                for ( int isNode = 0; isNode < 2; ++isNode )
                {
                  map< TElemID, TSubMID >& id2smId = isNode ? nId2smId : eId2smId;
                  if ( id2smId.empty() ) continue;
                  map< TElemID, TSubMID >::const_iterator id_smId = id2smId.begin();
                  // make and fill array of submesh IDs
                  int* smIDs = new int [ id2smId.size() ];
                  for ( int i = 0; id_smId != id2smId.end(); ++id_smId, ++i )
                    smIDs[ i ] = id_smId->second;
                  // write HDF group
                  aSize[ 0 ] = id2smId.size();
                  string aDSName( isNode ? "Node Submeshes" : "Element Submeshes");
                  aDataset = new HDFdataset( (char*)aDSName.c_str(), aGroup, HDF_INT32, aSize, 1 );
                  aDataset->CreateOnDisk();
                  aDataset->WriteOnDisk( smIDs );
                  aDataset->CloseOnDisk();
                  //
                  delete[] smIDs;
                }

                aGroup->CloseOnDisk();

                // Store node positions on sub-shapes (SMDS_Position):
                // ----------------------------------------------------

                aGroup = new HDFgroup( "Node Positions", aTopGroup );
                aGroup->CreateOnDisk();

                // in aGroup, create 5 datasets to contain:
                // "Nodes on Edges" - ID of node on edge
                // "Edge positions" - U parameter on node on edge
                // "Nodes on Faces" - ID of node on face
                // "Face U positions" - U parameter of node on face
                // "Face V positions" - V parameter of node on face

                // Find out nb of nodes on edges and faces
                // Collect corresponing sub-meshes
                int nbEdgeNodes = 0, nbFaceNodes = 0;
                list<SMESHDS_SubMesh*> aEdgeSM, aFaceSM;
                // loop on SMESHDS_SubMesh'es
                for ( itSubM = aSubMeshes.begin(); itSubM != aSubMeshes.end() ; itSubM++ )
                {
                  SMESHDS_SubMesh* aSubMesh = (*itSubM).second;
                  if ( aSubMesh->IsComplexSubmesh() )
                    continue; // submesh containing other submeshs
                  int nbNodes = aSubMesh->NbNodes();
                  if ( nbNodes == 0 ) continue;

                  int aShapeID = (*itSubM).first;
                  if ( aShapeID < 1 || aShapeID > mySMESHDSMesh->MaxShapeIndex() )
                    continue;
                  int aShapeType = mySMESHDSMesh->IndexToShape( aShapeID ).ShapeType();
                  // write only SMDS_FacePosition and SMDS_EdgePosition
                  switch ( aShapeType ) {
                  case TopAbs_FACE:
                    nbFaceNodes += nbNodes;
                    aFaceSM.push_back( aSubMesh );
                    break;
                  case TopAbs_EDGE:
                    nbEdgeNodes += nbNodes;
                    aEdgeSM.push_back( aSubMesh );
                    break;
                  default:
                    continue;
                  }
                }
                // Treat positions on edges or faces
                for ( int onFace = 0; onFace < 2; onFace++ )
                {
                  // Create arrays to store in datasets
                  int iNode = 0, nbNodes = ( onFace ? nbFaceNodes : nbEdgeNodes );
                  if (!nbNodes) continue;
                  int* aNodeIDs = new int [ nbNodes ];
                  double* aUPos = new double [ nbNodes ];
                  double* aVPos = ( onFace ? new double[ nbNodes ] : 0 );

                  // Fill arrays
                  // loop on sub-meshes
                  list<SMESHDS_SubMesh*> * pListSM = ( onFace ? &aFaceSM : &aEdgeSM );
                  list<SMESHDS_SubMesh*>::iterator itSM = pListSM->begin();
                  for ( ; itSM != pListSM->end(); itSM++ )
                  {
                    SMESHDS_SubMesh* aSubMesh = (*itSM);

                    SMDS_NodeIteratorPtr itNode = aSubMesh->GetNodes();
                    // loop on nodes in aSubMesh
                    while ( itNode->more() )
                    {
                      //node ID
                      const SMDS_MeshNode* node = itNode->next();
                      aNodeIDs [ iNode ] = node->GetID();

                      // Position
                      const SMDS_PositionPtr pos = node->GetPosition();
                      if ( onFace ) { // on FACE
                        const SMDS_FacePosition* fPos =
                          dynamic_cast<const SMDS_FacePosition*>( pos );
                        if ( fPos ) {
                          aUPos[ iNode ] = fPos->GetUParameter();
                          aVPos[ iNode ] = fPos->GetVParameter();
                          iNode++;
                        }
                        else
                          nbNodes--;
                      }
                      else { // on EDGE
                        const SMDS_EdgePosition* ePos =
                          dynamic_cast<const SMDS_EdgePosition*>( pos );
                        if ( ePos ) {
                          aUPos[ iNode ] = ePos->GetUParameter();
                          iNode++;
                        }
                        else
                          nbNodes--;
                      }
                    } // loop on nodes in aSubMesh
                  } // loop on sub-meshes

                  // Write datasets
                  if ( nbNodes )
                  {
                    aSize[ 0 ] = nbNodes;
                    // IDS
                    string aDSName( onFace ? "Nodes on Faces" : "Nodes on Edges");
                    aDataset = new HDFdataset( (char*)aDSName.c_str(), aGroup, HDF_INT32, aSize, 1 );
                    aDataset->CreateOnDisk();
                    aDataset->WriteOnDisk( aNodeIDs );
                    aDataset->CloseOnDisk();

                    // U Positions
                    aDSName = ( onFace ? "Face U positions" : "Edge positions");
                    aDataset = new HDFdataset( (char*)aDSName.c_str(), aGroup, HDF_FLOAT64, aSize, 1);
                    aDataset->CreateOnDisk();
                    aDataset->WriteOnDisk( aUPos );
                    aDataset->CloseOnDisk();
                    // V Positions
                    if ( onFace ) {
                      aDataset = new HDFdataset( "Face V positions", aGroup, HDF_FLOAT64, aSize, 1);
                      aDataset->CreateOnDisk();
                      aDataset->WriteOnDisk( aVPos );
                      aDataset->CloseOnDisk();
                    }
                  }
                  delete [] aNodeIDs;
                  delete [] aUPos;
                  if ( aVPos ) delete [] aVPos;

                } // treat positions on edges or faces

                // close "Node Positions" group
                aGroup->CloseOnDisk();

              } // if ( there are submeshes in SMESHDS_Mesh )
            } // if ( hasData )

            // close mesh HDF group
            aTopGroup->CloseOnDisk();
          }
        }
      }
    }
  }

  // close HDF file
  aFile->CloseOnDisk();
  delete aFile;

  // Convert temporary files to stream
  aStreamFile = SALOMEDS_Tool::PutFilesToStream( tmpDir.ToCString(), aFileSeq.in(), isMultiFile );

  // Remove temporary files and directory
  if ( !isMultiFile )
    SALOMEDS_Tool::RemoveTemporaryFiles( tmpDir.ToCString(), aFileSeq.in(), true );

