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[modules/paravis.git] / src / Plugins / MEDReader / IO / MEDFileFieldRepresentationTree.cxx
index 26a9c6cd08d1faa0c63bdaba0f03a269303d7417..9c19bfdfa90ce23aa6592802b6476d3d6ea40240 100644 (file)
@@ -1,4 +1,4 @@
-// Copyright (C) 2010-2014  CEA/DEN, EDF R&D
+// Copyright (C) 2010-2015  CEA/DEN, EDF R&D
 //
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
 #include "MEDFileData.hxx"
 #include "SauvReader.hxx"
 
+#ifdef MEDREADER_USE_MPI
+  #include "ParaMEDFileMesh.hxx"
+#endif
+
 #include "vtkXMLUnstructuredGridWriter.h"//
 
 #include "vtkUnstructuredGrid.h"
 #include "vtkFieldData.h"
 #include "vtkCellData.h"
 
-#include "vtksys/stl/string"
-#include "vtksys/ios/fstream"
-#include "vtksys/stl/algorithm"
 #include "vtkMutableDirectedGraph.h"
 
-using namespace ParaMEDMEM;
+using namespace MEDCoupling;
 
 const char MEDFileFieldRepresentationLeavesArrays::ZE_SEP[]="@@][@@";
 
@@ -73,7 +74,7 @@ const char MEDFileFieldRepresentationTree::ROOT_OF_FAM_IDS_IN_TREE[]="zeFamIds";
 
 const char MEDFileFieldRepresentationTree::COMPO_STR_TO_LOCATE_MESH_DA[]="-@?|*_";
 
-vtkIdTypeArray *ELGACmp::findOrCreate(const ParaMEDMEM::MEDFileFieldGlobsReal *globs, const std::vector<std::string>& locsReallyUsed, vtkDoubleArray *vtkd, vtkDataSet *ds, bool& isNew) const
+vtkIdTypeArray *ELGACmp::findOrCreate(const MEDCoupling::MEDFileFieldGlobsReal *globs, const std::vector<std::string>& locsReallyUsed, vtkDoubleArray *vtkd, vtkDataSet *ds, bool& isNew) const
 {
   vtkIdTypeArray *try0(isExisting(locsReallyUsed,vtkd));
   if(try0)
@@ -104,9 +105,9 @@ vtkIdTypeArray *ELGACmp::isExisting(const std::vector<std::string>& locsReallyUs
   return ret;
 }
 
-vtkIdTypeArray *ELGACmp::createNew(const ParaMEDMEM::MEDFileFieldGlobsReal *globs, const std::vector<std::string>& locsReallyUsed, vtkDoubleArray *vtkd, vtkDataSet *ds) const
+vtkIdTypeArray *ELGACmp::createNew(const MEDCoupling::MEDFileFieldGlobsReal *globs, const std::vector<std::string>& locsReallyUsed, vtkDoubleArray *vtkd, vtkDataSet *ds) const
 {
-  static const int VTK_DATA_ARRAY_DELETE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_DELETE;
+  const int VTK_DATA_ARRAY_DELETE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_DELETE;
   std::vector< std::vector<std::string> > locNames(_loc_names);
   std::vector<vtkIdTypeArray *> elgas(_elgas);
   std::vector< std::pair< vtkQuadratureSchemeDefinition *, unsigned char > > defs;
@@ -163,7 +164,7 @@ vtkIdTypeArray *ELGACmp::createNew(const ParaMEDMEM::MEDFileFieldGlobsReal *glob
       offset+=delta;
     }
   elga->GetInformation()->Set(MEDUtilities::ELGA(),1);
-  elga->SetArray(pt,ncell,0,VTK_DATA_ARRAY_DELETE);
+  elga->SetVoidArray(pt,ncell,0,VTK_DATA_ARRAY_DELETE);
   std::ostringstream oss; oss << "ELGA" << "@" << _loc_names.size();
   std::string ossStr(oss.str());
   elga->SetName(ossStr.c_str());
@@ -197,21 +198,21 @@ MEDFileFieldRepresentationLeavesArrays::MEDFileFieldRepresentationLeavesArrays()
 {
 }
 
