X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FMEDLoader%2FMEDFileMesh.hxx;h=4b54ed0ce177913ba62148c0a80270d4d82d434f;hb=8bae03a55f48814db1d747c9ef8a8ee51d64e6d4;hp=1d69a413ad8922b6a6ee33eb0097760d94771055;hpb=920e7dc04507a3fde748bea094e6df1b7c178330;p=tools%2Fmedcoupling.git

diff --git a/src/MEDLoader/MEDFileMesh.hxx b/src/MEDLoader/MEDFileMesh.hxx
index 1d69a413a..4b54ed0ce 100644
--- a/src/MEDLoader/MEDFileMesh.hxx
+++ b/src/MEDLoader/MEDFileMesh.hxx
@@ -1,9 +1,9 @@
-// Copyright (C) 2007-2013  CEA/DEN, EDF R&D
+// Copyright (C) 2007-2019  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
 // License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
 //
 // This library is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -23,145 +23,215 @@
 
 #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 MEDLOADER_EXPORT MEDFileMesh : public RefCountObject, public MEDFileWritable
+  class MEDFileFieldGlobsReal;
+  class MEDFileField1TSStructItem;
+
+  class MEDFileMesh : public RefCountObject, public MEDFileWritableStandAlone
   {
   public:
-    static MEDFileMesh *New(const char *fileName, MEDFileMeshReadSelector *mrs=0) throw(INTERP_KERNEL::Exception);
-    static MEDFileMesh *New(const char *fileName, const char *mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0) throw(INTERP_KERNEL::Exception);
-    std::size_t getHeapMemorySize() const;
-    virtual MEDFileMesh *createNewEmpty() const throw(INTERP_KERNEL::Exception) = 0;
-    virtual MEDFileMesh *deepCpy() const throw(INTERP_KERNEL::Exception) = 0;
-    virtual MEDFileMesh *shallowCpy() const throw(INTERP_KERNEL::Exception) = 0;
-    virtual bool isEqual(const MEDFileMesh *other, double eps, std::string& what) const;
-    virtual void clearNonDiscrAttributes() const;
-    void setName(const char *name) { _name=name; }
-    bool changeNames(const std::vector< std::pair<std::string,std::string> >& modifTab) throw(INTERP_KERNEL::Exception);
-    const char *getName() const { return _name.c_str(); }
-    const char *getUnivName() const { return _univ_name.c_str(); }
-    bool getUnivNameWrStatus() const { return _univ_wr_status; }
-    void setUnivNameWrStatus(bool newStatus) { _univ_wr_status=newStatus; }
-    void setDescription(const char *name) { _desc_name=name; }
-    const char *getDescription() const { return _desc_name.c_str(); }
-    void setOrder(int order) { _order=order; }
-    int getOrder() const { return _order; }
-    void setIteration(int it) { _iteration=it; }
-    int getIteration() const { return _iteration; }
-    void setTimeValue(double time) { _time=time; }
-    void setTime(int dt, int it, double time) { _time=time; _iteration=dt; _order=it; }
-    double getTime(int& dt, int& it) { dt=_iteration; it=_order; return _time; }
-    double getTimeValue() const { return _time; }
-    void setTimeUnit(const char *unit) { _dt_unit=unit; }
-    const char *getTimeUnit() const { return _dt_unit.c_str(); }
-    virtual int getNumberOfNodes() const throw(INTERP_KERNEL::Exception) = 0;
-    virtual std::vector<int> getNonEmptyLevels() const = 0;
-    virtual std::vector<int> getNonEmptyLevelsExt() const = 0;
-    virtual std::vector<int> getFamArrNonEmptyLevelsExt() const = 0;
-    virtual std::vector<int> getNumArrNonEmptyLevelsExt() const = 0;
-    virtual std::vector<int> getNameArrNonEmptyLevelsExt() const = 0;
-    virtual void write(const char *fileName, int mode) const throw(INTERP_KERNEL::Exception);
-    virtual void write(med_idt fid) const throw(INTERP_KERNEL::Exception);
-    virtual int getSizeAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception) = 0;
-    virtual MEDCouplingMesh *getGenMeshAtLevel(int meshDimRelToMax, bool renum=false) const throw(INTERP_KERNEL::Exception) = 0;
+    MEDLOADER_EXPORT static MEDFileMesh *New(const std::string& fileName, 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 *> getDirectChildrenWithNull() const;