  INFOS( "SMESH_Gen_i::Save() completed" );
  return aStreamFile._retn();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::SaveASCII
 *
 *  Save SMESH module's data in ASCII format
 */
//=============================================================================

SALOMEDS::TMPFile* SMESH_Gen_i::SaveASCII( SALOMEDS::SComponent_ptr theComponent,
                                           const char*              theURL,
                                           bool                     isMultiFile ) {
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::SaveASCII" );
  SALOMEDS::TMPFile_var aStreamFile = Save( theComponent, theURL, isMultiFile );
  return aStreamFile._retn();

  //after usual saving needs to encipher binary to text string
  //Any binary symbol will be represent as "|xx" () hexadecimal format number
  int size = aStreamFile.in().length();
  _CORBA_Octet* buffer = new _CORBA_Octet[size*3+1];
  for ( int i = 0; i < size; i++ )
    sprintf( (char*)&(buffer[i*3]), "|%02x", aStreamFile[i] );

  buffer[size * 3] = '\0';

  SALOMEDS::TMPFile_var anAsciiStreamFile = new SALOMEDS::TMPFile(size*3, size*3, buffer, 1);

  return anAsciiStreamFile._retn();
}

//=============================================================================
/*!
 *  SMESH_Gen_i::loadGeomData
 *
 *  Load GEOM module data
 */
//=============================================================================

void SMESH_Gen_i::loadGeomData( SALOMEDS::SComponent_ptr theCompRoot )
{
  if ( theCompRoot->_is_nil() )
    return;

  SALOMEDS::Study_var aStudy = SALOMEDS::Study::_narrow( theCompRoot->GetStudy() );
  if ( aStudy->_is_nil() )
    return;

  SALOMEDS::StudyBuilder_var aStudyBuilder = aStudy->NewBuilder();
  aStudyBuilder->LoadWith( theCompRoot, GetGeomEngine() );
}

//=============================================================================
/*!
 *  SMESH_Gen_i::Load
 *
 *  Load SMESH module's data
 */
//=============================================================================

bool SMESH_Gen_i::Load( SALOMEDS::SComponent_ptr theComponent,
                        const SALOMEDS::TMPFile& theStream,
                        const char*              theURL,
                        bool                     isMultiFile )
{
  INFOS( "SMESH_Gen_i::Load" );

  if ( myCurrentStudy->_is_nil() ||
       theComponent->GetStudy()->StudyId() != myCurrentStudy->StudyId() )
    SetCurrentStudy( theComponent->GetStudy() );

  /*  if( !theComponent->_is_nil() )
      {
      //SALOMEDS::Study_var aStudy = SALOMEDS::Study::_narrow( theComponent->GetStudy() );
      if( !myCurrentStudy->FindComponent( "GEOM" )->_is_nil() )
      loadGeomData( myCurrentStudy->FindComponent( "GEOM" ) );
      }*/

  StudyContext* myStudyContext = GetCurrentStudyContext();

  // Get temporary files location
  TCollection_AsciiString tmpDir =
    isMultiFile ? TCollection_AsciiString( ( char* )theURL ) : ( char* )SALOMEDS_Tool::GetTmpDir().c_str();

    INFOS( "THE URL++++++++++++++" )
    INFOS( theURL );
    INFOS( "THE TMP PATH+++++++++" );
    INFOS( tmpDir );

  // Convert the stream into sequence of files to process
  SALOMEDS::ListOfFileNames_var aFileSeq = SALOMEDS_Tool::PutStreamToFiles( theStream,
                                                                            tmpDir.ToCString(),
                                                                            isMultiFile );
  TCollection_AsciiString aStudyName( "" );
  if ( isMultiFile )
    aStudyName = ( (char*)SALOMEDS_Tool::GetNameFromPath( myCurrentStudy->URL() ).c_str() );

  // Set names of temporary files
  TCollection_AsciiString filename = tmpDir + aStudyName + TCollection_AsciiString( "_SMESH.hdf" );
  TCollection_AsciiString meshfile = tmpDir + aStudyName + TCollection_AsciiString( "_SMESH_Mesh.med" );

  int size;
  HDFfile*    aFile;
  HDFdataset* aDataset;
  HDFgroup*   aTopGroup;
  HDFgroup*   aGroup;
  HDFgroup*   aSubGroup;
  HDFgroup*   aSubSubGroup;

  // Read data
  // ---> open HDF file
  aFile = new HDFfile( (char*) filename.ToCString() );
  try {
    aFile->OpenOnDisk( HDF_RDONLY );
  }
  catch ( HDFexception ) {
    INFOS( "Load(): " << filename << " not found!" );
    return false;
  }

  TPythonDump pd; // prevent dump during loading

  // DriverMED_R_SMESHDS_Mesh myReader;
  // myReader.SetFile( meshfile.ToCString() );

  // For PAL13473 ("Repetitive mesh") implementation.
  // New dependencies between SMESH objects are established:
  // now hypotheses can refer to meshes, shapes and other hypotheses.
  // To keep data consistent, the following order of data restoration
  // imposed:
  // 1. Create hypotheses
  // 2. Create all meshes
  // 3. Load hypotheses' data
  // 4. All the rest

  list< pair< SMESH_Hypothesis_i*, string > >    hypDataList;
  list< pair< SMESH_Mesh_i*,       HDFgroup* > > meshGroupList;

  // get total number of top-level groups
  int aNbGroups = aFile->nInternalObjects();
  if ( aNbGroups > 0 ) {
    // --> in first turn we should read&create hypotheses
    if ( aFile->ExistInternalObject( "Hypotheses" ) ) {
      // open hypotheses root HDF group
      aTopGroup = new HDFgroup( "Hypotheses", aFile );
      aTopGroup->OpenOnDisk();

      // get number of hypotheses
      int aNbObjects = aTopGroup->nInternalObjects();
      for ( int j = 0; j < aNbObjects; j++ ) {
        // try to identify hypothesis
        char hypGrpName[ HDF_NAME_MAX_LEN+1 ];
        aTopGroup->InternalObjectIndentify( j, hypGrpName );

        if ( string( hypGrpName ).substr( 0, 10 ) == string( "Hypothesis" ) ) {
          // open hypothesis group
          aGroup = new HDFgroup( hypGrpName, aTopGroup );
          aGroup->OpenOnDisk();

          // --> get hypothesis id
          int    id = atoi( string( hypGrpName ).substr( 10 ).c_str() );
          string hypname;
          string libname;
          string hypdata;