-MEDFileFieldRepresentationLeavesArrays::MEDFileFieldRepresentationLeavesArrays(const ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDFileAnyTypeFieldMultiTS>& arr):ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDFileAnyTypeFieldMultiTS>(arr),_activated(false),_id(-1)
+MEDFileFieldRepresentationLeavesArrays::MEDFileFieldRepresentationLeavesArrays(const MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDFileAnyTypeFieldMultiTS>& arr):MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDFileAnyTypeFieldMultiTS>(arr),_activated(false),_id(-1)
 {
-  std::vector< std::vector<ParaMEDMEM::TypeOfField> > typs((operator->())->getTypesOfFieldAvailable());
+  std::vector< std::vector<MEDCoupling::TypeOfField> > typs((operator->())->getTypesOfFieldAvailable());
   if(typs.size()<1)
     throw INTERP_KERNEL::Exception("There is a big internal problem in MEDLoader ! The field time spitting has failed ! A CRASH will occur soon !");
   if(typs[0].size()!=1)
     throw INTERP_KERNEL::Exception("There is a big internal problem in MEDLoader ! The field spitting by spatial discretization has failed ! A CRASH will occur soon !");
-  ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDCouplingFieldDiscretization> fd(MEDCouplingFieldDiscretization::New(typs[0][0]));
+  MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDCouplingFieldDiscretization> fd(MEDCouplingFieldDiscretization::New(typs[0][0]));
   std::ostringstream oss2; oss2 << (operator->())->getName() << ZE_SEP << fd->getRepr();
   _ze_name=oss2.str();
 }
 
 MEDFileFieldRepresentationLeavesArrays& MEDFileFieldRepresentationLeavesArrays::operator=(const MEDFileFieldRepresentationLeavesArrays& other)
 {
-  ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDFileAnyTypeFieldMultiTS>::operator=(other);
+  MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDFileAnyTypeFieldMultiTS>::operator=(other);
   _id=-1;
   _activated=false;
   _ze_name=other._ze_name;
@@ -269,10 +270,10 @@ bool MEDFileFieldRepresentationLeavesArrays::setStatus(bool status) const
   return ret;
 }
 
-void MEDFileFieldRepresentationLeavesArrays::appendFields(const MEDTimeReq *tr, const ParaMEDMEM::MEDFileFieldGlobsReal *globs, const ParaMEDMEM::MEDMeshMultiLev *mml, const ParaMEDMEM::MEDFileMeshStruct *mst, vtkDataSet *ds) const
+void MEDFileFieldRepresentationLeavesArrays::appendFields(const MEDTimeReq *tr, const MEDCoupling::MEDFileFieldGlobsReal *globs, const MEDCoupling::MEDMeshMultiLev *mml, const MEDCoupling::MEDFileMeshStruct *mst, vtkDataSet *ds) const
 {
-  static const int VTK_DATA_ARRAY_FREE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_FREE;
-  static const int VTK_DATA_ARRAY_DELETE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_DELETE;
+  const int VTK_DATA_ARRAY_FREE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_FREE;
+  const int VTK_DATA_ARRAY_DELETE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_DELETE;
   tr->setNumberOfTS((operator->())->getNumberOfTS());
   tr->initIterator();
   for(int timeStepId=0;timeStepId<tr->size();timeStepId++,++(*tr))
@@ -362,7 +363,7 @@ void MEDFileFieldRepresentationLeavesArrays::appendFields(const MEDTimeReq *tr,
                   offset+=delta;
                 }
               elno->GetInformation()->Set(MEDUtilities::ELNO(),1);
-              elno->SetArray(pt,ncell,0,VTK_DATA_ARRAY_DELETE);
+              elno->SetVoidArray(pt,ncell,0,VTK_DATA_ARRAY_DELETE);
               std::string nameElno("ELNO"); nameElno+="@"; nameElno+=name;
               elno->SetName(nameElno.c_str());
               ds->GetCellData()->AddArray(elno);
@@ -438,8 +439,8 @@ MEDFileFieldRepresentationLeaves::MEDFileFieldRepresentationLeaves():_cached_ds(
 {
 }
 
