[bos #43370] Swich Composite Side to Wire Discretization. Fixed calling base class clear() for childs of SMDS_ElementHolder. Added debug output, removed redundant output, added GroupOnGeom cleaning placeholder.

src/SMDS/SMDS_ElementHolder.hxx

@@ -28,6 +28,7 @@
 #include "SMESH_SMDS.hxx"
 
 #include "SMDS_ElemIterator.hxx"
+#include "utilities.h"
 
 #include <smIdType.hxx>
 #include <vtkType.h>
@@ -70,7 +71,10 @@ class SMDS_EXPORT SMDS_ElementHolder
   virtual void compact() = 0;
 
   //!< allow the descendant treat its elements before mesh clearing
-  virtual void clear() {}
+  virtual void clear()
+  {
+    MESSAGE("SMDS_ElementHolder::clear() is not implemented");
+  }
 
   SMDS_Mesh* myMesh;
 

src/SMESH/SMESH_subMesh.cxx

@@ -1562,6 +1562,10 @@ bool SMESH_subMesh::ComputeStateEngine(compute_event event)
         try {
           OCC_CATCH_SIGNALS;
 
+          TopExp_Explorer subS(shape, _subShape.ShapeType());
+          const int subMeshId = _father->GetSubMesh(subS.Current())->GetId();
+          MESSAGE("Compute submesh " << subMeshId << " with algo " << algo->GetName());
+
           algo->InitComputeError();
 
           MemoryReserve aMemoryReserve;

src/SMESHDS/SMESHDS_GroupOnGeom.cxx

@@ -162,3 +162,13 @@ int SMESHDS_GroupOnGeom::GetTic() const
   return GetMesh()->GetMTime();
 }
 
+//================================================================================
+/*!
+ * \brief Clear the group content
+ */
+//================================================================================
+
+void SMESHDS_GroupOnGeom::Clear()
+{
+  resetIterator();
+}

src/SMESHDS/SMESHDS_GroupOnGeom.hxx

@@ -55,6 +55,8 @@ class SMESHDS_EXPORT SMESHDS_GroupOnGeom: public SMESHDS_GroupBase
 
   virtual int GetTic() const;
 
+  virtual void Clear();
+
  private:
 
   TopoDS_Shape           myShape;

src/SMESHDS/SMESHDS_Mesh.cxx

@@ -36,6 +36,7 @@
 #include "SMESHDS_GroupOnGeom.hxx"
 #include "SMESHDS_Script.hxx"
 #include "SMESHDS_TSubMeshHolder.hxx"
+#include "SMESHDS_GroupOnFilter.hxx"
 
 // #include <BRep_Tool.hxx>
 #include <TopExp.hxx>
@@ -1050,8 +1051,23 @@ void SMESHDS_Mesh::ClearMesh()
       g->Clear();
       g->SetType( groupType );
     }
+    else if (SMESHDS_GroupOnFilter* g = dynamic_cast<SMESHDS_GroupOnFilter*>(*group))
+    {
+      MESSAGE("Clearing SMESHDS_GroupOnFilter");
+
+      // TODO: clear filter
+      (*group)->Extent(); // to free cached elements in GroupOnFilter's
+    }
+    else if (SMESHDS_GroupOnGeom* g = dynamic_cast<SMESHDS_GroupOnGeom*>(*group))
+    {
+      SMDSAbs_ElementType groupType = g->GetType();
+      MESSAGE("Clearing SMESHDS_GroupOnGeom, type: " << groupType);
+
+      g->Clear();
+    }
     else
     {
+      MESSAGE("Clearing of unknown group type. Does nothing.");
       (*group)->Extent(); // to free cached elements in GroupOnFilter's
     }
   }

src/SMESHDS/SMESHDS_SubMesh.hxx

@@ -86,6 +86,7 @@ class SMESHDS_EXPORT SMESHDS_SubMesh : public SMDS_ElementHolder
   virtual void tmpClear();
   virtual void add( const SMDS_MeshElement* element );
   virtual void compact() {}
+  virtual void clear() override { Clear(); }
 
  private:
 

src/SMESH_I/SMESH_Mesh_i.cxx

@@ -3483,7 +3483,6 @@ void SMESH_Mesh_i::onHypothesisModified(int theHypID, bool theUpdateIcons)
 
 void SMESH_Mesh_i::SetImpl(::SMESH_Mesh * impl)
 {
-  MESSAGE("SMESH_Mesh_i::SetImpl");
   _impl = impl;
   if ( _impl )
     _impl->SetCallUp( new TCallUp_i(this));
@@ -3497,7 +3496,6 @@ void SMESH_Mesh_i::SetImpl(::SMESH_Mesh * impl)
 
 ::SMESH_Mesh & SMESH_Mesh_i::GetImpl()
 {
-  MESSAGE("SMESH_Mesh_i::GetImpl()");
   return *_impl;
 }