          // get number of datasets
          int aNbSubObjects = aGroup->nInternalObjects();
          for ( int k = 0; k < aNbSubObjects; k++ ) {
            // identify dataset
            char name_of_subgroup[ HDF_NAME_MAX_LEN+1 ];
            aGroup->InternalObjectIndentify( k, name_of_subgroup );
            // --> get hypothesis name
            if ( strcmp( name_of_subgroup, "Name"  ) == 0 ) {
              aDataset = new HDFdataset( name_of_subgroup, aGroup );
              aDataset->OpenOnDisk();
              size = aDataset->GetSize();
              char* hypname_str = new char[ size ];
              aDataset->ReadFromDisk( hypname_str );
              hypname = string( hypname_str );
              delete [] hypname_str;
              aDataset->CloseOnDisk();
            }
            // --> get hypothesis plugin library name
            if ( strcmp( name_of_subgroup, "LibName"  ) == 0 ) {
              aDataset = new HDFdataset( name_of_subgroup, aGroup );
              aDataset->OpenOnDisk();
              size = aDataset->GetSize();
              char* libname_str = new char[ size ];
              aDataset->ReadFromDisk( libname_str );
              if(MYDEBUG) SCRUTE( libname_str );
              libname = string( libname_str );
              delete [] libname_str;
              aDataset->CloseOnDisk();
            }
            // --> get hypothesis data
            if ( strcmp( name_of_subgroup, "Data"  ) == 0 ) {
              aDataset = new HDFdataset( name_of_subgroup, aGroup );
              aDataset->OpenOnDisk();
              size = aDataset->GetSize();
              char* hypdata_str = new char[ size ];
              aDataset->ReadFromDisk( hypdata_str );
              hypdata = string( hypdata_str );
              delete [] hypdata_str;
              aDataset->CloseOnDisk();
            }
          }
          // close hypothesis HDF group
          aGroup->CloseOnDisk();

          // --> restore hypothesis from data
          if ( id > 0 && !hypname.empty()/* && !hypdata.empty()*/ ) { // VSR : persistent data can be empty
            if(MYDEBUG) MESSAGE("VSR - load hypothesis : id = " << id <<
                                ", name = " << hypname.c_str() << ", persistent string = " << hypdata.c_str());
            SMESH::SMESH_Hypothesis_var myHyp;

            try { // protect persistence mechanism against exceptions
              myHyp = this->createHypothesis( hypname.c_str(), libname.c_str() );
            }
            catch (...) {
              INFOS( "Exception during hypothesis creation" );
            }

            SMESH_Hypothesis_i* myImpl = dynamic_cast<SMESH_Hypothesis_i*>( GetServant( myHyp ).in() );
            if ( myImpl ) {
              // myImpl->LoadFrom( hypdata.c_str() );
              hypDataList.push_back( make_pair( myImpl, hypdata ));
              string iorString = GetORB()->object_to_string( myHyp );
              int newId = myStudyContext->findId( iorString );
              myStudyContext->mapOldToNew( id, newId );
            }
            else
              if(MYDEBUG) MESSAGE( "VSR - SMESH_Gen::Load - can't get servant" );
          }
        }
      }
      // close hypotheses root HDF group
      aTopGroup->CloseOnDisk();
      aTopGroup = 0;
    }

    // --> then we should read&create algorithms
    if ( aFile->ExistInternalObject( "Algorithms" ) ) {
      // open algorithms root HDF group
      aTopGroup = new HDFgroup( "Algorithms", aFile );
      aTopGroup->OpenOnDisk();

      // get number of algorithms
      int aNbObjects = aTopGroup->nInternalObjects();
      for ( int j = 0; j < aNbObjects; j++ ) {
        // try to identify algorithm
        char hypGrpName[ HDF_NAME_MAX_LEN+1 ];
        aTopGroup->InternalObjectIndentify( j, hypGrpName );

        if ( string( hypGrpName ).substr( 0, 9 ) == string( "Algorithm" ) ) {
          // open algorithm group
          aGroup = new HDFgroup( hypGrpName, aTopGroup );
          aGroup->OpenOnDisk();

          // --> get algorithm id
          int    id = atoi( string( hypGrpName ).substr( 9 ).c_str() );
          string hypname;
          string libname;
          string hypdata;

          // get number of datasets
          int aNbSubObjects = aGroup->nInternalObjects();
          for ( int k = 0; k < aNbSubObjects; k++ ) {
            // identify dataset
            char name_of_subgroup[ HDF_NAME_MAX_LEN+1 ];
            aGroup->InternalObjectIndentify( k, name_of_subgroup );
            // --> get algorithm name
            if ( strcmp( name_of_subgroup, "Name"  ) == 0 ) {
              aDataset = new HDFdataset( name_of_subgroup, aGroup );
              aDataset->OpenOnDisk();
              size = aDataset->GetSize();
              char* hypname_str = new char[ size ];
              aDataset->ReadFromDisk( hypname_str );
              hypname = string( hypname_str );
              delete [] hypname_str;
              aDataset->CloseOnDisk();
            }
            // --> get algorithm plugin library name
            if ( strcmp( name_of_subgroup, "LibName"  ) == 0 ) {
              aDataset = new HDFdataset( name_of_subgroup, aGroup );
              aDataset->OpenOnDisk();
              size = aDataset->GetSize();
              char* libname_str = new char[ size ];
              aDataset->ReadFromDisk( libname_str );
              if(MYDEBUG) SCRUTE( libname_str );
              libname = string( libname_str );
              delete [] libname_str;
              aDataset->CloseOnDisk();
            }
            // --> get algorithm data
            if ( strcmp( name_of_subgroup, "Data"  ) == 0 ) {
              aDataset = new HDFdataset( name_of_subgroup, aGroup );
              aDataset->OpenOnDisk();
              size = aDataset->GetSize();
              char* hypdata_str = new char[ size ];
              aDataset->ReadFromDisk( hypdata_str );
              if(MYDEBUG) SCRUTE( hypdata_str );
              hypdata = string( hypdata_str );
              delete [] hypdata_str;
              aDataset->CloseOnDisk();
            }
          }
          // close algorithm HDF group
          aGroup->CloseOnDisk();

          // --> restore algorithm from data
          if ( id > 0 && !hypname.empty()/* && !hypdata.empty()*/ ) { // VSR : persistent data can be empty
            if(MYDEBUG) MESSAGE("VSR - load algo : id = " << id <<
                                ", name = " << hypname.c_str() << ", persistent string = " << hypdata.c_str());
            SMESH::SMESH_Hypothesis_var myHyp;

            try { // protect persistence mechanism against exceptions
              myHyp = this->createHypothesis( hypname.c_str(), libname.c_str() );
            }
            catch (...) {
              INFOS( "Exception during hypothesis creation" );
            }

            SMESH_Hypothesis_i* myImpl = dynamic_cast<SMESH_Hypothesis_i*>( GetServant( myHyp ).in() );
            if ( myImpl ) {
              //myImpl->LoadFrom( hypdata.c_str() );
              hypDataList.push_back( make_pair( myImpl, hypdata ));
              string iorString = GetORB()->object_to_string( myHyp );
              int newId = myStudyContext->findId( iorString );
              myStudyContext->mapOldToNew( id, newId );
            }
            else
              if(MYDEBUG) MESSAGE( "VSR - SMESH_Gen::Load - can't get servant" );
          }
        }
      }
      // close algorithms root HDF group
      aTopGroup->CloseOnDisk();
      aTopGroup = 0;
    }