+    MEDLOADER_EXPORT virtual MEDFileMesh *createNewEmpty() 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;
+    MEDLOADER_EXPORT virtual void setName(const std::string& name);
+    MEDLOADER_EXPORT bool changeNames(const std::vector< std::pair<std::string,std::string> >& modifTab);
+    MEDLOADER_EXPORT std::string getName() const { return _name; }
+    MEDLOADER_EXPORT std::string getUnivName() const { return _univ_name; }
+    MEDLOADER_EXPORT bool getUnivNameWrStatus() const { return _univ_wr_status; }
+    MEDLOADER_EXPORT void setUnivNameWrStatus(bool newStatus) { _univ_wr_status=newStatus; }
+    MEDLOADER_EXPORT void setDescription(const std::string& name) { _desc_name=name; }
+    MEDLOADER_EXPORT std::string getDescription() const { return _desc_name; }
+    MEDLOADER_EXPORT void setOrder(int order) { _order=order; }
+    MEDLOADER_EXPORT int getOrder() const { return _order; }
+    MEDLOADER_EXPORT void setIteration(int it) { _iteration=it; }
+    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) 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 int 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 void releaseImplicitPartIfAny() const = 0;
+    MEDLOADER_EXPORT virtual std::vector<INTERP_KERNEL::NormalizedCellType> getGeoTypesAtLevel(int meshDimRelToMax) const = 0;
+    MEDLOADER_EXPORT virtual int 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 int getSizeAtLevel(int meshDimRelToMaxExt) const = 0;
+    MEDLOADER_EXPORT virtual MEDCouplingMesh *getMeshAtLevel(int meshDimRelToMax, bool renum=false) const = 0;
+    MEDLOADER_EXPORT virtual std::vector<int> 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() { }
     //
-    bool areFamsEqual(const MEDFileMesh *other, std::string& what) const;
-    bool areGrpsEqual(const MEDFileMesh *other, std::string& what) const;
-    bool existsGroup(const char *groupName) const;
-    bool existsFamily(int famId) const;
-    bool existsFamily(const char *familyName) const;
-    void setFamilyId(const char *familyName, int id);
-    void setFamilyIdUnique(const char *familyName, int id) throw(INTERP_KERNEL::Exception);
-    virtual void addFamily(const char *familyName, int id) throw(INTERP_KERNEL::Exception);
-    virtual void createGroupOnAll(int meshDimRelToMaxExt, const char *groupName) throw(INTERP_KERNEL::Exception);
-    virtual bool keepFamIdsOnlyOnLevs(const std::vector<int>& famIds, const std::vector<int>& levs) throw(INTERP_KERNEL::Exception);
-    void addFamilyOnGrp(const char *grpName, const char *famName) throw(INTERP_KERNEL::Exception);
-    std::string findOrCreateAndGiveFamilyWithId(int id, bool& created) throw(INTERP_KERNEL::Exception);
-    void setFamilyInfo(const std::map<std::string,int>& info);
-    void setGroupInfo(const std::map<std::string, std::vector<std::string> >&info);
-    void copyFamGrpMapsFrom(const MEDFileMesh& other);
-    const std::map<std::string,int>& getFamilyInfo() const { return _families; }
-    const std::map<std::string, std::vector<std::string> >& getGroupInfo() const { return _groups; }
-    std::vector<std::string> getFamiliesOnGroup(const char *name) const throw(INTERP_KERNEL::Exception);
-    std::vector<std::string> getFamiliesOnGroups(const std::vector<std::string>& grps) const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getFamiliesIdsOnGroup(const char *name) const throw(INTERP_KERNEL::Exception);
-    void setFamiliesOnGroup(const char *name, const std::vector<std::string>& fams) throw(INTERP_KERNEL::Exception);
-    void setFamiliesIdsOnGroup(const char *name, const std::vector<int>& famIds) throw(INTERP_KERNEL::Exception);
-    std::vector<std::string> getGroupsOnFamily(const char *name) const throw(INTERP_KERNEL::Exception);
-    void setGroupsOnFamily(const char *famName, const std::vector<std::string>& grps) throw(INTERP_KERNEL::Exception);
