X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FMEDLoader%2FMEDFileMesh.hxx;h=6dfd75a739cf8c1c8245d3706f0397fb2be641e0;hb=b33408f1dc045a4d0f2e16d22f4930d7029996a3;hp=ca36d3f870ea5a29849b0d894a46ca7927de6a1a;hpb=6c6698a5ba40beba404cceffb3e3fae3c43a0b41;p=tools%2Fmedcoupling.git

diff --git a/src/MEDLoader/MEDFileMesh.hxx b/src/MEDLoader/MEDFileMesh.hxx
index ca36d3f87..6dfd75a73 100644
--- a/src/MEDLoader/MEDFileMesh.hxx
+++ b/src/MEDLoader/MEDFileMesh.hxx
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2014  CEA/DEN, EDF R&D
+// Copyright (C) 2007-2021  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
@@ -23,26 +23,33 @@
 
 #include "MEDLoaderDefines.hxx"
 #include "MEDFileMeshLL.hxx"
-#include "MEDFileUtilities.hxx"
+#include "MEDFileUtilities.txx"
+#include "MEDCouplingPartDefinition.hxx"
 #include "MEDFileMeshReadSelector.hxx"
+#include "MEDFileJoint.hxx"
+#include "MEDFileEquivalence.hxx"
 
 #include <map>
 #include <list>
 
-namespace ParaMEDMEM
+namespace MEDCoupling
 {
   class MEDFileFieldGlobsReal;
   class MEDFileField1TSStructItem;
 
-  class MEDFileMesh : public RefCountObject, public MEDFileWritable
+  class MEDFileMesh : public RefCountObject, public MEDFileWritableStandAlone
   {
   public:
     MEDLOADER_EXPORT static MEDFileMesh *New(const std::string& fileName, MEDFileMeshReadSelector *mrs=0);
-    MEDLOADER_EXPORT static MEDFileMesh *New(const std::string& fileName, const std::string& mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileMesh *New(med_idt fid, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileMesh *New(DataArrayByte *db) { return BuildFromMemoryChunk<MEDFileMesh>(db); }
+    MEDLOADER_EXPORT static MEDFileMesh *New(const std::string& fileName, const std::string& mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0, MEDFileJoints* joints=0);
+    MEDLOADER_EXPORT static MEDFileMesh *New(med_idt fid, const std::string& mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0, MEDFileJoints* joints=0);
+    MEDLOADER_EXPORT void writeLL(med_idt fid) const;
     MEDLOADER_EXPORT std::size_t getHeapMemorySizeWithoutChildren() const;
-    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildren() const;
+    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
     MEDLOADER_EXPORT virtual MEDFileMesh *createNewEmpty() const = 0;
-    MEDLOADER_EXPORT virtual MEDFileMesh *deepCpy() const = 0;
+    MEDLOADER_EXPORT virtual MEDFileMesh *deepCopy() const = 0;
     MEDLOADER_EXPORT virtual MEDFileMesh *shallowCpy() const = 0;
     MEDLOADER_EXPORT virtual bool isEqual(const MEDFileMesh *other, double eps, std::string& what) const;
     MEDLOADER_EXPORT virtual void clearNonDiscrAttributes() const;
@@ -60,122 +67,172 @@ namespace ParaMEDMEM
     MEDLOADER_EXPORT int getIteration() const { return _iteration; }
     MEDLOADER_EXPORT void setTimeValue(double time) { _time=time; }
     MEDLOADER_EXPORT void setTime(int dt, int it, double time) { _time=time; _iteration=dt; _order=it; }
-    MEDLOADER_EXPORT double getTime(int& dt, int& it) { dt=_iteration; it=_order; return _time; }
+    MEDLOADER_EXPORT double getTime(int& dt, int& it) const { dt=_iteration; it=_order; return _time; }
     MEDLOADER_EXPORT double getTimeValue() const { return _time; }
     MEDLOADER_EXPORT void setTimeUnit(const std::string& unit) { _dt_unit=unit; }
     MEDLOADER_EXPORT std::string getTimeUnit() const { return _dt_unit; }
+    MEDLOADER_EXPORT void setAxisType(MEDCouplingAxisType at) { _axis_type=at; }
+    MEDLOADER_EXPORT MEDCouplingAxisType getAxisType() const { return _axis_type; }
     MEDLOADER_EXPORT std::vector<INTERP_KERNEL::NormalizedCellType> getAllGeoTypes() const;
-    MEDLOADER_EXPORT virtual int getNumberOfNodes() const = 0;
+    MEDLOADER_EXPORT virtual mcIdType getNumberOfNodes() const = 0;
+    MEDLOADER_EXPORT virtual mcIdType getNumberOfCellsAtLevel(int meshDimRelToMaxExt) const = 0;
     MEDLOADER_EXPORT virtual bool hasImplicitPart() const = 0;
-    MEDLOADER_EXPORT virtual int buildImplicitPartIfAny(INTERP_KERNEL::NormalizedCellType gt) const = 0;
+    MEDLOADER_EXPORT virtual mcIdType buildImplicitPartIfAny(INTERP_KERNEL::NormalizedCellType gt) const = 0;
     MEDLOADER_EXPORT virtual void releaseImplicitPartIfAny() const = 0;
     MEDLOADER_EXPORT virtual std::vector<INTERP_KERNEL::NormalizedCellType> getGeoTypesAtLevel(int meshDimRelToMax) const = 0;
+    MEDLOADER_EXPORT virtual mcIdType getNumberOfCellsWithType(INTERP_KERNEL::NormalizedCellType ct) const = 0;
     MEDLOADER_EXPORT virtual std::vector<int> getNonEmptyLevels() const = 0;
     MEDLOADER_EXPORT virtual std::vector<int> getNonEmptyLevelsExt() const = 0;
     MEDLOADER_EXPORT virtual std::vector<int> getFamArrNonEmptyLevelsExt() const = 0;
     MEDLOADER_EXPORT virtual std::vector<int> getNumArrNonEmptyLevelsExt() const = 0;
     MEDLOADER_EXPORT virtual std::vector<int> getNameArrNonEmptyLevelsExt() const = 0;
-    MEDLOADER_EXPORT virtual void write(const std::string& fileName, int mode) const;
-    MEDLOADER_EXPORT virtual void write(med_idt fid) const;
-    MEDLOADER_EXPORT virtual int getSizeAtLevel(int meshDimRelToMaxExt) const = 0;
-    MEDLOADER_EXPORT virtual MEDCouplingMesh *getGenMeshAtLevel(int meshDimRelToMax, bool renum=false) const = 0;
-    MEDLOADER_EXPORT virtual std::vector<int> getDistributionOfTypes(int meshDimRelToMax) const;
+    MEDLOADER_EXPORT virtual mcIdType getSizeAtLevel(int meshDimRelToMaxExt) const = 0;
+    MEDLOADER_EXPORT virtual MEDCouplingMesh *getMeshAtLevel(int meshDimRelToMax, bool renum=false) const = 0;
+    MEDLOADER_EXPORT virtual std::vector<mcIdType> getDistributionOfTypes(int meshDimRelToMax) const;
     MEDLOADER_EXPORT virtual void whichAreNodesFetched(const MEDFileField1TSStructItem& st, const MEDFileFieldGlobsReal *globs, std::vector<bool>& nodesFetched) const = 0;
+    MEDLOADER_EXPORT virtual MEDFileMesh *cartesianize() const = 0;
+    MEDLOADER_EXPORT virtual bool presenceOfStructureElements() const = 0;
+    MEDLOADER_EXPORT virtual void killStructureElements() { }
     //
     MEDLOADER_EXPORT bool areFamsEqual(const MEDFileMesh *other, std::string& what) const;
     MEDLOADER_EXPORT bool areGrpsEqual(const MEDFileMesh *other, std::string& what) const;
     MEDLOADER_EXPORT bool existsGroup(const std::string& groupName) const;
-    MEDLOADER_EXPORT bool existsFamily(int famId) const;
+    MEDLOADER_EXPORT bool existsFamily(mcIdType famId) const;
     MEDLOADER_EXPORT bool existsFamily(const std::string& familyName) const;
-    MEDLOADER_EXPORT void setFamilyId(const std::string& familyName, int id);
-    MEDLOADER_EXPORT void setFamilyIdUnique(const std::string& familyName, int id);
-    MEDLOADER_EXPORT virtual void addFamily(const std::string& familyName, int id);
+    MEDLOADER_EXPORT void setFamilyId(const std::string& familyName, mcIdType id);
+    MEDLOADER_EXPORT void setFamilyIdUnique(const std::string& familyName, mcIdType id);
+    MEDLOADER_EXPORT virtual void addFamily(const std::string& familyName, mcIdType id);
     MEDLOADER_EXPORT virtual void createGroupOnAll(int meshDimRelToMaxExt, const std::string& groupName);