    // --> the rest groups should be meshes
    for ( int i = 0; i < aNbGroups; i++ ) {
      // identify next group
      char meshName[ HDF_NAME_MAX_LEN+1 ];
      aFile->InternalObjectIndentify( i, meshName );

      if ( string( meshName ).substr( 0, 4 ) == string( "Mesh" ) ) {
        // --> get mesh id
        int id = atoi( string( meshName ).substr( 4 ).c_str() );
        if ( id <= 0 )
          continue;

        // open mesh HDF group
        aTopGroup = new HDFgroup( meshName, aFile );
        aTopGroup->OpenOnDisk();

        // get number of child HDF objects
        int aNbObjects = aTopGroup->nInternalObjects();
        if ( aNbObjects > 0 ) {
          // create mesh
          if(MYDEBUG) MESSAGE( "VSR - load mesh : id = " << id );
          SMESH::SMESH_Mesh_var myNewMesh = this->createMesh();
          SMESH_Mesh_i* myNewMeshImpl = dynamic_cast<SMESH_Mesh_i*>( GetServant( myNewMesh ).in() );
          if ( !myNewMeshImpl )
            continue;
          meshGroupList.push_back( make_pair( myNewMeshImpl, aTopGroup ));

          string iorString = GetORB()->object_to_string( myNewMesh );
          int newId = myStudyContext->findId( iorString );
          myStudyContext->mapOldToNew( id, newId );

          // ouv : NPAL12872
          // try to read and set auto color flag
          char aMeshAutoColorName[ 30 ];
          sprintf( aMeshAutoColorName, "AutoColorMesh %d", id);
          if( aTopGroup->ExistInternalObject( aMeshAutoColorName ) )
          {
            aDataset = new HDFdataset( aMeshAutoColorName, aTopGroup );
            aDataset->OpenOnDisk();
            size = aDataset->GetSize();
            int* anAutoColor = new int[ size ];
            aDataset->ReadFromDisk( anAutoColor );
            aDataset->CloseOnDisk();
            myNewMeshImpl->GetImpl().SetAutoColor( (bool)anAutoColor[0] );
          }

          // try to read and set reference to shape
          GEOM::GEOM_Object_var aShapeObject;
          if ( aTopGroup->ExistInternalObject( "Ref on shape" ) ) {
            // load mesh "Ref on shape" - it's an entry to SObject
            aDataset = new HDFdataset( "Ref on shape", aTopGroup );
            aDataset->OpenOnDisk();
            size = aDataset->GetSize();
            char* refFromFile = new char[ size ];
            aDataset->ReadFromDisk( refFromFile );
            aDataset->CloseOnDisk();
            if ( strlen( refFromFile ) > 0 ) {
              SALOMEDS::SObject_var shapeSO = myCurrentStudy->FindObjectID( refFromFile );

              // Make sure GEOM data are loaded first
              //loadGeomData( shapeSO->GetFatherComponent() );

              CORBA::Object_var shapeObject = SObjectToObject( shapeSO );
              if ( !CORBA::is_nil( shapeObject ) ) {
                aShapeObject = GEOM::GEOM_Object::_narrow( shapeObject );
                if ( !aShapeObject->_is_nil() )
                  myNewMeshImpl->SetShape( aShapeObject );
              }
            }
          }

          // issue 0020693. Restore _isModified flag
          if( aTopGroup->ExistInternalObject( "_isModified" ) )
          {
            aDataset = new HDFdataset( "_isModified", aTopGroup );
            aDataset->OpenOnDisk();
            size = aDataset->GetSize();
            int* isModified = new int[ size ];
            aDataset->ReadFromDisk( isModified );
            aDataset->CloseOnDisk();
            myNewMeshImpl->GetImpl().SetIsModified( bool(*isModified));
          }

          // issue 20918. Restore Persistent Id of SMESHDS_Mesh
          if( aTopGroup->ExistInternalObject( "meshPersistentId" ) )
          {
            aDataset = new HDFdataset( "meshPersistentId", aTopGroup );
            aDataset->OpenOnDisk();
            size = aDataset->GetSize();
            int* meshPersistentId = new int[ size ];
            aDataset->ReadFromDisk( meshPersistentId );
            aDataset->CloseOnDisk();
            myNewMeshImpl->GetImpl().GetMeshDS()->SetPersistentId( *meshPersistentId );
          }
        }
      }
    } // reading MESHes

    // As all object that can be referred by hypothesis are created,
    // we can restore hypothesis data

    list< pair< SMESH_Hypothesis_i*, string > >::iterator hyp_data;
    for ( hyp_data = hypDataList.begin(); hyp_data != hypDataList.end(); ++hyp_data )
    {
      SMESH_Hypothesis_i* hyp  = hyp_data->first;
      string &            data = hyp_data->second;
      hyp->LoadFrom( data.c_str() );
    }

    // Restore the rest mesh data

    list< pair< SMESH_Mesh_i*, HDFgroup* > >::iterator meshi_group;
    for ( meshi_group = meshGroupList.begin(); meshi_group != meshGroupList.end(); ++meshi_group )
    {
      aTopGroup                   = meshi_group->second;
      SMESH_Mesh_i* myNewMeshImpl = meshi_group->first;
      //::SMESH_Mesh& myLocMesh     = myNewMeshImpl->GetImpl();
      //SMESHDS_Mesh* mySMESHDSMesh = myLocMesh.GetMeshDS();

      GEOM::GEOM_Object_var aShapeObject = myNewMeshImpl->GetShapeToMesh();
      bool hasData = false;

      // get mesh old id
      string iorString = GetORB()->object_to_string( myNewMeshImpl->_this() );
      int newId = myStudyContext->findId( iorString );
      int id = myStudyContext->getOldId( newId );

      // try to find mesh data dataset
      if ( aTopGroup->ExistInternalObject( "Has data" ) ) {
        // load mesh "has data" flag
        aDataset = new HDFdataset( "Has data", aTopGroup );
        aDataset->OpenOnDisk();
        size = aDataset->GetSize();
        char* strHasData = new char[ size ];
        aDataset->ReadFromDisk( strHasData );
        aDataset->CloseOnDisk();
        if ( strcmp( strHasData, "1") == 0 ) {
          // read mesh data from MED file
          // myReader.SetMesh( mySMESHDSMesh );
          // myReader.SetMeshId( id );
          // myReader.Perform();
          hasData = true;
        }
      }