-    std::vector<std::string> getGroupsNames() const;
-    std::vector<std::string> getFamiliesNames() const;
-    void assignFamilyNameWithGroupName() throw(INTERP_KERNEL::Exception);
-    std::vector<std::string> removeEmptyGroups() throw(INTERP_KERNEL::Exception);
-    void removeGroup(const char *name) throw(INTERP_KERNEL::Exception);
-    void removeFamily(const char *name) throw(INTERP_KERNEL::Exception);
-    std::vector<std::string> removeOrphanGroups() throw(INTERP_KERNEL::Exception);
-    std::vector<std::string> removeOrphanFamilies() throw(INTERP_KERNEL::Exception);
-    void changeGroupName(const char *oldName, const char *newName) throw(INTERP_KERNEL::Exception);
-    void changeFamilyName(const char *oldName, const char *newName) throw(INTERP_KERNEL::Exception);
-    void changeFamilyId(int oldId, int newId) throw(INTERP_KERNEL::Exception);
-    void changeAllGroupsContainingFamily(const char *familyNameToChange, const std::vector<std::string>& newFamiliesNames) throw(INTERP_KERNEL::Exception);
-    int getFamilyId(const char *name) const throw(INTERP_KERNEL::Exception);
-    int getMaxAbsFamilyId() const throw(INTERP_KERNEL::Exception);
-    int getMaxFamilyId() const throw(INTERP_KERNEL::Exception);
-    int getMinFamilyId() const throw(INTERP_KERNEL::Exception);
-    int getTheMaxAbsFamilyId() const throw(INTERP_KERNEL::Exception);
-    int getTheMaxFamilyId() const throw(INTERP_KERNEL::Exception);
-    int getTheMinFamilyId() const throw(INTERP_KERNEL::Exception);
-    virtual int getMaxAbsFamilyIdInArrays() const throw(INTERP_KERNEL::Exception) = 0;
-    virtual int getMaxFamilyIdInArrays() const throw(INTERP_KERNEL::Exception) = 0;
-    virtual int getMinFamilyIdInArrays() const throw(INTERP_KERNEL::Exception) = 0;
-    DataArrayInt *getAllFamiliesIdsReferenced() const throw(INTERP_KERNEL::Exception);
-    DataArrayInt *computeAllFamilyIdsInUse() const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getFamiliesIds(const std::vector<std::string>& famNames) const throw(INTERP_KERNEL::Exception);
-    std::string getFamilyNameGivenId(int id) const throw(INTERP_KERNEL::Exception);
-    bool ensureDifferentFamIdsPerLevel() throw(INTERP_KERNEL::Exception);
-    void normalizeFamIdsTrio() throw(INTERP_KERNEL::Exception);
-    void normalizeFamIdsMEDFile() throw(INTERP_KERNEL::Exception);
-    virtual int getMeshDimension() const throw(INTERP_KERNEL::Exception) = 0;
-    virtual std::string simpleRepr() const;
-    virtual std::string advancedRepr() const = 0;
+    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(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 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 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 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, 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 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 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<int> getGrpNonEmptyLevelsExt(const std::string& grp) const;
+    MEDLOADER_EXPORT std::vector<int> getGrpNonEmptyLevels(const std::string& grp) 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 virtual std::vector<int> getFamsNonEmptyLevels(const std::vector<std::string>& fams) const = 0;
+    MEDLOADER_EXPORT virtual std::vector<int> getFamsNonEmptyLevelsExt(const std::vector<std::string>& fams) const = 0;
+    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<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 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 bool ensureDifferentFamIdsPerLevel();
+    MEDLOADER_EXPORT void normalizeFamIdsTrio();
+    MEDLOADER_EXPORT void normalizeFamIdsMEDFile();
+    MEDLOADER_EXPORT virtual int getMeshDimension() const = 0;
+    MEDLOADER_EXPORT virtual std::string simpleRepr() const;