-MEDFileFieldRepresentationLeaves::MEDFileFieldRepresentationLeaves(const std::vector< ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDFileAnyTypeFieldMultiTS> >& arr,
-                                                                   const ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDFileFastCellSupportComparator>& fsp):_arrays(arr.size()),_fsp(fsp),_cached_ds(0)
+MEDFileFieldRepresentationLeaves::MEDFileFieldRepresentationLeaves(const std::vector< MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDFileAnyTypeFieldMultiTS> >& arr,
+                                                                   const MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDFileFastCellSupportComparator>& fsp):_arrays(arr.size()),_fsp(fsp),_cached_ds(0)
 {
   for(std::size_t i=0;i<arr.size();i++)
     _arrays[i]=MEDFileFieldRepresentationLeavesArrays(arr[i]);
@@ -487,7 +488,7 @@ void MEDFileFieldRepresentationLeaves::computeFullNameInLeaves(const std::string
 /*!
  * \param [in] ms is the meshes pointer. It can be used only for information of geometric types. No special processing will be requested on ms.
  */
-void MEDFileFieldRepresentationLeaves::feedSIL(const ParaMEDMEM::MEDFileMeshes *ms, const std::string& meshName, vtkMutableDirectedGraph* sil, vtkIdType root, vtkVariantArray *edge, std::vector<std::string>& names) const
+void MEDFileFieldRepresentationLeaves::feedSIL(const MEDCoupling::MEDFileMeshes *ms, const std::string& meshName, vtkMutableDirectedGraph* sil, vtkIdType root, vtkVariantArray *edge, std::vector<std::string>& names) const
 {
   vtkIdType root2(sil->AddChild(root,edge));
   names.push_back(std::string("Arrs"));
@@ -496,10 +497,10 @@ void MEDFileFieldRepresentationLeaves::feedSIL(const ParaMEDMEM::MEDFileMeshes *
   //
   vtkIdType root3(sil->AddChild(root,edge));
   names.push_back(std::string("InfoOnGeoType"));
-  const ParaMEDMEM::MEDFileMesh *m(0);
+  const MEDCoupling::MEDFileMesh *m(0);
   if(ms)
     m=ms->getMeshWithName(meshName);
-  const ParaMEDMEM::MEDFileFastCellSupportComparator *fsp(_fsp);
+  const MEDCoupling::MEDFileFastCellSupportComparator *fsp(_fsp);
   if(!fsp || fsp->getNumberOfTS()==0)
     return ;
   std::vector< INTERP_KERNEL::NormalizedCellType > gts(fsp->getGeoTypesAt(0,m));
@@ -531,6 +532,12 @@ bool MEDFileFieldRepresentationLeaves::containZeName(const char *name, int& id)
   return false;
 }
 
+void MEDFileFieldRepresentationLeaves::dumpState(std::map<std::string,bool>& status) const
+{
+  for(std::vector<MEDFileFieldRepresentationLeavesArrays>::const_iterator it=_arrays.begin();it!=_arrays.end();it++)
+    status[(*it).getZeName()]=(*it).getStatus();
+}
+
 bool MEDFileFieldRepresentationLeaves::isActivated() const
 {
   for(std::vector<MEDFileFieldRepresentationLeavesArrays>::const_iterator it=_arrays.begin();it!=_arrays.end();it++)
@@ -609,7 +616,7 @@ std::string MEDFileFieldRepresentationLeaves::getHumanReadableOverviewOfTS() con
   return oss.str();
 }
 
-void MEDFileFieldRepresentationLeaves::appendFields(const MEDTimeReq *tr, const ParaMEDMEM::MEDFileFieldGlobsReal *globs, const ParaMEDMEM::MEDMeshMultiLev *mml, const ParaMEDMEM::MEDFileMeshes *meshes, vtkDataSet *ds) const
+void MEDFileFieldRepresentationLeaves::appendFields(const MEDTimeReq *tr, const MEDCoupling::MEDFileFieldGlobsReal *globs, const MEDCoupling::MEDMeshMultiLev *mml, const MEDCoupling::MEDFileMeshes *meshes, vtkDataSet *ds) const
 {
   if(_arrays.size()<1)
     throw INTERP_KERNEL::Exception("MEDFileFieldRepresentationLeaves::appendFields : internal error !");
@@ -624,7 +631,7 @@ void MEDFileFieldRepresentationLeaves::appendFields(const MEDTimeReq *tr, const
 