      // Try to get applied ALGORITHMS (mesh is not cleared by algo addition because
      // nodes and elements are not yet put into sub-meshes)
      if ( aTopGroup->ExistInternalObject( "Applied Algorithms" ) ) {
        aGroup = new HDFgroup( "Applied Algorithms", aTopGroup );
        aGroup->OpenOnDisk();
        // get number of applied algorithms
        int aNbSubObjects = aGroup->nInternalObjects();
        if(MYDEBUG) MESSAGE( "VSR - number of applied algos " << aNbSubObjects );
        for ( int j = 0; j < aNbSubObjects; j++ ) {
          char name_dataset[ HDF_NAME_MAX_LEN+1 ];
          aGroup->InternalObjectIndentify( j, name_dataset );
          // check if it is an algorithm
          if ( string( name_dataset ).substr( 0, 4 ) == string( "Algo" ) ) {
            aDataset = new HDFdataset( name_dataset, aGroup );
            aDataset->OpenOnDisk();
            size = aDataset->GetSize();
            char* refFromFile = new char[ size ];
            aDataset->ReadFromDisk( refFromFile );
            aDataset->CloseOnDisk();
            // san - it is impossible to recover applied algorithms using their entries within Load() method
            //SALOMEDS::SObject_var hypSO = myCurrentStudy->FindObjectID( refFromFile );
            //CORBA::Object_var hypObject = SObjectToObject( hypSO );
            int id = atoi( refFromFile );
            string anIOR = myStudyContext->getIORbyOldId( id );
            if ( !anIOR.empty() ) {
              CORBA::Object_var hypObject = GetORB()->string_to_object( anIOR.c_str() );
              if ( !CORBA::is_nil( hypObject ) ) {
                SMESH::SMESH_Hypothesis_var anHyp = SMESH::SMESH_Hypothesis::_narrow( hypObject );
                if ( !anHyp->_is_nil() && (!aShapeObject->_is_nil()
                                           || !myNewMeshImpl->HasShapeToMesh()) )
                  myNewMeshImpl->addHypothesis( aShapeObject, anHyp );
              }
            }
          }
        }
        aGroup->CloseOnDisk();
      }

      // try to get applied hypotheses
      if ( aTopGroup->ExistInternalObject( "Applied Hypotheses" ) ) {
        aGroup = new HDFgroup( "Applied Hypotheses", aTopGroup );
        aGroup->OpenOnDisk();
        // get number of applied hypotheses
        int aNbSubObjects = aGroup->nInternalObjects();
        for ( int j = 0; j < aNbSubObjects; j++ ) {
          char name_dataset[ HDF_NAME_MAX_LEN+1 ];
          aGroup->InternalObjectIndentify( j, name_dataset );
          // check if it is a hypothesis
          if ( string( name_dataset ).substr( 0, 3 ) == string( "Hyp" ) ) {
            aDataset = new HDFdataset( name_dataset, aGroup );
            aDataset->OpenOnDisk();
            size = aDataset->GetSize();
            char* refFromFile = new char[ size ];
            aDataset->ReadFromDisk( refFromFile );
            aDataset->CloseOnDisk();
            // san - it is impossible to recover applied hypotheses using their entries within Load() method
            //SALOMEDS::SObject_var hypSO = myCurrentStudy->FindObjectID( refFromFile );
            //CORBA::Object_var hypObject = SObjectToObject( hypSO );
            int id = atoi( refFromFile );
            string anIOR = myStudyContext->getIORbyOldId( id );
            if ( !anIOR.empty() ) {
              CORBA::Object_var hypObject = GetORB()->string_to_object( anIOR.c_str() );
              if ( !CORBA::is_nil( hypObject ) ) {
                SMESH::SMESH_Hypothesis_var anHyp = SMESH::SMESH_Hypothesis::_narrow( hypObject );
                if ( !anHyp->_is_nil() && (!aShapeObject->_is_nil()
                                           || !myNewMeshImpl->HasShapeToMesh()) )
                  myNewMeshImpl->addHypothesis( aShapeObject, anHyp );
              }
            }
          }
        }
        aGroup->CloseOnDisk();
      }

      // --> try to find SUB-MESHES containers for each type of submesh
      for ( int j = GetSubMeshOnVertexTag(); j <= GetSubMeshOnCompoundTag(); j++ ) {
        char name_meshgroup[ 30 ];
        if ( j == GetSubMeshOnVertexTag() )
          strcpy( name_meshgroup, "SubMeshes On Vertex" );
        else if ( j == GetSubMeshOnEdgeTag() )
          strcpy( name_meshgroup, "SubMeshes On Edge" );
        else if ( j == GetSubMeshOnWireTag() )
          strcpy( name_meshgroup, "SubMeshes On Wire" );
        else if ( j == GetSubMeshOnFaceTag() )
          strcpy( name_meshgroup, "SubMeshes On Face" );
        else if ( j == GetSubMeshOnShellTag() )
          strcpy( name_meshgroup, "SubMeshes On Shell" );
        else if ( j == GetSubMeshOnSolidTag() )
          strcpy( name_meshgroup, "SubMeshes On Solid" );
        else if ( j == GetSubMeshOnCompoundTag() )
          strcpy( name_meshgroup, "SubMeshes On Compound" );

        // try to get submeshes container HDF group
        if ( aTopGroup->ExistInternalObject( name_meshgroup ) ) {
          // open submeshes containers HDF group
          aGroup = new HDFgroup( name_meshgroup, aTopGroup );
          aGroup->OpenOnDisk();

          // get number of submeshes
          int aNbSubMeshes = aGroup->nInternalObjects();
          for ( int k = 0; k < aNbSubMeshes; k++ ) {
            // identify submesh
            char name_submeshgroup[ HDF_NAME_MAX_LEN+1 ];
            aGroup->InternalObjectIndentify( k, name_submeshgroup );
            if ( string( name_submeshgroup ).substr( 0, 7 ) == string( "SubMesh" )  ) {
              // --> get submesh id
              int subid = atoi( string( name_submeshgroup ).substr( 7 ).c_str() );
              if ( subid <= 0 )
                continue;
              // open submesh HDF group
              aSubGroup = new HDFgroup( name_submeshgroup, aGroup );
              aSubGroup->OpenOnDisk();

              // try to read and set reference to subshape
              GEOM::GEOM_Object_var aSubShapeObject;
              SMESH::SMESH_subMesh_var aSubMesh;

              if ( aSubGroup->ExistInternalObject( "Ref on shape" ) ) {
                // load submesh "Ref on shape" - it's an entry to SObject
                aDataset = new HDFdataset( "Ref on shape", aSubGroup );
                aDataset->OpenOnDisk();
                size = aDataset->GetSize();
                char* refFromFile = new char[ size ];
                aDataset->ReadFromDisk( refFromFile );
                aDataset->CloseOnDisk();
                if ( strlen( refFromFile ) > 0 ) {
                  SALOMEDS::SObject_var subShapeSO = myCurrentStudy->FindObjectID( refFromFile );
                  CORBA::Object_var subShapeObject = SObjectToObject( subShapeSO );
                  if ( !CORBA::is_nil( subShapeObject ) ) {
                    aSubShapeObject = GEOM::GEOM_Object::_narrow( subShapeObject );
                    if ( !aSubShapeObject->_is_nil() )
                      aSubMesh = SMESH::SMESH_subMesh::_duplicate
                        ( myNewMeshImpl->createSubMesh( aSubShapeObject ) );
                    if ( aSubMesh->_is_nil() )
                      continue;
                    string iorSubString = GetORB()->object_to_string( aSubMesh );
                    int newSubId = myStudyContext->findId( iorSubString );
                    myStudyContext->mapOldToNew( subid, newSubId );
                  }
                }
              }

              if ( aSubMesh->_is_nil() )
                continue;