+    MEDLOADER_EXPORT virtual std::string advancedRepr() const = 0;
     //
-    virtual void setGroupsAtLevel(int meshDimRelToMaxExt, const std::vector<const DataArrayInt *>& grps, bool renum=false) throw(INTERP_KERNEL::Exception);
-    virtual void setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayInt *famArr) throw(INTERP_KERNEL::Exception) = 0;
-    virtual void setRenumFieldArr(int meshDimRelToMaxExt, DataArrayInt *renumArr) throw(INTERP_KERNEL::Exception) = 0;
-    virtual void setNameFieldAtLevel(int meshDimRelToMaxExt, DataArrayAsciiChar *nameArr) throw(INTERP_KERNEL::Exception) = 0;
-    virtual const DataArrayInt *getFamilyFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception) = 0;
-    virtual const DataArrayInt *getNumberFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception) = 0;
-    virtual const DataArrayInt *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception) = 0;
-    virtual const DataArrayAsciiChar *getNameFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception) = 0;
-    virtual DataArrayInt *getFamiliesArr(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const throw(INTERP_KERNEL::Exception) = 0;
-    virtual DataArrayInt *getGroupsArr(int meshDimRelToMaxExt, const std::vector<std::string>& grps, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    virtual DataArrayInt *getGroupArr(int meshDimRelToMaxExt, const char *grp, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    virtual DataArrayInt *getFamilyArr(int meshDimRelToMaxExt, const char *fam, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    virtual DataArrayInt *getNodeGroupArr(const char *grp, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    virtual DataArrayInt *getNodeGroupsArr(const std::vector<std::string>& grps, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    virtual DataArrayInt *getNodeFamilyArr(const char *fam, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    virtual DataArrayInt *getNodeFamiliesArr(const std::vector<std::string>& fams, bool renum=false) const throw(INTERP_KERNEL::Exception);
+    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 setNameFieldAtLevel(int meshDimRelToMaxExt, DataArrayAsciiChar *nameArr) = 0;
+    MEDLOADER_EXPORT virtual void setGlobalNumFieldAtLevel(int meshDimRelToMaxExt, DataArrayInt *globalNumArr) = 0;
+    MEDLOADER_EXPORT virtual void addNodeGroup(const DataArrayInt *ids) = 0;
+    MEDLOADER_EXPORT virtual void addGroup(int meshDimRelToMaxExt, const DataArrayInt *ids) = 0;
+    MEDLOADER_EXPORT virtual const DataArrayInt *getFamilyFieldAtLevel(int meshDimRelToMaxExt) const = 0;
+    MEDLOADER_EXPORT virtual DataArrayInt *getFamilyFieldAtLevel(int meshDimRelToMaxExt) = 0;
+    MEDLOADER_EXPORT DataArrayInt *getOrCreateAndGetFamilyFieldAtLevel(int meshDimRelToMaxExt);
+    MEDLOADER_EXPORT virtual const DataArrayInt *getNumberFieldAtLevel(int meshDimRelToMaxExt) const = 0;
+    MEDLOADER_EXPORT virtual const DataArrayInt *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const = 0;
+    MEDLOADER_EXPORT virtual const DataArrayAsciiChar *getNameFieldAtLevel(int meshDimRelToMaxExt) const = 0;
+    MEDLOADER_EXPORT virtual MCAuto<DataArrayInt> getGlobalNumFieldAtLevel(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;
     // tools
-    virtual bool unPolyze(std::vector<int>& oldCode, std::vector<int>& newCode, DataArrayInt *& o2nRenumCell) throw(INTERP_KERNEL::Exception) = 0;
+    MEDLOADER_EXPORT virtual bool unPolyze(std::vector<int>& oldCode, std::vector<int>& newCode, DataArrayInt *& 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); }
+    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 char *name) { _univ_name=name; }
-    void addFamilyOnAllGroupsHaving(const char *famName, const char *otherFamName) throw(INTERP_KERNEL::Exception);
-    virtual void writeLL(med_idt fid) const throw(INTERP_KERNEL::Exception) = 0;