-    MEDLOADER_EXPORT virtual bool keepFamIdsOnlyOnLevs(const std::vector<int>& famIds, const std::vector<int>& levs);
+    MEDLOADER_EXPORT virtual bool keepFamIdsOnlyOnLevs(const std::vector<mcIdType>& famIds, const std::vector<int>& levs);
     MEDLOADER_EXPORT void addFamilyOnGrp(const std::string& grpName, const std::string& famName);
-    MEDLOADER_EXPORT std::string findOrCreateAndGiveFamilyWithId(int id, bool& created);
-    MEDLOADER_EXPORT void setFamilyInfo(const std::map<std::string,int>& info);
+    MEDLOADER_EXPORT std::string findOrCreateAndGiveFamilyWithId(mcIdType id, bool& created);
+    MEDLOADER_EXPORT void setFamilyInfo(const std::map<std::string,mcIdType>& info);
     MEDLOADER_EXPORT void setGroupInfo(const std::map<std::string, std::vector<std::string> >&info);
     MEDLOADER_EXPORT void copyFamGrpMapsFrom(const MEDFileMesh& other);
     MEDLOADER_EXPORT void clearGrpMap();
     MEDLOADER_EXPORT void clearFamMap();
     MEDLOADER_EXPORT void clearFamGrpMaps();
-    MEDLOADER_EXPORT const std::map<std::string,int>& getFamilyInfo() const { return _families; }
+    MEDLOADER_EXPORT const std::map<std::string,mcIdType>& getFamilyInfo() const { return _families; }
     MEDLOADER_EXPORT const std::map<std::string, std::vector<std::string> >& getGroupInfo() const { return _groups; }
     MEDLOADER_EXPORT std::vector<std::string> getFamiliesOnGroup(const std::string& name) const;
     MEDLOADER_EXPORT std::vector<std::string> getFamiliesOnGroups(const std::vector<std::string>& grps) const;
-    MEDLOADER_EXPORT std::vector<int> getFamiliesIdsOnGroup(const std::string& name) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getFamiliesIdsOnGroup(const std::string& name) const;
     MEDLOADER_EXPORT void setFamiliesOnGroup(const std::string& name, const std::vector<std::string>& fams);
-    MEDLOADER_EXPORT void setFamiliesIdsOnGroup(const std::string& name, const std::vector<int>& famIds);
+    MEDLOADER_EXPORT void setFamiliesIdsOnGroup(const std::string& name, const std::vector<mcIdType>& famIds);
     MEDLOADER_EXPORT std::vector<std::string> getGroupsOnFamily(const std::string& name) const;
     MEDLOADER_EXPORT void setGroupsOnFamily(const std::string& famName, const std::vector<std::string>& grps);
     MEDLOADER_EXPORT std::vector<std::string> getGroupsNames() const;
     MEDLOADER_EXPORT std::vector<std::string> getFamiliesNames() const;
+    MEDLOADER_EXPORT std::vector<std::string> getGroupsOnSpecifiedLev(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getGrpNonEmptyLevelsExt(const std::string& grp) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getGrpNonEmptyLevels(const std::string& grp) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getGrpsNonEmptyLevels(const std::vector<std::string>& grps) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getGrpsNonEmptyLevelsExt(const std::vector<std::string>& grps) const;
+    MEDLOADER_EXPORT virtual std::vector<mcIdType> getFamsNonEmptyLevels(const std::vector<std::string>& fams) const = 0;
+    MEDLOADER_EXPORT virtual std::vector<mcIdType> getFamsNonEmptyLevelsExt(const std::vector<std::string>& fams) const = 0;
+    MEDLOADER_EXPORT std::vector<mcIdType> getFamNonEmptyLevels(const std::string& fam) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getFamNonEmptyLevelsExt(const std::string& fam) const;
+    MEDLOADER_EXPORT std::vector<std::string> getFamiliesNamesWithFilePointOfView() const;
+    MEDLOADER_EXPORT static std::string GetMagicFamilyStr();
     MEDLOADER_EXPORT void assignFamilyNameWithGroupName();
     MEDLOADER_EXPORT std::vector<std::string> removeEmptyGroups();
+    MEDLOADER_EXPORT void removeGroupAtLevel(int meshDimRelToMaxExt, const std::string& name);
     MEDLOADER_EXPORT void removeGroup(const std::string& name);
     MEDLOADER_EXPORT void removeFamily(const std::string& name);
     MEDLOADER_EXPORT std::vector<std::string> removeOrphanGroups();
     MEDLOADER_EXPORT std::vector<std::string> removeOrphanFamilies();
+    MEDLOADER_EXPORT void removeFamiliesReferedByNoGroups();
+    MEDLOADER_EXPORT void rearrangeFamilies();
+    MEDLOADER_EXPORT void zipFamilies();
+    MEDLOADER_EXPORT void checkOrphanFamilyZero() const;
     MEDLOADER_EXPORT void changeGroupName(const std::string& oldName, const std::string& newName);
     MEDLOADER_EXPORT void changeFamilyName(const std::string& oldName, const std::string& newName);
-    MEDLOADER_EXPORT void changeFamilyId(int oldId, int newId);
+    MEDLOADER_EXPORT void changeFamilyId(mcIdType oldId, mcIdType newId);
     MEDLOADER_EXPORT void changeAllGroupsContainingFamily(const std::string& familyNameToChange, const std::vector<std::string>& newFamiliesNames);
-    MEDLOADER_EXPORT int getFamilyId(const std::string& name) const;
-    MEDLOADER_EXPORT int getMaxAbsFamilyId() const;
-    MEDLOADER_EXPORT int getMaxFamilyId() const;
-    MEDLOADER_EXPORT int getMinFamilyId() const;
-    MEDLOADER_EXPORT int getTheMaxAbsFamilyId() const;
-    MEDLOADER_EXPORT int getTheMaxFamilyId() const;
-    MEDLOADER_EXPORT int getTheMinFamilyId() const;
-    MEDLOADER_EXPORT virtual int getMaxAbsFamilyIdInArrays() const = 0;
-    MEDLOADER_EXPORT virtual int getMaxFamilyIdInArrays() const = 0;
-    MEDLOADER_EXPORT virtual int getMinFamilyIdInArrays() const = 0;
-    MEDLOADER_EXPORT DataArrayInt *getAllFamiliesIdsReferenced() const;
-    MEDLOADER_EXPORT DataArrayInt *computeAllFamilyIdsInUse() const;
-    MEDLOADER_EXPORT std::vector<int> getFamiliesIds(const std::vector<std::string>& famNames) const;
-    MEDLOADER_EXPORT std::string getFamilyNameGivenId(int id) const;
+    MEDLOADER_EXPORT mcIdType getFamilyId(const std::string& name) const;
+    MEDLOADER_EXPORT mcIdType getMaxAbsFamilyId() const;
+    MEDLOADER_EXPORT mcIdType getMaxFamilyId() const;
+    MEDLOADER_EXPORT mcIdType getMinFamilyId() const;
+    MEDLOADER_EXPORT mcIdType getTheMaxAbsFamilyId() const;
+    MEDLOADER_EXPORT mcIdType getTheMaxFamilyId() const;
+    MEDLOADER_EXPORT mcIdType getTheMinFamilyId() const;
+    MEDLOADER_EXPORT virtual mcIdType getMaxAbsFamilyIdInArrays() const = 0;
+    MEDLOADER_EXPORT virtual mcIdType getMaxFamilyIdInArrays() const = 0;
+    MEDLOADER_EXPORT virtual mcIdType getMinFamilyIdInArrays() const = 0;
+    MEDLOADER_EXPORT DataArrayIdType *getAllFamiliesIdsReferenced() const;
+    MEDLOADER_EXPORT DataArrayIdType *computeAllFamilyIdsInUse() const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getFamiliesIds(const std::vector<std::string>& famNames) const;
+    MEDLOADER_EXPORT std::string getFamilyNameGivenId(mcIdType id) const;
     MEDLOADER_EXPORT bool ensureDifferentFamIdsPerLevel();
     MEDLOADER_EXPORT void normalizeFamIdsTrio();
     MEDLOADER_EXPORT void normalizeFamIdsMEDFile();
     MEDLOADER_EXPORT virtual int getMeshDimension() const = 0;
+    MEDLOADER_EXPORT virtual int getSpaceDimension() const = 0;
     MEDLOADER_EXPORT virtual std::string simpleRepr() const;
     MEDLOADER_EXPORT virtual std::string advancedRepr() const = 0;
     //
-    MEDLOADER_EXPORT virtual void setGroupsAtLevel(int meshDimRelToMaxExt, const std::vector<const DataArrayInt *>& grps, bool renum=false);