              // try to get applied algorithms
              if ( aSubGroup->ExistInternalObject( "Applied Algorithms" ) ) {
                // open "applied algorithms" HDF group
                aSubSubGroup = new HDFgroup( "Applied Algorithms", aSubGroup );
                aSubSubGroup->OpenOnDisk();
                // get number of applied algorithms
                int aNbSubObjects = aSubSubGroup->nInternalObjects();
                for ( int l = 0; l < aNbSubObjects; l++ ) {
                  char name_dataset[ HDF_NAME_MAX_LEN+1 ];
                  aSubSubGroup->InternalObjectIndentify( l, name_dataset );
                  // check if it is an algorithm
                  if ( string( name_dataset ).substr( 0, 4 ) == string( "Algo" ) ) {
                    aDataset = new HDFdataset( name_dataset, aSubSubGroup );
                    aDataset->OpenOnDisk();
                    size = aDataset->GetSize();
                    char* refFromFile = new char[ size ];
                    aDataset->ReadFromDisk( refFromFile );
                    aDataset->CloseOnDisk();

                    int id = atoi( refFromFile );
                    string anIOR = myStudyContext->getIORbyOldId( id );
                    if ( !anIOR.empty() ) {
                      CORBA::Object_var hypObject = GetORB()->string_to_object( anIOR.c_str() );
                      if ( !CORBA::is_nil( hypObject ) ) {
                        SMESH::SMESH_Hypothesis_var anHyp = SMESH::SMESH_Hypothesis::_narrow( hypObject );
                        if ( !anHyp->_is_nil() && !aShapeObject->_is_nil() )
                          myNewMeshImpl->addHypothesis( aSubShapeObject, anHyp );
                      }
                    }
                  }
                }
                // close "applied algorithms" HDF group
                aSubSubGroup->CloseOnDisk();
              }

              // try to get applied hypotheses
              if ( aSubGroup->ExistInternalObject( "Applied Hypotheses" ) ) {
                // open "applied hypotheses" HDF group
                aSubSubGroup = new HDFgroup( "Applied Hypotheses", aSubGroup );
                aSubSubGroup->OpenOnDisk();
                // get number of applied hypotheses
                int aNbSubObjects = aSubSubGroup->nInternalObjects();
                for ( int l = 0; l < aNbSubObjects; l++ ) {
                  char name_dataset[ HDF_NAME_MAX_LEN+1 ];
                  aSubSubGroup->InternalObjectIndentify( l, name_dataset );
                  // check if it is a hypothesis
                  if ( string( name_dataset ).substr( 0, 3 ) == string( "Hyp" ) ) {
                    aDataset = new HDFdataset( name_dataset, aSubSubGroup );
                    aDataset->OpenOnDisk();
                    size = aDataset->GetSize();
                    char* refFromFile = new char[ size ];
                    aDataset->ReadFromDisk( refFromFile );
                    aDataset->CloseOnDisk();

                    int id = atoi( refFromFile );
                    string anIOR = myStudyContext->getIORbyOldId( id );
                    if ( !anIOR.empty() ) {
                      CORBA::Object_var hypObject = GetORB()->string_to_object( anIOR.c_str() );
                      if ( !CORBA::is_nil( hypObject ) ) {
                        SMESH::SMESH_Hypothesis_var anHyp = SMESH::SMESH_Hypothesis::_narrow( hypObject );
                        if ( !anHyp->_is_nil() && !aShapeObject->_is_nil() )
                          myNewMeshImpl->addHypothesis( aSubShapeObject, anHyp );
                      }
                    }
                  }
                }
                // close "APPLIED HYPOTHESES" hdf group
                aSubSubGroup->CloseOnDisk();
              }

              // close SUB-MESH hdf group
              aSubGroup->CloseOnDisk();
            }
          }
          // close SUB-MESHES containers hdf group
          aGroup->CloseOnDisk();
        }
      }

      // try to get GROUPS
      for ( int ii = GetNodeGroupsTag(); ii <= GetBallElementsGroupsTag(); ii++ ) {
        char name_group[ 30 ];
        if ( ii == GetNodeGroupsTag() )
          strcpy( name_group, "Groups of Nodes" );
        else if ( ii == GetEdgeGroupsTag() )
          strcpy( name_group, "Groups of Edges" );
        else if ( ii == GetFaceGroupsTag() )
          strcpy( name_group, "Groups of Faces" );
        else if ( ii == GetVolumeGroupsTag() )
          strcpy( name_group, "Groups of Volumes" );
        else if ( ii == Get0DElementsGroupsTag() )
          strcpy( name_group, "Groups of 0D Elements" );
        else if ( ii == GetBallElementsGroupsTag() )
          strcpy( name_group, "Groups of Balls" );

        if ( aTopGroup->ExistInternalObject( name_group ) ) {
          aGroup = new HDFgroup( name_group, aTopGroup );
          aGroup->OpenOnDisk();
          // get number of groups
          int aNbSubObjects = aGroup->nInternalObjects();
          for ( int j = 0; j < aNbSubObjects; j++ ) {
            char name_dataset[ HDF_NAME_MAX_LEN+1 ];
            aGroup->InternalObjectIndentify( j, name_dataset );
            // check if it is an group
            if ( string( name_dataset ).substr( 0, 5 ) == string( "Group" ) ) {
              // --> get group id
              int subid = atoi( string( name_dataset ).substr( 5 ).c_str() );
              if ( subid <= 0 )
                continue;
              aDataset = new HDFdataset( name_dataset, aGroup );
              aDataset->OpenOnDisk();

              // Retrieve actual group name
              size = aDataset->GetSize();
              char* nameFromFile = new char[ size ];
              aDataset->ReadFromDisk( nameFromFile );
              aDataset->CloseOnDisk();

              // Try to find a shape reference
              TopoDS_Shape aShape;
              char aRefName[ 30 ];
              sprintf( aRefName, "Ref on shape %d", subid);
              if ( aGroup->ExistInternalObject( aRefName ) ) {
                // load mesh "Ref on shape" - it's an entry to SObject
                aDataset = new HDFdataset( aRefName, aGroup );
                aDataset->OpenOnDisk();
                size = aDataset->GetSize();
                char* refFromFile = new char[ size ];
                aDataset->ReadFromDisk( refFromFile );
                aDataset->CloseOnDisk();
                if ( strlen( refFromFile ) > 0 ) {
                  SALOMEDS::SObject_var shapeSO = myCurrentStudy->FindObjectID( refFromFile );
                  CORBA::Object_var shapeObject = SObjectToObject( shapeSO );
                  if ( !CORBA::is_nil( shapeObject ) ) {
                    aShapeObject = GEOM::GEOM_Object::_narrow( shapeObject );
                    if ( !aShapeObject->_is_nil() )
                      aShape = GeomObjectToShape( aShapeObject );
                  }
                }
              }
              // Try to read a filter of SMESH_GroupOnFilter
              SMESH::Filter_var filter;
              SMESH_PredicatePtr predicate;
              std::string hdfGrpName = "Filter " + SMESH_Comment(subid);
              if ( aGroup->ExistInternalObject( hdfGrpName.c_str() ))
              {
                aDataset = new HDFdataset( hdfGrpName.c_str(), aGroup );
                aDataset->OpenOnDisk();
                size = aDataset->GetSize();
                char* persistStr = new char[ size ];
                aDataset->ReadFromDisk( persistStr );
                aDataset->CloseOnDisk();
                if ( strlen( persistStr ) > 0 ) {
                  filter = SMESH_GroupOnFilter_i::StringToFilter( persistStr );
                  predicate = SMESH_GroupOnFilter_i::GetPredicate( filter );
                }
              }