 vtkUnstructuredGrid *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInterpolationUnstructured(MEDUMeshMultiLev *mm) const
 {
-  static const int VTK_DATA_ARRAY_FREE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_FREE;
+  const int VTK_DATA_ARRAY_FREE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_FREE;
   DataArrayDouble *coordsMC(0);
   DataArrayByte *typesMC(0);
   DataArrayInt *cellLocationsMC(0),*cellsMC(0),*faceLocationsMC(0),*facesMC(0);
@@ -638,18 +645,18 @@ vtkUnstructuredGrid *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInt
   vtkUnsignedCharArray *cellTypes(vtkUnsignedCharArray::New());
   cellTypes->SetArray(reinterpret_cast<unsigned char *>(typesSafe->getPointer()),nbOfCells,0,VTK_DATA_ARRAY_FREE); typesSafe->accessToMemArray().setSpecificDeallocator(0);
   vtkIdTypeArray *cellLocations(vtkIdTypeArray::New());
-  cellLocations->SetArray(cellLocationsSafe->getPointer(),nbOfCells,0,VTK_DATA_ARRAY_FREE); cellLocationsSafe->accessToMemArray().setSpecificDeallocator(0);
+  cellLocations->SetVoidArray(cellLocationsSafe->getPointer(),nbOfCells,0,VTK_DATA_ARRAY_FREE); cellLocationsSafe->accessToMemArray().setSpecificDeallocator(0);
   vtkCellArray *cells(vtkCellArray::New());
   vtkIdTypeArray *cells2(vtkIdTypeArray::New());
-  cells2->SetArray(cellsSafe->getPointer(),cellsSafe->getNbOfElems(),0,VTK_DATA_ARRAY_FREE); cellsSafe->accessToMemArray().setSpecificDeallocator(0);
+  cells2->SetVoidArray(cellsSafe->getPointer(),cellsSafe->getNbOfElems(),0,VTK_DATA_ARRAY_FREE); cellsSafe->accessToMemArray().setSpecificDeallocator(0);
   cells->SetCells(nbOfCells,cells2);
   cells2->Delete();
   if(faceLocationsMC!=0 && facesMC!=0)
     {
       vtkIdTypeArray *faces(vtkIdTypeArray::New());
-      faces->SetArray(facesSafe->getPointer(),facesSafe->getNbOfElems(),0,VTK_DATA_ARRAY_FREE); facesSafe->accessToMemArray().setSpecificDeallocator(0);
+      faces->SetVoidArray(facesSafe->getPointer(),facesSafe->getNbOfElems(),0,VTK_DATA_ARRAY_FREE); facesSafe->accessToMemArray().setSpecificDeallocator(0);
       vtkIdTypeArray *faceLocations(vtkIdTypeArray::New());
-      faceLocations->SetArray(faceLocationsSafe->getPointer(),faceLocationsSafe->getNbOfElems(),0,VTK_DATA_ARRAY_FREE); faceLocationsSafe->accessToMemArray().setSpecificDeallocator(0);
+      faceLocations->SetVoidArray(faceLocationsSafe->getPointer(),faceLocationsSafe->getNbOfElems(),0,VTK_DATA_ARRAY_FREE); faceLocationsSafe->accessToMemArray().setSpecificDeallocator(0);
       ret->SetCells(cellTypes,cellLocations,cells,faceLocations,faces);
       faceLocations->Delete();
       faces->Delete();
@@ -677,9 +684,9 @@ vtkUnstructuredGrid *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInt
   return ret;
 }
 
-vtkRectilinearGrid *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInterpolationCartesian(ParaMEDMEM::MEDCMeshMultiLev *mm) const
+vtkRectilinearGrid *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInterpolationCartesian(MEDCoupling::MEDCMeshMultiLev *mm) const
 {
-  static const int VTK_DATA_ARRAY_FREE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_FREE;
+  const int VTK_DATA_ARRAY_FREE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_FREE;
   bool isInternal;
   std::vector< DataArrayDouble * > arrs(mm->buildVTUArrays(isInternal));
   vtkDoubleArray *vtkTmp(0);
@@ -730,9 +737,9 @@ vtkRectilinearGrid *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInte
   return ret;
 }
 
-vtkStructuredGrid *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInterpolationCurveLinear(ParaMEDMEM::MEDCurveLinearMeshMultiLev *mm) const
+vtkStructuredGrid *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInterpolationCurveLinear(MEDCoupling::MEDCurveLinearMeshMultiLev *mm) const
 {
-  static const int VTK_DATA_ARRAY_FREE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_FREE;
+  const int VTK_DATA_ARRAY_FREE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_FREE;
   int meshStr[3]={1,1,1};
   DataArrayDouble *coords(0);
   std::vector<int> nodeStrct;
@@ -772,9 +779,9 @@ vtkStructuredGrid *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInter
   return ret;
 }
  