-    MEDLOADER_EXPORT virtual void setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayInt *famArr) = 0;
-    MEDLOADER_EXPORT virtual void setRenumFieldArr(int meshDimRelToMaxExt, DataArrayInt *renumArr) = 0;
+    MEDLOADER_EXPORT virtual void setGroupsAtLevel(int meshDimRelToMaxExt, const std::vector<const DataArrayIdType *>& grps, bool renum=false);
+    MEDLOADER_EXPORT virtual void setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayIdType *famArr) = 0;
+    MEDLOADER_EXPORT virtual void setRenumFieldArr(int meshDimRelToMaxExt, DataArrayIdType *renumArr) = 0;
     MEDLOADER_EXPORT virtual void setNameFieldAtLevel(int meshDimRelToMaxExt, DataArrayAsciiChar *nameArr) = 0;
-    MEDLOADER_EXPORT virtual const DataArrayInt *getFamilyFieldAtLevel(int meshDimRelToMaxExt) const = 0;
-    MEDLOADER_EXPORT virtual const DataArrayInt *getNumberFieldAtLevel(int meshDimRelToMaxExt) const = 0;
-    MEDLOADER_EXPORT virtual const DataArrayInt *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const = 0;
+    MEDLOADER_EXPORT virtual void setGlobalNumFieldAtLevel(int meshDimRelToMaxExt, DataArrayIdType *globalNumArr) = 0;
+    MEDLOADER_EXPORT virtual void addNodeGroup(const DataArrayIdType *ids) = 0;
+    MEDLOADER_EXPORT virtual void addGroup(int meshDimRelToMaxExt, const DataArrayIdType *ids) = 0;
+    MEDLOADER_EXPORT virtual const DataArrayIdType *getFamilyFieldAtLevel(int meshDimRelToMaxExt) const = 0;
+    MEDLOADER_EXPORT virtual DataArrayIdType *getFamilyFieldAtLevel(int meshDimRelToMaxExt) = 0;
+    MEDLOADER_EXPORT DataArrayIdType *getOrCreateAndGetFamilyFieldAtLevel(int meshDimRelToMaxExt);
+    MEDLOADER_EXPORT virtual const DataArrayIdType *getNumberFieldAtLevel(int meshDimRelToMaxExt) const = 0;
+    MEDLOADER_EXPORT virtual const DataArrayIdType *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const = 0;
     MEDLOADER_EXPORT virtual const DataArrayAsciiChar *getNameFieldAtLevel(int meshDimRelToMaxExt) const = 0;
-    MEDLOADER_EXPORT virtual DataArrayInt *getFamiliesArr(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const = 0;
-    MEDLOADER_EXPORT virtual DataArrayInt *getGroupsArr(int meshDimRelToMaxExt, const std::vector<std::string>& grps, bool renum=false) const;
-    MEDLOADER_EXPORT virtual DataArrayInt *getGroupArr(int meshDimRelToMaxExt, const std::string& grp, bool renum=false) const;
-    MEDLOADER_EXPORT virtual DataArrayInt *getFamilyArr(int meshDimRelToMaxExt, const std::string& fam, bool renum=false) const;
-    MEDLOADER_EXPORT virtual DataArrayInt *getNodeGroupArr(const std::string& grp, bool renum=false) const;
-    MEDLOADER_EXPORT virtual DataArrayInt *getNodeGroupsArr(const std::vector<std::string>& grps, bool renum=false) const;
-    MEDLOADER_EXPORT virtual DataArrayInt *getNodeFamilyArr(const std::string& fam, bool renum=false) const;
-    MEDLOADER_EXPORT virtual DataArrayInt *getNodeFamiliesArr(const std::vector<std::string>& fams, bool renum=false) const;
+    MEDLOADER_EXPORT virtual MCAuto<DataArrayIdType> getGlobalNumFieldAtLevel(int meshDimRelToMaxExt) const = 0;
+    MEDLOADER_EXPORT virtual DataArrayIdType *getFamiliesArr(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const = 0;
+    MEDLOADER_EXPORT virtual DataArrayIdType *getGroupsArr(int meshDimRelToMaxExt, const std::vector<std::string>& grps, bool renum=false) const;
+    MEDLOADER_EXPORT virtual DataArrayIdType *getGroupArr(int meshDimRelToMaxExt, const std::string& grp, bool renum=false) const;
+    MEDLOADER_EXPORT virtual DataArrayIdType *getFamilyArr(int meshDimRelToMaxExt, const std::string& fam, bool renum=false) const;
+    MEDLOADER_EXPORT virtual DataArrayIdType *getNodeGroupArr(const std::string& grp, bool renum=false) const;
+    MEDLOADER_EXPORT virtual DataArrayIdType *getNodeGroupsArr(const std::vector<std::string>& grps, bool renum=false) const;
+    MEDLOADER_EXPORT virtual DataArrayIdType *getNodeFamilyArr(const std::string& fam, bool renum=false) const;
+    MEDLOADER_EXPORT virtual DataArrayIdType *getNodeFamiliesArr(const std::vector<std::string>& fams, bool renum=false) const;
     // tools
-    MEDLOADER_EXPORT virtual bool unPolyze(std::vector<int>& oldCode, std::vector<int>& newCode, DataArrayInt *& o2nRenumCell) = 0;
+    MEDLOADER_EXPORT virtual bool unPolyze(std::vector<mcIdType>& oldCode, std::vector<mcIdType>& newCode, DataArrayIdType *& o2nRenumCell) = 0;
+    MEDLOADER_EXPORT int getNumberOfJoints() const;
+    MEDLOADER_EXPORT MEDFileJoints *getJoints() const;
+    MEDLOADER_EXPORT void setJoints( MEDFileJoints* joints );
+    MEDFileEquivalences *getEquivalences() { return _equiv; }
+    const MEDFileEquivalences *getEquivalences() const { return _equiv; }
+    void killEquivalences() { _equiv=(MEDFileEquivalences *)0; }
+    void initializeEquivalences() { _equiv=MEDFileEquivalences::New(this); }
+    MEDLOADER_EXPORT static INTERP_KERNEL::NormalizedCellType ConvertFromMEDFileGeoType(med_geometry_type geoType);
+    static TypeOfField ConvertFromMEDFileEntity(med_entity_type etype);
   protected:
     MEDFileMesh();
     //! protected because no way in MED file API to specify this name
     void setUnivName(const std::string& name) { _univ_name=name; }
     void addFamilyOnAllGroupsHaving(const std::string& famName, const std::string& otherFamName);
-    virtual void writeLL(med_idt fid) const = 0;
     void dealWithTinyInfo(const MEDCouplingMesh *m);
     virtual void synchronizeTinyInfoOnLeaves() const = 0;
     void getFamilyRepr(std::ostream& oss) const;
-    virtual void appendFamilyEntries(const DataArrayInt *famIds, const std::vector< std::vector<int> >& fidsOfGrps, const std::vector<std::string>& grpNames);
-    virtual void changeFamilyIdArr(int oldId, int newId) = 0;
-    static void TranslateFamilyIds(int offset, DataArrayInt *famArr, std::vector< std::vector<int> >& famIdsPerGrp);
+    virtual void appendFamilyEntries(const DataArrayIdType *famIds, const std::vector< std::vector<mcIdType> >& fidsOfGrps, const std::vector<std::string>& grpNames);
+    virtual void changeFamilyIdArr(mcIdType oldId, mcIdType newId) = 0;
+    virtual std::list< MCAuto<DataArrayIdType> > getAllNonNullFamilyIds() const = 0;
+    virtual void loadLL(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs) = 0;
+    void loadLLWithAdditionalItems(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);
+    void addGroupUnderground(bool isNodeGroup, const DataArrayIdType *ids, DataArrayIdType *famArr);
+    static void TranslateFamilyIds(mcIdType offset, DataArrayIdType *famArr, std::vector< std::vector<mcIdType> >& famIdsPerGrp);
     static void ChangeAllGroupsContainingFamily(std::map<std::string, std::vector<std::string> >& groups, const std::string& familyNameToChange, const std::vector<std::string>& newFamiliesNames);
-    static std::string FindOrCreateAndGiveFamilyWithId(std::map<std::string,int>& families, int id, bool& created);
+    static std::string FindOrCreateAndGiveFamilyWithId(std::map<std::string,mcIdType>& families, mcIdType id, bool& created);
     static std::string CreateNameNotIn(const std::string& nameTry, const std::vector<std::string>& namesToAvoid);