-    void dealWithTinyInfo(const MEDCouplingMesh *m) throw(INTERP_KERNEL::Exception);
+    void setUnivName(const std::string& name) { _univ_name=name; }
+    void addFamilyOnAllGroupsHaving(const std::string& famName, const std::string& otherFamName);
+    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) throw(INTERP_KERNEL::Exception) = 0;
+    virtual void changeFamilyIdArr(int oldId, int newId) = 0;
+    virtual std::list< MCAuto<DataArrayInt> > 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 DataArrayInt *ids, DataArrayInt *famArr);
     static void TranslateFamilyIds(int offset, DataArrayInt *famArr, std::vector< std::vector<int> >& famIdsPerGrp);
-    static void ChangeAllGroupsContainingFamily(std::map<std::string, std::vector<std::string> >& groups, const char *familyNameToChange, const std::vector<std::string>& newFamiliesNames) throw(INTERP_KERNEL::Exception);
-    static std::string FindOrCreateAndGiveFamilyWithId(std::map<std::string,int>& families, int id, bool& created) throw(INTERP_KERNEL::Exception);
-    static std::string CreateNameNotIn(const std::string& nameTry, const std::vector<std::string>& namesToAvoid) throw(INTERP_KERNEL::Exception);
-    static int PutInThirdComponentOfCodeOffset(std::vector<int>& code, int strt) throw(INTERP_KERNEL::Exception);
+    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 CreateNameNotIn(const std::string& nameTry, const std::vector<std::string>& namesToAvoid);
+    static int PutInThirdComponentOfCodeOffset(std::vector<int>& code, int 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 DataArrayInt *famArr, const std::string& grpName) const;
+  private:
+    virtual void writeMeshLL(med_idt fid) const = 0;
   protected:
     int _order;
     int _iteration;
@@ -172,280 +242,389 @@ 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;
   public:
-    static const char DFT_FAM_NAME[];
+    MEDLOADER_EXPORT static const char DFT_FAM_NAME[];
   };
 
-  class MEDLOADER_EXPORT MEDFileUMesh : public MEDFileMesh
+  class MEDCouplingMappedExtrudedMesh;
+  
+  class MEDFileUMesh : public MEDFileMesh
   {
     friend class MEDFileMesh;
   public:
-    static MEDFileUMesh *New(const char *fileName, const char *mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0) throw(INTERP_KERNEL::Exception);
-    static MEDFileUMesh *New(const char *fileName, MEDFileMeshReadSelector *mrs=0) throw(INTERP_KERNEL::Exception);
-    static MEDFileUMesh *New();
-    std::size_t getHeapMemorySize() const;
-    MEDFileMesh *createNewEmpty() const throw(INTERP_KERNEL::Exception);
-    MEDFileMesh *deepCpy() const throw(INTERP_KERNEL::Exception);
-    MEDFileMesh *shallowCpy() const throw(INTERP_KERNEL::Exception);
-    bool isEqual(const MEDFileMesh *other, double eps, std::string& what) const;
-    void clearNonDiscrAttributes() const;
-    ~MEDFileUMesh();
+    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 static MEDFileUMesh *LoadPartOf(const std::string& fileName, const std::string& mName, const std::vector<INTERP_KERNEL::NormalizedCellType>& types, const std::vector<int>& 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<int>& slicPerTyp, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0);
+    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 *> getDirectChildrenWithNull() const;
+    MEDLOADER_EXPORT MEDFileMesh *createNewEmpty() 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 const std::vector< MCAuto<MEDFileEltStruct4Mesh> >& getAccessOfUndergroundEltStrs() const { return _elt_str; }
     //
-    int getMaxAbsFamilyIdInArrays() const throw(INTERP_KERNEL::Exception);
-    int getMaxFamilyIdInArrays() const throw(INTERP_KERNEL::Exception);
-    int getMinFamilyIdInArrays() const throw(INTERP_KERNEL::Exception);
-    int getMeshDimension() const throw(INTERP_KERNEL::Exception);