              // Create group servant
              SMESH::ElementType type = (SMESH::ElementType)(ii - GetNodeGroupsTag() + 1);
              SMESH::SMESH_GroupBase_var aNewGroup = SMESH::SMESH_GroupBase::_duplicate
                ( myNewMeshImpl->createGroup( type, nameFromFile, aShape, predicate ) );
              // Obtain a SMESHDS_Group object
              if ( aNewGroup->_is_nil() )
                continue;

              string iorSubString = GetORB()->object_to_string( aNewGroup );
              int newSubId = myStudyContext->findId( iorSubString );
              myStudyContext->mapOldToNew( subid, newSubId );

              SMESH_GroupBase_i* aGroupImpl = SMESH::DownCast< SMESH_GroupBase_i*>( aNewGroup );
              if ( !aGroupImpl )
                continue;

              if ( SMESH_GroupOnFilter_i* aFilterGroup =
                   dynamic_cast< SMESH_GroupOnFilter_i*>( aGroupImpl ))
                aFilterGroup->SetFilter( filter );

              SMESHDS_GroupBase* aGroupBaseDS = aGroupImpl->GetGroupDS();
              if ( !aGroupBaseDS )
                continue;

              aGroupBaseDS->SetStoreName( name_dataset );

              // ouv : NPAL12872
              // Read color of the group
              char aGroupColorName[ 30 ];
              sprintf( aGroupColorName, "ColorGroup %d", subid);
              if ( aGroup->ExistInternalObject( aGroupColorName ) )
              {
                aDataset = new HDFdataset( aGroupColorName, aGroup );
                aDataset->OpenOnDisk();
                size = aDataset->GetSize();
                double* anRGB = new double[ size ];
                aDataset->ReadFromDisk( anRGB );
                aDataset->CloseOnDisk();
                Quantity_Color aColor( anRGB[0], anRGB[1], anRGB[2], Quantity_TOC_RGB );
                aGroupBaseDS->SetColor( aColor );
              }

              // Fill group with contents from MED file
              // SMESHDS_Group* aGrp = dynamic_cast<SMESHDS_Group*>( aGroupBaseDS );
              // if ( aGrp )
              //   myReader.GetGroup( aGrp );
            }
          }
          aGroup->CloseOnDisk();
        }
      } // reading GROUPs

      // instead of reading mesh data, we read only brief information of all
      // objects: mesh, groups, sub-meshes (issue 0021208 )
      if ( hasData )
      {
        SMESH_PreMeshInfo::LoadFromFile( myNewMeshImpl, id,
                                         meshfile.ToCString(), filename.ToCString(),
                                         !isMultiFile );
      }

      // read Sub-Mesh ORDER if any
      if( aTopGroup->ExistInternalObject( "Mesh Order" ) ) {
        aDataset = new HDFdataset( "Mesh Order", aTopGroup );
        aDataset->OpenOnDisk();
        size = aDataset->GetSize();
        int* smIDs = new int[ size ];
        aDataset->ReadFromDisk( smIDs );
        aDataset->CloseOnDisk();
        TListOfListOfInt anOrderIds;
        anOrderIds.push_back( TListOfInt() );
        for ( int i = 0; i < size; i++ )
          if ( smIDs[ i ] < 0 ) // is separator
            anOrderIds.push_back( TListOfInt() );
          else
            anOrderIds.back().push_back(smIDs[ i ]);

        myNewMeshImpl->GetImpl().SetMeshOrder( anOrderIds );
      }
    } // loop on meshes

    // update hyps needing full mesh data restored (issue 20918)
    for ( hyp_data = hypDataList.begin(); hyp_data != hypDataList.end(); ++hyp_data )
    {
      SMESH_Hypothesis_i* hyp  = hyp_data->first;
      hyp->UpdateAsMeshesRestored();
    }

    // notify algos on completed restoration to set sub-mesh event listeners
    for ( meshi_group = meshGroupList.begin(); meshi_group != meshGroupList.end(); ++meshi_group )
    {
      SMESH_Mesh_i* myNewMeshImpl = meshi_group->first;
      ::SMESH_Mesh& myLocMesh     = myNewMeshImpl->GetImpl();

      TopoDS_Shape myLocShape;
      if(myLocMesh.HasShapeToMesh())
        myLocShape = myLocMesh.GetShapeToMesh();
      else
        myLocShape = SMESH_Mesh::PseudoShape();

      myLocMesh.GetSubMesh(myLocShape)->
        ComputeStateEngine (SMESH_subMesh::SUBMESH_RESTORED);
    }

    // close mesh group
    if(aTopGroup)
      aTopGroup->CloseOnDisk();
  }
  // close HDF file
  aFile->CloseOnDisk();
  delete aFile;

  // Remove temporary files created from the stream
  if ( !isMultiFile )
  {
    SMESH_File meshFile( meshfile.ToCString() );
    if ( !meshFile ) // no meshfile exists
    {
      SALOMEDS_Tool::RemoveTemporaryFiles( tmpDir.ToCString(), aFileSeq.in(), true );
    }
    else
    {
      Engines::Container_var container = GetContainerRef();
      if ( Engines_Container_i* container_i = SMESH::DownCast<Engines_Container_i*>( container ))
      {
        container_i->registerTemporaryFile( filename.ToCString() );
        container_i->registerTemporaryFile( meshfile.ToCString() );
        container_i->registerTemporaryFile( tmpDir.ToCString() );
      }
    }
  }
  pd << ""; // prevent optimizing pd out

  INFOS( "SMESH_Gen_i::Load completed" );
  return true;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::LoadASCII
 *
 *  Load SMESH module's data in ASCII format
 */
//=============================================================================

bool SMESH_Gen_i::LoadASCII( SALOMEDS::SComponent_ptr theComponent,
                             const SALOMEDS::TMPFile& theStream,
                             const char*              theURL,
                             bool                     isMultiFile ) {
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::LoadASCII" );
  return Load( theComponent, theStream, theURL, isMultiFile );

  //before call main ::Load method it's need for decipher text format to
  //binary ( "|xx" => x' )
  int size = theStream.length();
  if ( int((size / 3 )*3) != size ) //error size of buffer
    return false;

  int real_size = int(size / 3);