-    static int PutInThirdComponentOfCodeOffset(std::vector<int>& code, int strt);
+    static mcIdType PutInThirdComponentOfCodeOffset(std::vector<mcIdType>& code, mcIdType strt);
+    void writeJoints(med_idt fid) const;
+    void loadJointsFromFile(med_idt fid, MEDFileJoints *toUseInstedOfReading=0);
+    void loadEquivalences(med_idt fid);
+    void deepCpyEquivalences(const MEDFileMesh& other);
+    bool areEquivalencesEqual(const MEDFileMesh *other, std::string& what) const;
+    void getEquivalencesRepr(std::ostream& oss) const;
+    void checkCartesian() const;
+    void checkNoGroupClash(const DataArrayIdType *famArr, const std::string& grpName) const;
+  private:
+    virtual void writeMeshLL(med_idt fid) const = 0;
   protected:
     int _order;
     int _iteration;
@@ -186,89 +243,112 @@ namespace ParaMEDMEM
     mutable std::string _univ_name;
     bool _univ_wr_status;
     std::string _desc_name;
+    MEDCouplingAxisType _axis_type;
+    MCAuto<MEDFileJoints> _joints;
+    MCAuto<MEDFileEquivalences> _equiv;
   protected:
     std::map<std::string, std::vector<std::string> > _groups;
-    std::map<std::string,int> _families;
+    std::map<std::string,mcIdType> _families;
   public:
     MEDLOADER_EXPORT static const char DFT_FAM_NAME[];
   };
 
+  class MEDCouplingMappedExtrudedMesh;
+  
   class MEDFileUMesh : public MEDFileMesh
   {
     friend class MEDFileMesh;
   public:
     MEDLOADER_EXPORT static MEDFileUMesh *New(const std::string& fileName, const std::string& mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileUMesh *New(med_idt fid, const std::string& mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
     MEDLOADER_EXPORT static MEDFileUMesh *New(const std::string& fileName, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileUMesh *New(med_idt fid, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileUMesh *New(DataArrayByte *db) { return BuildFromMemoryChunk<MEDFileUMesh>(db); }
+    MEDLOADER_EXPORT static MEDFileUMesh *New(const MEDCouplingMappedExtrudedMesh *mem);
     MEDLOADER_EXPORT static MEDFileUMesh *New();
+    MEDLOADER_EXPORT std::string getClassName() const override { return std::string("MEDFileUMesh"); }
+    MEDLOADER_EXPORT static MEDFileUMesh *LoadPartOf(const std::string& fileName, const std::string& mName, const std::vector<INTERP_KERNEL::NormalizedCellType>& types, const std::vector<mcIdType>& slicPerTyp, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileUMesh *LoadPartOf(med_idt fid, const std::string& mName, const std::vector<INTERP_KERNEL::NormalizedCellType>& types, const std::vector<mcIdType>& slicPerTyp, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static void LoadPartCoords(const std::string& fileName, const std::string& mName, int dt, int it, const std::vector<std::string>& infosOnComp, mcIdType startNodeId, mcIdType stopNodeId,
+MCAuto<DataArrayDouble>& coords, MCAuto<PartDefinition>& partCoords, MCAuto<DataArrayIdType>& famCoords, MCAuto<DataArrayIdType>& numCoords, MCAuto<DataArrayAsciiChar>& nameCoords);
+    MEDLOADER_EXPORT static const char *GetSpeStr4ExtMesh() { return SPE_FAM_STR_EXTRUDED_MESH; }
     MEDLOADER_EXPORT std::size_t getHeapMemorySizeWithoutChildren() const;
-    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildren() const;
+    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
     MEDLOADER_EXPORT MEDFileMesh *createNewEmpty() const;
-    MEDLOADER_EXPORT MEDFileMesh *deepCpy() const;
-    MEDLOADER_EXPORT MEDFileMesh *shallowCpy() const;
+    MEDLOADER_EXPORT MEDFileUMesh *deepCopy() const;
+    MEDLOADER_EXPORT MEDFileUMesh *shallowCpy() const;
     MEDLOADER_EXPORT bool isEqual(const MEDFileMesh *other, double eps, std::string& what) const;
+    MEDLOADER_EXPORT void checkConsistency() const;
+    MEDLOADER_EXPORT void checkSMESHConsistency() const;
+    MEDLOADER_EXPORT void clearNodeAndCellNumbers();
     MEDLOADER_EXPORT void clearNonDiscrAttributes() const;
     MEDLOADER_EXPORT void setName(const std::string& name);
-    MEDLOADER_EXPORT ~MEDFileUMesh();
+    MEDLOADER_EXPORT const std::vector< MCAuto<MEDFileEltStruct4Mesh> >& getAccessOfUndergroundEltStrs() const { return _elt_str; }
     //
-    MEDLOADER_EXPORT int getMaxAbsFamilyIdInArrays() const;
-    MEDLOADER_EXPORT int getMaxFamilyIdInArrays() const;
-    MEDLOADER_EXPORT int getMinFamilyIdInArrays() const;
+    MEDLOADER_EXPORT mcIdType getMaxAbsFamilyIdInArrays() const;
+    MEDLOADER_EXPORT mcIdType getMaxFamilyIdInArrays() const;
+    MEDLOADER_EXPORT mcIdType getMinFamilyIdInArrays() const;
     MEDLOADER_EXPORT int getMeshDimension() const;
     MEDLOADER_EXPORT int getSpaceDimension() const;
     MEDLOADER_EXPORT std::string simpleRepr() const;
     MEDLOADER_EXPORT std::string advancedRepr() const;
-    MEDLOADER_EXPORT int getSizeAtLevel(int meshDimRelToMaxExt) const;
-    MEDLOADER_EXPORT const DataArrayInt *getFamilyFieldAtLevel(int meshDimRelToMaxExt) const;
-    MEDLOADER_EXPORT const DataArrayInt *getNumberFieldAtLevel(int meshDimRelToMaxExt) const;
-    MEDLOADER_EXPORT const DataArrayInt *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT mcIdType getSizeAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT const DataArrayIdType *getFamilyFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT DataArrayIdType *getFamilyFieldAtLevel(int meshDimRelToMaxExt);
+    MEDLOADER_EXPORT const DataArrayIdType *getNumberFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT const DataArrayIdType *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const;
     MEDLOADER_EXPORT const DataArrayAsciiChar *getNameFieldAtLevel(int meshDimRelToMaxExt) const;
-    MEDLOADER_EXPORT int getNumberOfNodes() const;
+    MEDLOADER_EXPORT MCAuto<DataArrayIdType> getGlobalNumFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT const PartDefinition *getPartDefAtLevel(int meshDimRelToMaxExt, INTERP_KERNEL::NormalizedCellType gt=INTERP_KERNEL::NORM_ERROR) const;
+    MEDLOADER_EXPORT mcIdType getNumberOfNodes() const;
+    MEDLOADER_EXPORT mcIdType getNumberOfCellsAtLevel(int meshDimRelToMaxExt) const;
     MEDLOADER_EXPORT bool hasImplicitPart() const;
-    MEDLOADER_EXPORT int buildImplicitPartIfAny(INTERP_KERNEL::NormalizedCellType gt) const;
+    MEDLOADER_EXPORT mcIdType buildImplicitPartIfAny(INTERP_KERNEL::NormalizedCellType gt) const;
     MEDLOADER_EXPORT void releaseImplicitPartIfAny() const;
     MEDLOADER_EXPORT std::vector<INTERP_KERNEL::NormalizedCellType> getGeoTypesAtLevel(int meshDimRelToMax) const;
+    MEDLOADER_EXPORT mcIdType getNumberOfCellsWithType(INTERP_KERNEL::NormalizedCellType ct) const;
     MEDLOADER_EXPORT void whichAreNodesFetched(const MEDFileField1TSStructItem& st, const MEDFileFieldGlobsReal *globs, std::vector<bool>& nodesFetched) const;
+    MEDLOADER_EXPORT MEDFileMesh *cartesianize() const;
+    MEDLOADER_EXPORT bool presenceOfStructureElements() const;
+    MEDLOADER_EXPORT void killStructureElements();
     MEDLOADER_EXPORT std::vector<int> getNonEmptyLevels() const;
     MEDLOADER_EXPORT std::vector<int> getNonEmptyLevelsExt() const;
     MEDLOADER_EXPORT std::vector<int> getFamArrNonEmptyLevelsExt() const;