-vtkDataSet *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInterpolation(const MEDTimeReq *tr, const MEDFileFieldGlobsReal *globs, const ParaMEDMEM::MEDFileMeshes *meshes) const
+vtkDataSet *MEDFileFieldRepresentationLeaves::buildVTKInstanceNoTimeInterpolation(const MEDTimeReq *tr, const MEDFileFieldGlobsReal *globs, const MEDCoupling::MEDFileMeshes *meshes) const
 {
-  static const int VTK_DATA_ARRAY_FREE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_FREE;
+  const int VTK_DATA_ARRAY_FREE=vtkDataArrayTemplate<double>::VTK_DATA_ARRAY_FREE;
   vtkDataSet *ret(0);
   //_fsp->isDataSetSupportEqualToThePreviousOne(i,globs);
   MEDCouplingAutoRefCountObjectPtr<MEDMeshMultiLev> mml(_fsp->buildFromScratchDataSetSupport(0,globs));//0=timestep Id. Make the hypothesis that support does not change 
@@ -1087,31 +1094,52 @@ int MEDFileFieldRepresentationTree::getMaxNumberOfTimeSteps() const
 /*!
  * 
  */
-void MEDFileFieldRepresentationTree::loadMainStructureOfFile(const char *fileName, bool isMEDOrSauv)
+void MEDFileFieldRepresentationTree::loadMainStructureOfFile(const char *fileName, bool isMEDOrSauv, int iPart, int nbOfParts)
 {
   if(isMEDOrSauv)
     {
-      _ms=MEDFileMeshes::New(fileName);
-      _fields=MEDFileFields::New(fileName,false);//false is important to not read the values
+      if((iPart==-1 && nbOfParts==-1) || (iPart==0 && nbOfParts==1))
+        {
+          _ms=MEDFileMeshes::New(fileName);
+          _fields=MEDFileFields::New(fileName,false);//false is important to not read the values
+        }
+      else
+        {
+#ifdef MEDREADER_USE_MPI
+          _ms=ParaMEDFileMeshes::New(iPart,nbOfParts,fileName);
+          int nbMeshes(_ms->getNumberOfMeshes());
+          for(int i=0;i<nbMeshes;i++)
+            {
+              MEDCoupling::MEDFileMesh *tmp(_ms->getMeshAtPos(i));
+              MEDCoupling::MEDFileUMesh *tmp2(dynamic_cast<MEDCoupling::MEDFileUMesh *>(tmp));
+              if(tmp2)
+                MEDCouplingAutoRefCountObjectPtr<DataArrayInt> tmp3(tmp2->zipCoords());
+            }
+          _fields=MEDFileFields::LoadPartOf(fileName,false,_ms);//false is important to not read the values
+#else
+          std::ostringstream oss; oss << "MEDFileFieldRepresentationTree::loadMainStructureOfFile : request for iPart/nbOfParts=" << iPart << "/" << nbOfParts << " whereas Plugin not compiled with MPI !";
+          throw INTERP_KERNEL::Exception(oss.str().c_str());
+#endif
+        }
     }
   else
     {
-      MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::SauvReader> sr(ParaMEDMEM::SauvReader::New(fileName));
-      MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDFileData> mfd(sr->loadInMEDFileDS());
+      MEDCouplingAutoRefCountObjectPtr<MEDCoupling::SauvReader> sr(MEDCoupling::SauvReader::New(fileName));
+      MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDFileData> mfd(sr->loadInMEDFileDS());
       _ms=mfd->getMeshes(); _ms->incrRef();
       int nbMeshes(_ms->getNumberOfMeshes());
       for(int i=0;i<nbMeshes;i++)
         {
-          ParaMEDMEM::MEDFileMesh *tmp(_ms->getMeshAtPos(i));
-          ParaMEDMEM::MEDFileUMesh *tmp2(dynamic_cast<ParaMEDMEM::MEDFileUMesh *>(tmp));
+          MEDCoupling::MEDFileMesh *tmp(_ms->getMeshAtPos(i));
+          MEDCoupling::MEDFileUMesh *tmp2(dynamic_cast<MEDCoupling::MEDFileUMesh *>(tmp));
           if(tmp2)
             tmp2->forceComputationOfParts();
         }
       _fields=mfd->getFields();
-      if((ParaMEDMEM::MEDFileFields *)_fields)