-    int getSpaceDimension() const throw(INTERP_KERNEL::Exception);
-    std::string simpleRepr() const;
-    std::string advancedRepr() const;
-    int getSizeAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    const DataArrayInt *getFamilyFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    const DataArrayInt *getNumberFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    const DataArrayInt *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    const DataArrayAsciiChar *getNameFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    int getNumberOfNodes() const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getNonEmptyLevels() const;
-    std::vector<int> getNonEmptyLevelsExt() const;
-    std::vector<int> getFamArrNonEmptyLevelsExt() const;
-    std::vector<int> getNumArrNonEmptyLevelsExt() const;
-    std::vector<int> getNameArrNonEmptyLevelsExt() const;
-    std::vector<int> getGrpNonEmptyLevels(const char *grp) const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getGrpNonEmptyLevelsExt(const char *grp) const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getFamNonEmptyLevels(const char *fam) const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getFamNonEmptyLevelsExt(const char *fam) const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getGrpsNonEmptyLevels(const std::vector<std::string>& grps) const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getGrpsNonEmptyLevelsExt(const std::vector<std::string>& grps) const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getFamsNonEmptyLevels(const std::vector<std::string>& fams) const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getFamsNonEmptyLevelsExt(const std::vector<std::string>& fams) const throw(INTERP_KERNEL::Exception);
-    std::vector<std::string> getGroupsOnSpecifiedLev(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    DataArrayDouble *getCoords() const;
-    MEDCouplingUMesh *getGroup(int meshDimRelToMaxExt, const char *grp, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    MEDCouplingUMesh *getGroups(int meshDimRelToMaxExt, const std::vector<std::string>& grps, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    MEDCouplingUMesh *getFamily(int meshDimRelToMaxExt, const char *fam, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    MEDCouplingUMesh *getFamilies(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    DataArrayInt *getFamiliesArr(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    MEDCouplingUMesh *getMeshAtLevel(int meshDimRelToMaxExt, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    MEDCouplingMesh *getGenMeshAtLevel(int meshDimRelToMax, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    MEDCouplingUMesh *getLevel0Mesh(bool renum=false) const throw(INTERP_KERNEL::Exception);
-    MEDCouplingUMesh *getLevelM1Mesh(bool renum=false) const throw(INTERP_KERNEL::Exception);
-    MEDCouplingUMesh *getLevelM2Mesh(bool renum=false) const throw(INTERP_KERNEL::Exception);
-    MEDCouplingUMesh *getLevelM3Mesh(bool renum=false) const throw(INTERP_KERNEL::Exception);
+    MEDLOADER_EXPORT int getMaxAbsFamilyIdInArrays() const;
+    MEDLOADER_EXPORT int getMaxFamilyIdInArrays() const;
+    MEDLOADER_EXPORT int 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 DataArrayInt *getFamilyFieldAtLevel(int meshDimRelToMaxExt);
+    MEDLOADER_EXPORT const DataArrayInt *getNumberFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT const DataArrayInt *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT const DataArrayAsciiChar *getNameFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT MCAuto<DataArrayInt> getGlobalNumFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT const PartDefinition *getPartDefAtLevel(int meshDimRelToMaxExt, INTERP_KERNEL::NormalizedCellType gt=INTERP_KERNEL::NORM_ERROR) const;
+    MEDLOADER_EXPORT int getNumberOfNodes() const;