     MEDLOADER_EXPORT std::vector<int> getNumArrNonEmptyLevelsExt() const;
     MEDLOADER_EXPORT std::vector<int> getNameArrNonEmptyLevelsExt() const;
-    MEDLOADER_EXPORT std::vector<int> getGrpNonEmptyLevels(const std::string& grp) const;
-    MEDLOADER_EXPORT std::vector<int> getGrpNonEmptyLevelsExt(const std::string& grp) const;
-    MEDLOADER_EXPORT std::vector<int> getFamNonEmptyLevels(const std::string& fam) const;
-    MEDLOADER_EXPORT std::vector<int> getFamNonEmptyLevelsExt(const std::string& fam) const;
-    MEDLOADER_EXPORT std::vector<int> getGrpsNonEmptyLevels(const std::vector<std::string>& grps) const;
-    MEDLOADER_EXPORT std::vector<int> getGrpsNonEmptyLevelsExt(const std::vector<std::string>& grps) const;
-    MEDLOADER_EXPORT std::vector<int> getFamsNonEmptyLevels(const std::vector<std::string>& fams) const;
-    MEDLOADER_EXPORT std::vector<int> getFamsNonEmptyLevelsExt(const std::vector<std::string>& fams) const;
-    MEDLOADER_EXPORT std::vector<std::string> getGroupsOnSpecifiedLev(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getFamsNonEmptyLevels(const std::vector<std::string>& fams) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getFamsNonEmptyLevelsExt(const std::vector<std::string>& fams) const;
     MEDLOADER_EXPORT DataArrayDouble *getCoords() const;
     MEDLOADER_EXPORT MEDCouplingUMesh *getGroup(int meshDimRelToMaxExt, const std::string& grp, bool renum=false) const;
     MEDLOADER_EXPORT MEDCouplingUMesh *getGroups(int meshDimRelToMaxExt, const std::vector<std::string>& grps, bool renum=false) const;
     MEDLOADER_EXPORT MEDCouplingUMesh *getFamily(int meshDimRelToMaxExt, const std::string& fam, bool renum=false) const;
     MEDLOADER_EXPORT MEDCouplingUMesh *getFamilies(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const;
-    MEDLOADER_EXPORT DataArrayInt *getFamiliesArr(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const;
-    MEDLOADER_EXPORT MEDCouplingUMesh *getMeshAtLevel(int meshDimRelToMaxExt, bool renum=false) const;
-    MEDLOADER_EXPORT MEDCouplingMesh *getGenMeshAtLevel(int meshDimRelToMax, bool renum=false) const;
-    MEDLOADER_EXPORT std::vector<int> getDistributionOfTypes(int meshDimRelToMax) const;
+    MEDLOADER_EXPORT DataArrayIdType *getFamiliesArr(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const;
+    MEDLOADER_EXPORT MEDCouplingUMesh *getMeshAtLevel(int meshDimRelToMax, bool renum=false) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getDistributionOfTypes(int meshDimRelToMax) const;
+    MEDLOADER_EXPORT std::vector< std::pair<int,mcIdType> > getAllDistributionOfTypes() const;
     MEDLOADER_EXPORT MEDCouplingUMesh *getLevel0Mesh(bool renum=false) const;
     MEDLOADER_EXPORT MEDCouplingUMesh *getLevelM1Mesh(bool renum=false) const;
     MEDLOADER_EXPORT MEDCouplingUMesh *getLevelM2Mesh(bool renum=false) const;
     MEDLOADER_EXPORT MEDCouplingUMesh *getLevelM3Mesh(bool renum=false) const;
     MEDLOADER_EXPORT void forceComputationOfParts() const;
+    MEDLOADER_EXPORT void computeRevNum() const;
     MEDLOADER_EXPORT std::vector<MEDCoupling1GTUMesh *> getDirectUndergroundSingleGeoTypeMeshes(int meshDimRelToMax) const;
     MEDLOADER_EXPORT MEDCoupling1GTUMesh *getDirectUndergroundSingleGeoTypeMesh(INTERP_KERNEL::NormalizedCellType gt) const;
-    MEDLOADER_EXPORT DataArrayInt *extractFamilyFieldOnGeoType(INTERP_KERNEL::NormalizedCellType gt) const;
-    MEDLOADER_EXPORT DataArrayInt *extractNumberFieldOnGeoType(INTERP_KERNEL::NormalizedCellType gt) const;
+    MEDLOADER_EXPORT DataArrayIdType *extractFamilyFieldOnGeoType(INTERP_KERNEL::NormalizedCellType gt) const;
+    MEDLOADER_EXPORT DataArrayIdType *extractNumberFieldOnGeoType(INTERP_KERNEL::NormalizedCellType gt) const;
+    MEDLOADER_EXPORT int getRelativeLevOnGeoType(INTERP_KERNEL::NormalizedCellType gt) const;
     //
-    MEDLOADER_EXPORT void setFamilyNameAttachedOnId(int id, const std::string& newFamName);
+    MEDLOADER_EXPORT void setFamilyNameAttachedOnId(mcIdType id, const std::string& newFamName);
     MEDLOADER_EXPORT void setCoords(DataArrayDouble *coords);
+    MEDLOADER_EXPORT void setCoordsForced(DataArrayDouble *coords);
     MEDLOADER_EXPORT void eraseGroupsAtLevel(int meshDimRelToMaxExt);
-    MEDLOADER_EXPORT void setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayInt *famArr);
-    MEDLOADER_EXPORT void setRenumFieldArr(int meshDimRelToMaxExt, DataArrayInt *renumArr);
+    MEDLOADER_EXPORT void setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayIdType *famArr);
+    MEDLOADER_EXPORT void setRenumFieldArr(int meshDimRelToMaxExt, DataArrayIdType *renumArr);
     MEDLOADER_EXPORT void setNameFieldAtLevel(int meshDimRelToMaxExt, DataArrayAsciiChar *nameArr);
-    MEDLOADER_EXPORT void addNodeGroup(const DataArrayInt *ids);
-    MEDLOADER_EXPORT void addGroup(int meshDimRelToMaxExt, const DataArrayInt *ids);
+    MEDLOADER_EXPORT void setGlobalNumFieldAtLevel(int meshDimRelToMaxExt, DataArrayIdType *globalNumArr);
+    MEDLOADER_EXPORT void addNodeGroup(const DataArrayIdType *ids);
+    MEDLOADER_EXPORT void addGroup(int meshDimRelToMaxExt, const DataArrayIdType *ids);
     MEDLOADER_EXPORT void removeMeshAtLevel(int meshDimRelToMax);
     MEDLOADER_EXPORT void setMeshAtLevel(int meshDimRelToMax, MEDCoupling1GTUMesh *m);
     MEDLOADER_EXPORT void setMeshAtLevel(int meshDimRelToMax, MEDCouplingUMesh *m, bool newOrOld=false);
@@ -277,31 +357,51 @@ namespace ParaMEDMEM
     MEDLOADER_EXPORT void setGroupsOnSetMesh(int meshDimRelToMax, const std::vector<const MEDCouplingUMesh *>& ms, bool renum=false);
     MEDLOADER_EXPORT void optimizeFamilies();
     // tools
-    MEDLOADER_EXPORT void duplicateNodesOnM1Group(const std::string& grpNameM1, DataArrayInt *&nodesDuplicated, DataArrayInt *&cellsModified, DataArrayInt *&cellsNotModified);
-    MEDLOADER_EXPORT bool unPolyze(std::vector<int>& oldCode, std::vector<int>& newCode, DataArrayInt *& o2nRenumCell);
-    MEDLOADER_EXPORT DataArrayInt *zipCoords();
+    MEDLOADER_EXPORT void buildInnerBoundaryAlongM1Group(const std::string& grpNameM1, DataArrayIdType *&nodesDuplicated, DataArrayIdType *&cellsModified, DataArrayIdType *&cellsNotModified);
+    MEDLOADER_EXPORT bool unPolyze(std::vector<mcIdType>& oldCode, std::vector<mcIdType>& newCode, DataArrayIdType *& o2nRenumCell);
+    MEDLOADER_EXPORT DataArrayIdType *zipCoords();
+    MEDLOADER_EXPORT DataArrayIdType *computeFetchedNodeIds() const;
+    MEDLOADER_EXPORT DataArrayIdType *deduceNodeSubPartFromCellSubPart(const std::map<int, MCAuto<DataArrayIdType> >& extractDef) const;
+    MEDLOADER_EXPORT MEDFileUMesh *extractPart(const std::map<int, MCAuto<DataArrayIdType> >& extractDef) const;
+    MEDLOADER_EXPORT MEDFileUMesh *buildExtrudedMesh(const MEDCouplingUMesh *m1D, int policy) const;
+    MEDLOADER_EXPORT MEDFileUMesh *linearToQuadratic(int conversionType=0, double eps=1e-12) const;
+    MEDLOADER_EXPORT MEDFileUMesh *quadraticToLinear(double eps=1e-12) const;
+    MEDLOADER_EXPORT MCAuto<MEDFileUMesh> symmetry3DPlane(const double point[3], const double normalVector[3]) const;