+      if((MEDCoupling::MEDFileFields *)_fields)
         _fields->incrRef();
     }
-  if(!((ParaMEDMEM::MEDFileFields *)_fields))
+  if(!((MEDCoupling::MEDFileFields *)_fields))
     {
       _fields=BuildFieldFromMeshes(_ms);
     }
@@ -1119,6 +1147,7 @@ void MEDFileFieldRepresentationTree::loadMainStructureOfFile(const char *fileNam
     {
       AppendFieldFromMeshes(_ms,_fields);
     }
+  _ms->cartesianizeMe();
   _fields->removeFieldsWithoutAnyTimeStep();
   std::vector<std::string> meshNames(_ms->getMeshesNames());
   std::vector< MEDCouplingAutoRefCountObjectPtr<MEDFileFields> > fields_per_mesh(meshNames.size());
@@ -1134,7 +1163,24 @@ void MEDFileFieldRepresentationTree::loadMainStructureOfFile(const char *fileNam
         {
           MEDCouplingAutoRefCountObjectPtr<MEDFileAnyTypeFieldMultiTS> fmts((*fields)->getFieldAtPos((int)j));
           std::vector< MEDCouplingAutoRefCountObjectPtr< MEDFileAnyTypeFieldMultiTS > > tmp(fmts->splitDiscretizations());
-          allFMTSLeavesToDisplaySafe.insert(allFMTSLeavesToDisplaySafe.end(),tmp.begin(),tmp.end());
+          // EDF 8655
+          for(std::vector< MEDCouplingAutoRefCountObjectPtr< MEDFileAnyTypeFieldMultiTS > >::const_iterator it=tmp.begin();it!=tmp.end();it++)
+            {
+              if(!(*it)->presenceOfMultiDiscPerGeoType())
+                allFMTSLeavesToDisplaySafe.push_back(*it);
+              else
+                {// The case of some parts of field have more than one discretization per geo type.
+                  std::vector< MEDCouplingAutoRefCountObjectPtr< MEDFileAnyTypeFieldMultiTS > > subTmp((*it)->splitMultiDiscrPerGeoTypes());
+                  std::size_t it0Cnt(0);
+                  for(std::vector< MEDCouplingAutoRefCountObjectPtr< MEDFileAnyTypeFieldMultiTS > >::iterator it0=subTmp.begin();it0!=subTmp.end();it0++,it0Cnt++)//not const because setName
+                    {
+                      std::ostringstream oss; oss << (*it0)->getName() << "_" << std::setfill('M') << std::setw(3) << it0Cnt;
+                      (*it0)->setName(oss.str());
+                      allFMTSLeavesToDisplaySafe.push_back(*it0);
+                    }
+                }
+            }
+         // end EDF 8655
         }
     }
   std::vector< MEDFileAnyTypeFieldMultiTS *> allFMTSLeavesToDisplay(allFMTSLeavesToDisplaySafe.size());
@@ -1159,12 +1205,12 @@ void MEDFileFieldRepresentationTree::loadMainStructureOfFile(const char *fileNam
   this->_data_structure.resize(allFMTSLeavesPerTimeSeriesSafe.size());
   for(std::size_t i=0;i<allFMTSLeavesPerTimeSeriesSafe.size();i++)
     {
-      vtksys_stl::vector< vtksys_stl::string > meshNamesLoc;
+      std::vector< std::string > meshNamesLoc;
       std::vector< std::vector< MEDCouplingAutoRefCountObjectPtr<MEDFileAnyTypeFieldMultiTS> > > splitByMeshName;
       for(std::size_t j=0;j<allFMTSLeavesPerTimeSeriesSafe[i].size();j++)
         {
           std::string meshName(allFMTSLeavesPerTimeSeriesSafe[i][j]->getMeshName());
-          vtksys_stl::vector< vtksys_stl::string >::iterator it(std::find(meshNamesLoc.begin(),meshNamesLoc.end(),meshName));
+          std::vector< std::string >::iterator it(std::find(meshNamesLoc.begin(),meshNamesLoc.end(),meshName));
           if(it==meshNamesLoc.end())
             {
               meshNamesLoc.push_back(meshName);
@@ -1351,72 +1397,98 @@ void MEDFileFieldRepresentationTree::printMySelf(std::ostream& os) const
     os << "$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$" << std::endl;
 }
 