  _CORBA_Octet* buffer = new _CORBA_Octet[real_size];
  char tmp[3];
  tmp[2]='\0';
  int c = -1;
  for ( int i = 0; i < real_size; i++ )
  {
    memcpy( &(tmp[0]), &(theStream[i*3+1]), 2 );
    sscanf( tmp, "%x", &c );
    sprintf( (char*)&(buffer[i]), "%c", (char)c );
  }

  SALOMEDS::TMPFile_var aRealStreamFile = new SALOMEDS::TMPFile(real_size, real_size, buffer, 1);

  return Load( theComponent, *(aRealStreamFile._retn()), theURL, isMultiFile );
}

//=============================================================================
/*!
 *  SMESH_Gen_i::Close
 *
 *  Clears study-connected data when it is closed
 */
//=============================================================================

void SMESH_Gen_i::Close( SALOMEDS::SComponent_ptr theComponent )
{
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::Close" );

  // set correct current study
  SALOMEDS::Study_var study = theComponent->GetStudy();
  if ( study->StudyId() != GetCurrentStudyID())
    setCurrentStudy( study, /*IsBeingClosed=*/true );

  // Clear study contexts data
  int studyId = GetCurrentStudyID();
  if ( myStudyContextMap.find( studyId ) != myStudyContextMap.end() ) {
    delete myStudyContextMap[ studyId ];
    myStudyContextMap.erase( studyId );
  }

  // delete SMESH_Mesh's
//   See bug IPAL19437.
//
//   StudyContextStruct* context = myGen.GetStudyContext( studyId );
//   map< int, SMESH_Mesh* >::iterator i_mesh = context->mapMesh.begin();
//   for ( ; i_mesh != context->mapMesh.end(); ++i_mesh ) {
//     printf( "--------------------------- SMESH_Gen_i::Close, delete aGroup = %p \n", i_mesh->second );
//     delete i_mesh->second;
//   }


  // delete SMESHDS_Mesh's
  // it's too long on big meshes
//   if ( context->myDocument ) {
//     delete context->myDocument;
//     context->myDocument = 0;
//   }

  // remove the tmp files meshes are loaded from
  SMESH_PreMeshInfo::RemoveStudyFiles_TMP_METHOD( theComponent );

  myCurrentStudy = SALOMEDS::Study::_nil();
  return;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::ComponentDataType
 *
 *  Get component data type
 */
//=============================================================================

char* SMESH_Gen_i::ComponentDataType()
{
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::ComponentDataType" );
  return CORBA::string_dup( "SMESH" );
}


//=============================================================================
/*!
 *  SMESH_Gen_i::IORToLocalPersistentID
 *
 *  Transform data from transient form to persistent
 */
//=============================================================================

char* SMESH_Gen_i::IORToLocalPersistentID( SALOMEDS::SObject_ptr /*theSObject*/,
                                           const char*           IORString,
                                           CORBA::Boolean        /*isMultiFile*/,
                                           CORBA::Boolean        /*isASCII*/ )
{
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::IORToLocalPersistentID" );
  StudyContext* myStudyContext = GetCurrentStudyContext();

  if ( myStudyContext && strcmp( IORString, "" ) != 0 ) {
    int anId = myStudyContext->findId( IORString );
    if ( anId ) {
      if(MYDEBUG) MESSAGE( "VSR " << anId )
      char strId[ 20 ];
      sprintf( strId, "%d", anId );
      return  CORBA::string_dup( strId );
    }
  }
  return CORBA::string_dup( "" );
}

//=============================================================================
/*!
 *  SMESH_Gen_i::LocalPersistentIDToIOR
 *
 *  Transform data from persistent form to transient
 */
//=============================================================================

char* SMESH_Gen_i::LocalPersistentIDToIOR( SALOMEDS::SObject_ptr /*theSObject*/,
                                           const char*           aLocalPersistentID,
                                           CORBA::Boolean        /*isMultiFile*/,
                                           CORBA::Boolean        /*isASCII*/ )
{
  if(MYDEBUG) MESSAGE( "SMESH_Gen_i::LocalPersistentIDToIOR(): id = " << aLocalPersistentID );
  StudyContext* myStudyContext = GetCurrentStudyContext();

  if ( myStudyContext && strcmp( aLocalPersistentID, "" ) != 0 ) {
    int anId = atoi( aLocalPersistentID );
    return CORBA::string_dup( myStudyContext->getIORbyOldId( anId ).c_str() );
  }
  return CORBA::string_dup( "" );
}

//=======================================================================
//function : RegisterObject
//purpose  :
//=======================================================================

int SMESH_Gen_i::RegisterObject(CORBA::Object_ptr theObject)
{
  StudyContext* myStudyContext = GetCurrentStudyContext();
  if ( myStudyContext && !CORBA::is_nil( theObject )) {
    CORBA::String_var iorString = GetORB()->object_to_string( theObject );
    return myStudyContext->addObject( string( iorString.in() ) );
  }
  return 0;
}

//================================================================================
/*!
 * \brief Return id of registered object
  * \param theObject - the Object
  * \retval int - Object id
 */
//================================================================================

CORBA::Long SMESH_Gen_i::GetObjectId(CORBA::Object_ptr theObject)
{
  StudyContext* myStudyContext = GetCurrentStudyContext();
  if ( myStudyContext && !CORBA::is_nil( theObject )) {
    string iorString = GetORB()->object_to_string( theObject );
    return myStudyContext->findId( iorString );
  }
  return 0;
}

//=============================================================================
/*!
 *  SMESH_Gen_i::SetName
 *
 *  Set a new object name
 */
//=============================================================================
void SMESH_Gen_i::SetName(const char* theIOR,
                          const char* theName)
{
  if ( theIOR && strcmp( theIOR, "" ) ) {
    CORBA::Object_var anObject = GetORB()->string_to_object( theIOR );
    SALOMEDS::SObject_var aSO = ObjectToSObject( myCurrentStudy, anObject );
    if ( !aSO->_is_nil() ) {
      SetName( aSO, theName );
    }
  }
}

int SMESH_Gen_i::GetCurrentStudyID()
{
  return myCurrentStudy->_is_nil() || myCurrentStudy->_non_existent() ? -1 : myCurrentStudy->StudyId();
}

//=============================================================================
/*!
 *  SMESHEngine_factory
 *
 *  C factory, accessible with dlsym, after dlopen
 */
//=============================================================================

extern "C"
{ SMESH_I_EXPORT
  PortableServer::ObjectId* SMESHEngine_factory( CORBA::ORB_ptr            orb,
                                                 PortableServer::POA_ptr   poa,
                                                 PortableServer::ObjectId* contId,
                                                 const char*               instanceName,
                                                 const char*               interfaceName )
  {
    if(MYDEBUG) MESSAGE( "PortableServer::ObjectId* SMESHEngine_factory()" );
    if(MYDEBUG) SCRUTE(interfaceName);
    SMESH_Gen_i* aSMESHGen = new SMESH_Gen_i(orb, poa, contId, instanceName, interfaceName);
    return aSMESHGen->getId() ;
  }
}