+    MEDLOADER_EXPORT static MCAuto<MEDFileUMesh> Aggregate(const std::vector<const MEDFileUMesh *>& meshes);
+    MEDLOADER_EXPORT MEDCouplingMappedExtrudedMesh *convertToExtrudedMesh() const;
+    // serialization
+    MEDLOADER_EXPORT void serialize(std::vector<double>& tinyDouble, std::vector<mcIdType>& tinyInt, std::vector<std::string>& tinyStr,
+                                    std::vector< MCAuto<DataArrayIdType> >& bigArraysI, MCAuto<DataArrayDouble>& bigArrayD);
+    MEDLOADER_EXPORT void unserialize(std::vector<double>& tinyDouble, std::vector<mcIdType>& tinyInt, std::vector<std::string>& tinyStr,
+                                      std::vector< MCAuto<DataArrayIdType> >& bigArraysI, MCAuto<DataArrayDouble>& bigArrayD);
   private:
-    void writeLL(med_idt fid) const;
+    MEDLOADER_EXPORT ~MEDFileUMesh();
+    void writeMeshLL(med_idt fid) const;
     MEDFileUMesh();
     MEDFileUMesh(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);
-    void loadUMeshFromFile(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);
+    void loadPartUMeshFromFile(med_idt fid, const std::string& mName, const std::vector<INTERP_KERNEL::NormalizedCellType>& types, const std::vector<mcIdType>& slicPerTyp, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
+    void loadLL(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);
+    void dispatchLoadedPart(med_idt fid, const MEDFileUMeshL2& loaderl2, const std::string& mName, MEDFileMeshReadSelector *mrs);
     const MEDFileUMeshSplitL1 *getMeshAtLevSafe(int meshDimRelToMaxExt) const;
     MEDFileUMeshSplitL1 *getMeshAtLevSafe(int meshDimRelToMaxExt);
     void checkMeshDimCoherency(int meshDim, int meshDimRelToMax) const;
     DataArrayDouble *checkMultiMesh(const std::vector<const MEDCouplingUMesh *>& ms) const;
-    void computeRevNum() const;
     void synchronizeTinyInfoOnLeaves() const;
-    void changeFamilyIdArr(int oldId, int newId);
-    std::list< MEDCouplingAutoRefCountObjectPtr<DataArrayInt> > getAllNonNullFamilyIds() const;
-    void addGroupUnderground(bool isNodeGroup, const DataArrayInt *ids, DataArrayInt *famArr);
-    MEDCouplingAutoRefCountObjectPtr<MEDFileUMeshSplitL1>& checkAndGiveEntryInSplitL1(int meshDimRelToMax, MEDCouplingPointSet *m);
+    void changeFamilyIdArr(mcIdType oldId, mcIdType newId);
+    std::list< MCAuto<DataArrayIdType> > getAllNonNullFamilyIds() const;
+    MCAuto<MEDFileUMeshSplitL1>& checkAndGiveEntryInSplitL1(int meshDimRelToMax, MEDCouplingPointSet *m);
+  private:
+    static const char SPE_FAM_STR_EXTRUDED_MESH[];
   private:
-    std::vector< MEDCouplingAutoRefCountObjectPtr<MEDFileUMeshSplitL1> > _ms;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayDouble> _coords;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _fam_coords;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _num_coords;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayAsciiChar> _name_coords;
-    mutable MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _rev_num_coords;
+    std::vector< MCAuto<MEDFileUMeshSplitL1> > _ms;   ///< The array of single-dimension constituting meshes, stored in decreasing order (dimRelativeToMax=0,-1,-2, ...)
+    MCAuto<DataArrayDouble> _coords;
+    MCAuto<DataArrayIdType> _fam_coords;              ///< Node family indices
+    MCAuto<DataArrayIdType> _num_coords;
+    MCAuto<DataArrayIdType> _global_num_coords;
+    MCAuto<DataArrayAsciiChar> _name_coords;
+    mutable MCAuto<DataArrayIdType> _rev_num_coords;
+    MCAuto<PartDefinition> _part_coords;
+    std::vector< MCAuto<MEDFileEltStruct4Mesh> > _elt_str;
   };
 
   class MEDFileStructuredMesh : public MEDFileMesh
@@ -309,39 +409,51 @@ namespace ParaMEDMEM
     friend class MEDFileMesh;
   public:
     MEDLOADER_EXPORT std::size_t getHeapMemorySizeWithoutChildren() const;
-    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildren() const;
-    MEDLOADER_EXPORT int getMaxAbsFamilyIdInArrays() const;
-    MEDLOADER_EXPORT int getMaxFamilyIdInArrays() const;
-    MEDLOADER_EXPORT int getMinFamilyIdInArrays() const;
+    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
+    MEDLOADER_EXPORT mcIdType getMaxAbsFamilyIdInArrays() const;
+    MEDLOADER_EXPORT mcIdType getMaxFamilyIdInArrays() const;
+    MEDLOADER_EXPORT mcIdType getMinFamilyIdInArrays() const;
     MEDLOADER_EXPORT bool isEqual(const MEDFileMesh *other, double eps, std::string& what) const;
     MEDLOADER_EXPORT void clearNonDiscrAttributes() const;
-    MEDLOADER_EXPORT DataArrayInt *getFamiliesArr(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const;
-    MEDLOADER_EXPORT const DataArrayInt *getFamilyFieldAtLevel(int meshDimRelToMaxExt) const;
-    MEDLOADER_EXPORT void setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayInt *famArr);
-    MEDLOADER_EXPORT void setRenumFieldArr(int meshDimRelToMaxExt, DataArrayInt *renumArr);
+    MEDLOADER_EXPORT DataArrayIdType *getFamiliesArr(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const;
+    MEDLOADER_EXPORT const DataArrayIdType *getFamilyFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT DataArrayIdType *getFamilyFieldAtLevel(int meshDimRelToMaxExt);
+    MEDLOADER_EXPORT void setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayIdType *famArr);
+    MEDLOADER_EXPORT void setRenumFieldArr(int meshDimRelToMaxExt, DataArrayIdType *renumArr);
     MEDLOADER_EXPORT void setNameFieldAtLevel(int meshDimRelToMaxExt, DataArrayAsciiChar *nameArr);
-    MEDLOADER_EXPORT const DataArrayInt *getNumberFieldAtLevel(int meshDimRelToMaxExt) const;
-    MEDLOADER_EXPORT const DataArrayInt *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT void setGlobalNumFieldAtLevel(int meshDimRelToMaxExt, DataArrayIdType *globalNumArr);
+    MEDLOADER_EXPORT void addNodeGroup(const DataArrayIdType *ids);
+    MEDLOADER_EXPORT void addGroup(int meshDimRelToMaxExt, const DataArrayIdType *ids);
+    MEDLOADER_EXPORT const DataArrayIdType *getNumberFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT const DataArrayIdType *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const;
     MEDLOADER_EXPORT const DataArrayAsciiChar *getNameFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT MCAuto<DataArrayIdType> getGlobalNumFieldAtLevel(int meshDimRelToMaxExt) const;
     MEDLOADER_EXPORT std::vector<int> getNonEmptyLevels() const;
     MEDLOADER_EXPORT std::vector<int> getNonEmptyLevelsExt() const;
     MEDLOADER_EXPORT std::vector<int> getFamArrNonEmptyLevelsExt() const;
     MEDLOADER_EXPORT std::vector<int> getNumArrNonEmptyLevelsExt() const;
     MEDLOADER_EXPORT std::vector<int> getNameArrNonEmptyLevelsExt() const;
-    MEDCouplingMesh *getGenMeshAtLevel(int meshDimRelToMax, bool renum=false) const;
-    MEDLOADER_EXPORT int getSizeAtLevel(int meshDimRelToMaxExt) const;
-    MEDLOADER_EXPORT int getNumberOfNodes() const;
+    MEDLOADER_EXPORT MEDCouplingMesh *getMeshAtLevel(int meshDimRelToMax, bool renum=false) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getFamsNonEmptyLevels(const std::vector<std::string>& fams) const;
+    MEDLOADER_EXPORT std::vector<mcIdType> getFamsNonEmptyLevelsExt(const std::vector<std::string>& fams) const;