-void MEDFileFieldRepresentationTree::AppendFieldFromMeshes(const ParaMEDMEM::MEDFileMeshes *ms, ParaMEDMEM::MEDFileFields *ret)
+std::map<std::string,bool> MEDFileFieldRepresentationTree::dumpState() const
 {
+  std::map<std::string,bool> ret;
+  for(std::vector< std::vector< std::vector< MEDFileFieldRepresentationLeaves > > >::const_iterator it0=_data_structure.begin();it0!=_data_structure.end();it0++)
+    for(std::vector< std::vector< MEDFileFieldRepresentationLeaves > >::const_iterator it1=(*it0).begin();it1!=(*it0).end();it1++)
+      for(std::vector< MEDFileFieldRepresentationLeaves >::const_iterator it2=(*it1).begin();it2!=(*it1).end();it2++)
+        (*it2).dumpState(ret);
+  return ret;
+}
+
+void MEDFileFieldRepresentationTree::AppendFieldFromMeshes(const MEDCoupling::MEDFileMeshes *ms, MEDCoupling::MEDFileFields *ret)
+{
+  if(!ret)
+    throw INTERP_KERNEL::Exception("MEDFileFieldRepresentationTree::AppendFieldFromMeshes : internal error ! NULL ret !");
   for(int i=0;i<ms->getNumberOfMeshes();i++)
     {
       MEDFileMesh *mm(ms->getMeshAtPos(i));
       std::vector<int> levs(mm->getNonEmptyLevels());
-      ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDFileField1TS> f1tsMultiLev(ParaMEDMEM::MEDFileField1TS::New());
+      MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDFileField1TS> f1tsMultiLev(MEDCoupling::MEDFileField1TS::New());
       MEDFileUMesh *mmu(dynamic_cast<MEDFileUMesh *>(mm));
       if(mmu)
-       {
-         for(std::vector<int>::const_iterator it=levs.begin();it!=levs.end();it++)
-           {
-             std::vector<INTERP_KERNEL::NormalizedCellType> gts(mmu->getGeoTypesAtLevel(*it));
-             for(std::vector<INTERP_KERNEL::NormalizedCellType>::const_iterator gt=gts.begin();gt!=gts.end();gt++)
-               {
-                 ParaMEDMEM::MEDCouplingMesh *m(mmu->getDirectUndergroundSingleGeoTypeMesh(*gt));
-                 ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDCouplingFieldDouble> f(ParaMEDMEM::MEDCouplingFieldDouble::New(ParaMEDMEM::ON_CELLS));
-                 f->setMesh(m);
-                 ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::DataArrayDouble> arr(ParaMEDMEM::DataArrayDouble::New()); arr->alloc(f->getNumberOfTuplesExpected());
-                 arr->setInfoOnComponent(0,std::string(COMPO_STR_TO_LOCATE_MESH_DA));
-                 arr->iota();
-                 f->setArray(arr);
-                 f->setName(mm->getName());
-                 f1tsMultiLev->setFieldNoProfileSBT(f);
-               }
-           }
-         if(levs.empty())
-           {
-             std::vector<int> levsExt(mm->getNonEmptyLevelsExt());
-             if(levsExt.size()==levs.size()+1)
-               {
-                 ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDCouplingMesh> m(mm->getGenMeshAtLevel(1));
-                 ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDCouplingFieldDouble> f(ParaMEDMEM::MEDCouplingFieldDouble::New(ParaMEDMEM::ON_NODES));
-                 f->setMesh(m);
-                 ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::DataArrayDouble> arr(ParaMEDMEM::DataArrayDouble::New()); arr->alloc(m->getNumberOfNodes());
-                 arr->setInfoOnComponent(0,std::string(COMPO_STR_TO_LOCATE_MESH_DA));
-                 arr->iota(); f->setArray(arr);
-                 f->setName(mm->getName());
-                 f1tsMultiLev->setFieldNoProfileSBT(f);
-               }
-             else
-               continue;
-           }
-       }
+        {
+          for(std::vector<int>::const_iterator it=levs.begin();it!=levs.end();it++)
+            {
+              std::vector<INTERP_KERNEL::NormalizedCellType> gts(mmu->getGeoTypesAtLevel(*it));
+              for(std::vector<INTERP_KERNEL::NormalizedCellType>::const_iterator gt=gts.begin();gt!=gts.end();gt++)
+                {
+                  MEDCoupling::MEDCouplingMesh *m(mmu->getDirectUndergroundSingleGeoTypeMesh(*gt));
+                  MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDCouplingFieldDouble> f(MEDCoupling::MEDCouplingFieldDouble::New(MEDCoupling::ON_CELLS));
+                  f->setMesh(m);
+                  MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::DataArrayDouble> arr(MEDCoupling::DataArrayDouble::New()); arr->alloc(f->getNumberOfTuplesExpected());
+                  arr->setInfoOnComponent(0,std::string(COMPO_STR_TO_LOCATE_MESH_DA));
+                  arr->iota();
+                  f->setArray(arr);
+                  f->setName(BuildAUniqueArrayNameForMesh(mm->getName(),ret));
+                  f1tsMultiLev->setFieldNoProfileSBT(f);
+                }
+            }
+          if(levs.empty())
+            {
+              std::vector<int> levsExt(mm->getNonEmptyLevelsExt());
+              if(levsExt.size()==levs.size()+1)
+                {
+                  MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDCouplingMesh> m(mm->getMeshAtLevel(1));
+                  MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDCouplingFieldDouble> f(MEDCoupling::MEDCouplingFieldDouble::New(MEDCoupling::ON_NODES));
+                  f->setMesh(m);
+                  MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::DataArrayDouble> arr(MEDCoupling::DataArrayDouble::New()); arr->alloc(m->getNumberOfNodes());
+                  arr->setInfoOnComponent(0,std::string(COMPO_STR_TO_LOCATE_MESH_DA));
+                  arr->iota(); f->setArray(arr);
+                  f->setName(BuildAUniqueArrayNameForMesh(mm->getName(),ret));
+                  f1tsMultiLev->setFieldNoProfileSBT(f);
+                }
+              else
+                continue;
+            }
+        }
       else
-       {
-         ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDCouplingMesh> m(mm->getGenMeshAtLevel(0));
-         ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDCouplingFieldDouble> f(ParaMEDMEM::MEDCouplingFieldDouble::New(ParaMEDMEM::ON_CELLS));
-         f->setMesh(m);
-         ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::DataArrayDouble> arr(ParaMEDMEM::DataArrayDouble::New()); arr->alloc(f->getNumberOfTuplesExpected());
-         arr->setInfoOnComponent(0,std::string(COMPO_STR_TO_LOCATE_MESH_DA));
-         arr->iota();
-         f->setArray(arr);
-         f->setName(mm->getName());
-         f1tsMultiLev->setFieldNoProfileSBT(f);
-       }
+        {
+          MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDCouplingMesh> m(mm->getMeshAtLevel(0));
+          MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDCouplingFieldDouble> f(MEDCoupling::MEDCouplingFieldDouble::New(MEDCoupling::ON_CELLS));
+          f->setMesh(m);
+          MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::DataArrayDouble> arr(MEDCoupling::DataArrayDouble::New()); arr->alloc(f->getNumberOfTuplesExpected());
+          arr->setInfoOnComponent(0,std::string(COMPO_STR_TO_LOCATE_MESH_DA));
+          arr->iota();
+          f->setArray(arr);
+          f->setName(BuildAUniqueArrayNameForMesh(mm->getName(),ret));
+          f1tsMultiLev->setFieldNoProfileSBT(f);
+        }
       //
-      ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDFileFieldMultiTS> fmtsMultiLev(ParaMEDMEM::MEDFileFieldMultiTS::New());
+      MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDFileFieldMultiTS> fmtsMultiLev(MEDCoupling::MEDFileFieldMultiTS::New());
       fmtsMultiLev->pushBackTimeStep(f1tsMultiLev);
       ret->pushField(fmtsMultiLev);
     }
 }
 