+    MEDLOADER_EXPORT mcIdType getSizeAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT mcIdType getNumberOfNodes() const;
+    MEDLOADER_EXPORT mcIdType getNumberOfCellsAtLevel(int meshDimRelToMaxExt) const;
     MEDLOADER_EXPORT bool hasImplicitPart() const;
-    MEDLOADER_EXPORT int buildImplicitPartIfAny(INTERP_KERNEL::NormalizedCellType gt) const;
+    MEDLOADER_EXPORT mcIdType buildImplicitPartIfAny(INTERP_KERNEL::NormalizedCellType gt) const;
     MEDLOADER_EXPORT void releaseImplicitPartIfAny() const;
     MEDLOADER_EXPORT MEDCoupling1SGTUMesh *getImplicitFaceMesh() const;
     MEDLOADER_EXPORT std::vector<INTERP_KERNEL::NormalizedCellType> getGeoTypesAtLevel(int meshDimRelToMax) const;
+    MEDLOADER_EXPORT mcIdType getNumberOfCellsWithType(INTERP_KERNEL::NormalizedCellType ct) const;
     MEDLOADER_EXPORT void whichAreNodesFetched(const MEDFileField1TSStructItem& st, const MEDFileFieldGlobsReal *globs, std::vector<bool>& nodesFetched) const;
+    MEDLOADER_EXPORT bool presenceOfStructureElements() const { return false; }
     MEDLOADER_EXPORT virtual const MEDCouplingStructuredMesh *getStructuredMesh() const = 0;
     // tools
-    MEDLOADER_EXPORT bool unPolyze(std::vector<int>& oldCode, std::vector<int>& newCode, DataArrayInt *& o2nRenumCell);
+    MEDLOADER_EXPORT bool unPolyze(std::vector<mcIdType>& oldCode, std::vector<mcIdType>& newCode, DataArrayIdType *& o2nRenumCell);
   protected:
-    void changeFamilyIdArr(int oldId, int newId);
+    ~MEDFileStructuredMesh() { }
+    void changeFamilyIdArr(mcIdType oldId, mcIdType newId);
+    std::list< MCAuto<DataArrayIdType> > getAllNonNullFamilyIds() const;
     void deepCpyAttributes();
     void loadStrMeshFromFile(MEDFileStrMeshL2 *strm, med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);
     void writeStructuredLL(med_idt fid, const std::string& maa) const;
@@ -350,20 +462,20 @@ namespace ParaMEDMEM
     static med_geometry_type GetGeoTypeFromMeshDim(int meshDim);
   private:
     static void LoadStrMeshDAFromFile(med_idt fid, int meshDim, int dt, int it, const std::string& mName, MEDFileMeshReadSelector *mrs,
-                                      MEDCouplingAutoRefCountObjectPtr<DataArrayInt>& famCells, MEDCouplingAutoRefCountObjectPtr<DataArrayInt>& numCells, MEDCouplingAutoRefCountObjectPtr<DataArrayAsciiChar>& namesCells);
+                                      MCAuto<DataArrayIdType>& famCells, MCAuto<DataArrayIdType>& numCells, MCAuto<DataArrayAsciiChar>& namesCells);
   private:
-    MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _fam_nodes;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _num_nodes;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayAsciiChar> _names_nodes;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _fam_cells;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _num_cells;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayAsciiChar> _names_cells;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _fam_faces;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _num_faces;
-    MEDCouplingAutoRefCountObjectPtr<DataArrayAsciiChar> _names_faces;
-    mutable MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _rev_num_nodes;
-    mutable MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _rev_num_cells;
-    mutable MEDCouplingAutoRefCountObjectPtr<MEDCoupling1SGTUMesh> _faces_if_necessary;
+    MCAuto<DataArrayIdType> _fam_nodes;
+    MCAuto<DataArrayIdType> _num_nodes;
+    MCAuto<DataArrayAsciiChar> _names_nodes;
+    MCAuto<DataArrayIdType> _fam_cells;
+    MCAuto<DataArrayIdType> _num_cells;
+    MCAuto<DataArrayAsciiChar> _names_cells;
+    MCAuto<DataArrayIdType> _fam_faces;
+    MCAuto<DataArrayIdType> _num_faces;
+    MCAuto<DataArrayAsciiChar> _names_faces;
+    mutable MCAuto<DataArrayIdType> _rev_num_nodes;
+    mutable MCAuto<DataArrayIdType> _rev_num_cells;
+    mutable MCAuto<MEDCoupling1SGTUMesh> _faces_if_necessary;
   };
 
   class MEDFileCMesh : public MEDFileStructuredMesh
@@ -372,12 +484,16 @@ namespace ParaMEDMEM
   public:
     MEDLOADER_EXPORT static MEDFileCMesh *New();
     MEDLOADER_EXPORT static MEDFileCMesh *New(const std::string& fileName, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileCMesh *New(med_idt fid, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileCMesh *New(DataArrayByte *db) { return BuildFromMemoryChunk<MEDFileCMesh>(db); }
     MEDLOADER_EXPORT static MEDFileCMesh *New(const std::string& fileName, const std::string& mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileCMesh *New(med_idt fid, const std::string& mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT std::string getClassName() const override { return std::string("MEDFileCMesh"); }
     MEDLOADER_EXPORT std::size_t getHeapMemorySizeWithoutChildren() const;
-    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildren() const;
+    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
     MEDLOADER_EXPORT MEDFileMesh *createNewEmpty() const;
-    MEDLOADER_EXPORT MEDFileMesh *deepCpy() const;
-    MEDLOADER_EXPORT MEDFileMesh *shallowCpy() const;
+    MEDLOADER_EXPORT MEDFileCMesh *deepCopy() const;
+    MEDLOADER_EXPORT MEDFileCMesh *shallowCpy() const;
     MEDLOADER_EXPORT bool isEqual(const MEDFileMesh *other, double eps, std::string& what) const;
     MEDLOADER_EXPORT int getMeshDimension() const;
     MEDLOADER_EXPORT int getSpaceDimension() const;
@@ -386,15 +502,17 @@ namespace ParaMEDMEM
     MEDLOADER_EXPORT void clearNonDiscrAttributes() const;
     MEDLOADER_EXPORT const MEDCouplingCMesh *getMesh() const;
     MEDLOADER_EXPORT void setMesh(MEDCouplingCMesh *m);
+    MEDLOADER_EXPORT MEDFileMesh *cartesianize() const;
   private:
+    ~MEDFileCMesh() { }
     const MEDCouplingStructuredMesh *getStructuredMesh() const;
-    void writeLL(med_idt fid) const;
+    void writeMeshLL(med_idt fid) const;
     MEDFileCMesh();
     void synchronizeTinyInfoOnLeaves() const;
     MEDFileCMesh(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);
-    void loadCMeshFromFile(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);
+    void loadLL(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);
   private:
-    MEDCouplingAutoRefCountObjectPtr<MEDCouplingCMesh> _cmesh;
+    MCAuto<MEDCouplingCMesh> _cmesh;
   };
 
   class MEDFileCurveLinearMesh : public MEDFileStructuredMesh
@@ -403,87 +521,108 @@ namespace ParaMEDMEM
   public:
     MEDLOADER_EXPORT static MEDFileCurveLinearMesh *New();
     MEDLOADER_EXPORT static MEDFileCurveLinearMesh *New(const std::string& fileName, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileCurveLinearMesh *New(med_idt fid, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileCurveLinearMesh *New(DataArrayByte *db) { return BuildFromMemoryChunk<MEDFileCurveLinearMesh>(db); }
     MEDLOADER_EXPORT static MEDFileCurveLinearMesh *New(const std::string& fileName, const std::string& mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT static MEDFileCurveLinearMesh *New(med_idt fid, const std::string& mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
+    MEDLOADER_EXPORT std::string getClassName() const override { return std::string("MEDFileCurveLinearMesh"); }
     MEDLOADER_EXPORT std::size_t getHeapMemorySizeWithoutChildren() const;
-    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildren() const;
+    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
     MEDLOADER_EXPORT MEDFileMesh *createNewEmpty() const;
-    MEDLOADER_EXPORT MEDFileMesh *deepCpy() const;
-    MEDLOADER_EXPORT MEDFileMesh *shallowCpy() const;
+    MEDLOADER_EXPORT MEDFileCurveLinearMesh *deepCopy() const;
+    MEDLOADER_EXPORT MEDFileCurveLinearMesh *shallowCpy() const;
     MEDLOADER_EXPORT bool isEqual(const MEDFileMesh *other, double eps, std::string& what) const;
     MEDLOADER_EXPORT int getMeshDimension() const;
+    MEDLOADER_EXPORT int getSpaceDimension() const;
     MEDLOADER_EXPORT std::string simpleRepr() const;
     MEDLOADER_EXPORT std::string advancedRepr() const;
     MEDLOADER_EXPORT void clearNonDiscrAttributes() const;
     MEDLOADER_EXPORT const MEDCouplingCurveLinearMesh *getMesh() const;
     MEDLOADER_EXPORT void setMesh(MEDCouplingCurveLinearMesh *m);
+    MEDLOADER_EXPORT MEDFileMesh *cartesianize() const;
   private:
+    ~MEDFileCurveLinearMesh() { }
     MEDFileCurveLinearMesh();
     MEDFileCurveLinearMesh(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);
     const MEDCouplingStructuredMesh *getStructuredMesh() const;
     void synchronizeTinyInfoOnLeaves() const;
-    void writeLL(med_idt fid) const;
-    void loadCLMeshFromFile(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);//to imp
+    void writeMeshLL(med_idt fid) const;
+    void loadLL(med_idt fid, const std::string& mName, int dt, int it, MEDFileMeshReadSelector *mrs);//to imp
   private:
-    MEDCouplingAutoRefCountObjectPtr<MEDCouplingCurveLinearMesh> _clmesh;
+    MCAuto<MEDCouplingCurveLinearMesh> _clmesh;
   };
 
-  class MEDFileMeshMultiTS : public RefCountObject, public MEDFileWritable
+  class MEDFileMeshMultiTS : public RefCountObject, public MEDFileWritableStandAlone
   {
   public:
     MEDLOADER_EXPORT static MEDFileMeshMultiTS *New();
+    MEDLOADER_EXPORT static MEDFileMeshMultiTS *New(med_idt fid);
     MEDLOADER_EXPORT static MEDFileMeshMultiTS *New(const std::string& fileName);
+    MEDLOADER_EXPORT static MEDFileMeshMultiTS *New(med_idt fid, const std::string& mName);
     MEDLOADER_EXPORT static MEDFileMeshMultiTS *New(const std::string& fileName, const std::string& mName);
-    MEDLOADER_EXPORT MEDFileMeshMultiTS *deepCpy() const;
+    MEDLOADER_EXPORT std::string getClassName() const override { return std::string("MEDFileMeshMultiTS"); }
+    MEDLOADER_EXPORT MEDFileMeshMultiTS *deepCopy() const;
     MEDLOADER_EXPORT std::size_t getHeapMemorySizeWithoutChildren() const;
-    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildren() const;
+    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
     MEDLOADER_EXPORT std::string getName() const;
     MEDLOADER_EXPORT void setName(const std::string& newMeshName);
     MEDLOADER_EXPORT bool changeNames(const std::vector< std::pair<std::string,std::string> >& modifTab);
+    MEDLOADER_EXPORT void cartesianizeMe();
     MEDLOADER_EXPORT MEDFileMesh *getOneTimeStep() const;
-    MEDLOADER_EXPORT void write(med_idt fid) const;
-    MEDLOADER_EXPORT void write(const std::string& fileName, int mode) const;
+    MEDLOADER_EXPORT void writeLL(med_idt fid) const;
     MEDLOADER_EXPORT void setOneTimeStep(MEDFileMesh *mesh1TimeStep);
+    MEDLOADER_EXPORT MEDFileJoints *getJoints() const;
+    MEDLOADER_EXPORT void setJoints(MEDFileJoints* joints);
+    MEDLOADER_EXPORT bool presenceOfStructureElements() const;
+    MEDLOADER_EXPORT void killStructureElements();
   private:
-    void loadFromFile(const std::string& fileName, const std::string& mName);
+    ~MEDFileMeshMultiTS() { }
+    void loadFromFile(med_idt fid, const std::string& mName);
     MEDFileMeshMultiTS();
-    MEDFileMeshMultiTS(const std::string& fileName);
-    MEDFileMeshMultiTS(const std::string& fileName, const std::string& mName);
+    MEDFileMeshMultiTS(med_idt fid);
+    MEDFileMeshMultiTS(med_idt fid, const std::string& mName);
   private:
-    std::vector< MEDCouplingAutoRefCountObjectPtr<MEDFileMesh> > _mesh_one_ts;
+    std::vector< MCAuto<MEDFileMesh> > _mesh_one_ts;
   };
 
   class MEDFileMeshesIterator;
 
-  class MEDFileMeshes : public RefCountObject, public MEDFileWritable
+  class MEDFileMeshes : public RefCountObject, public MEDFileWritableStandAlone
   {
   public:
     MEDLOADER_EXPORT static MEDFileMeshes *New();
+    MEDLOADER_EXPORT static MEDFileMeshes *New(med_idt fid);
+    MEDLOADER_EXPORT static MEDFileMeshes *New(DataArrayByte *db) { return BuildFromMemoryChunk<MEDFileMeshes>(db); }
     MEDLOADER_EXPORT static MEDFileMeshes *New(const std::string& fileName);
-    MEDLOADER_EXPORT MEDFileMeshes *deepCpy() const;
+    MEDLOADER_EXPORT std::string getClassName() const override { return std::string("MEDFileMeshes"); }
+    MEDLOADER_EXPORT MEDFileMeshes *deepCopy() const;
     MEDLOADER_EXPORT std::size_t getHeapMemorySizeWithoutChildren() const;
-    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildren() const;
+    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
     MEDLOADER_EXPORT std::string simpleRepr() const;
     MEDLOADER_EXPORT void simpleReprWithoutHeader(std::ostream& oss) const;
-    MEDLOADER_EXPORT void write(const std::string& fileName, int mode) const;
-    MEDLOADER_EXPORT void write(med_idt fid) const;
+    MEDLOADER_EXPORT void writeLL(med_idt fid) const;
     MEDLOADER_EXPORT int getNumberOfMeshes() const;
     MEDLOADER_EXPORT MEDFileMeshesIterator *iterator();
     MEDLOADER_EXPORT MEDFileMesh *getMeshAtPos(int i) const;
     MEDLOADER_EXPORT MEDFileMesh *getMeshWithName(const std::string& mname) const;
     MEDLOADER_EXPORT std::vector<std::string> getMeshesNames() const;
     MEDLOADER_EXPORT bool changeNames(const std::vector< std::pair<std::string,std::string> >& modifTab);
+    MEDLOADER_EXPORT void cartesianizeMe();
     //
     MEDLOADER_EXPORT void resize(int newSize);
     MEDLOADER_EXPORT void pushMesh(MEDFileMesh *mesh);
     MEDLOADER_EXPORT void setMeshAtPos(int i, MEDFileMesh *mesh);
     MEDLOADER_EXPORT void destroyMeshAtPos(int i);
+    MEDLOADER_EXPORT bool presenceOfStructureElements() const;
+    MEDLOADER_EXPORT void killStructureElements();
   private:
-    void checkCoherency() const;
-    void loadFromFile(const std::string& fileName);
+    ~MEDFileMeshes() { }
+    void checkConsistencyLight() const;
+    void loadFromFile(med_idt fid);
     MEDFileMeshes();
-    MEDFileMeshes(const std::string& fileName);
+    MEDFileMeshes(med_idt fid);
   private:
-    std::vector< MEDCouplingAutoRefCountObjectPtr<MEDFileMeshMultiTS> > _meshes;
+    std::vector< MCAuto<MEDFileMeshMultiTS> > _meshes;
   };
 
   class MEDFileMeshesIterator
@@ -493,7 +632,7 @@ namespace ParaMEDMEM
     MEDLOADER_EXPORT ~MEDFileMeshesIterator();
     MEDLOADER_EXPORT MEDFileMesh *nextt();
   private:
-    MEDCouplingAutoRefCountObjectPtr<MEDFileMeshes> _ms;
+    MCAuto<MEDFileMeshes> _ms;
     int _iter_id;
     int _nb_iter;
   };