-ParaMEDMEM::MEDFileFields *MEDFileFieldRepresentationTree::BuildFieldFromMeshes(const ParaMEDMEM::MEDFileMeshes *ms)
+std::string MEDFileFieldRepresentationTree::BuildAUniqueArrayNameForMesh(const std::string& meshName, const MEDCoupling::MEDFileFields *ret)
+{
+  const char KEY_STR_TO_AVOID_COLLIDE[]="MESH@";
+  if(!ret)
+    throw INTERP_KERNEL::Exception("MEDFileFieldRepresentationTree::BuildAUniqueArrayNameForMesh : internal error ! NULL ret !");
+  std::vector<std::string> fieldNamesAlreadyExisting(ret->getFieldsNames());
+  if(std::find(fieldNamesAlreadyExisting.begin(),fieldNamesAlreadyExisting.end(),meshName)==fieldNamesAlreadyExisting.end())
+    return meshName;
+  std::string tmpName(KEY_STR_TO_AVOID_COLLIDE); tmpName+=meshName;
+  while(std::find(fieldNamesAlreadyExisting.begin(),fieldNamesAlreadyExisting.end(),tmpName)!=fieldNamesAlreadyExisting.end())
+    tmpName=std::string(KEY_STR_TO_AVOID_COLLIDE)+tmpName;
+  return tmpName;
+}
+
+MEDCoupling::MEDFileFields *MEDFileFieldRepresentationTree::BuildFieldFromMeshes(const MEDCoupling::MEDFileMeshes *ms)
 {
-  ParaMEDMEM::MEDCouplingAutoRefCountObjectPtr<ParaMEDMEM::MEDFileFields> ret(ParaMEDMEM::MEDFileFields::New());
+  MEDCoupling::MEDCouplingAutoRefCountObjectPtr<MEDCoupling::MEDFileFields> ret(MEDCoupling::MEDFileFields::New());
   AppendFieldFromMeshes(ms,ret);
   return ret.retn();
 }
@@ -1462,7 +1534,7 @@ std::vector<std::string> MEDFileFieldRepresentationTree::SplitFieldNameIntoParts
 */
 std::string MEDFileFieldRepresentationTree::PostProcessFieldName(const std::string& fullFieldName)
 {
-  static const char SEP('_');
+  const char SEP('_');
   std::vector<std::string> v(SplitFieldNameIntoParts(fullFieldName,SEP));
   if(v.empty())
     return fullFieldName;//should never happen