+    MEDLOADER_EXPORT int getNumberOfCellsAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT bool hasImplicitPart() const;
+    MEDLOADER_EXPORT int buildImplicitPartIfAny(INTERP_KERNEL::NormalizedCellType gt) const;
+    MEDLOADER_EXPORT void releaseImplicitPartIfAny() const;
+    MEDLOADER_EXPORT std::vector<INTERP_KERNEL::NormalizedCellType> getGeoTypesAtLevel(int meshDimRelToMax) const;
+    MEDLOADER_EXPORT int 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> getFamsNonEmptyLevels(const std::vector<std::string>& fams) const;
+    MEDLOADER_EXPORT std::vector<int> 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 meshDimRelToMax, bool renum=false) const;
+    MEDLOADER_EXPORT std::vector<int> getDistributionOfTypes(int meshDimRelToMax) const;
+    MEDLOADER_EXPORT std::vector< std::pair<int,int> > 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 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 int getRelativeLevOnGeoType(INTERP_KERNEL::NormalizedCellType gt) const;
     //
-    void setFamilyNameAttachedOnId(int id, const std::string& newFamName) throw(INTERP_KERNEL::Exception);
-    void setCoords(DataArrayDouble *coords) throw(INTERP_KERNEL::Exception);
-    void eraseGroupsAtLevel(int meshDimRelToMaxExt) throw(INTERP_KERNEL::Exception);
-    void setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayInt *famArr) throw(INTERP_KERNEL::Exception);
-    void setRenumFieldArr(int meshDimRelToMaxExt, DataArrayInt *renumArr) throw(INTERP_KERNEL::Exception);
-    void setNameFieldAtLevel(int meshDimRelToMaxExt, DataArrayAsciiChar *nameArr) throw(INTERP_KERNEL::Exception);
-    void addNodeGroup(const DataArrayInt *ids) throw(INTERP_KERNEL::Exception);
-    void addGroup(int meshDimRelToMaxExt, const DataArrayInt *ids) throw(INTERP_KERNEL::Exception);
-    void removeMeshAtLevel(int meshDimRelToMax) throw(INTERP_KERNEL::Exception);
-    void setMeshAtLevel(int meshDimRelToMax, MEDCouplingUMesh *m, bool newOrOld=false) throw(INTERP_KERNEL::Exception);
-    void setMeshes(const std::vector<const MEDCouplingUMesh *>& ms, bool renum=false) throw(INTERP_KERNEL::Exception);
-    void setGroupsFromScratch(int meshDimRelToMax, const std::vector<const MEDCouplingUMesh *>& ms, bool renum=false) throw(INTERP_KERNEL::Exception);
-    void setGroupsOnSetMesh(int meshDimRelToMax, const std::vector<const MEDCouplingUMesh *>& ms, bool renum=false) throw(INTERP_KERNEL::Exception);
-    void optimizeFamilies() throw(INTERP_KERNEL::Exception);
+    MEDLOADER_EXPORT void setFamilyNameAttachedOnId(int 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 setNameFieldAtLevel(int meshDimRelToMaxExt, DataArrayAsciiChar *nameArr);
+    MEDLOADER_EXPORT void setGlobalNumFieldAtLevel(int meshDimRelToMaxExt, DataArrayInt *globalNumArr);
+    MEDLOADER_EXPORT void addNodeGroup(const DataArrayInt *ids);
+    MEDLOADER_EXPORT void addGroup(int meshDimRelToMaxExt, const DataArrayInt *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);
+    MEDLOADER_EXPORT void setMeshes(const std::vector<const MEDCouplingUMesh *>& ms, bool renum=false);
+    MEDLOADER_EXPORT void setGroupsFromScratch(int meshDimRelToMax, const std::vector<const MEDCouplingUMesh *>& ms, bool renum=false);
+    MEDLOADER_EXPORT void setGroupsOnSetMesh(int meshDimRelToMax, const std::vector<const MEDCouplingUMesh *>& ms, bool renum=false);
+    MEDLOADER_EXPORT void optimizeFamilies();
     // tools
-    void duplicateNodesOnM1Group(const char *grpNameM1, DataArrayInt *&nodesDuplicated, DataArrayInt *&cellsModified, DataArrayInt *&cellsNotModified) throw(INTERP_KERNEL::Exception);
-    bool unPolyze(std::vector<int>& oldCode, std::vector<int>& newCode, DataArrayInt *& o2nRenumCell) throw(INTERP_KERNEL::Exception);
-    DataArrayInt *zipCoords() throw(INTERP_KERNEL::Exception);
+    MEDLOADER_EXPORT void buildInnerBoundaryAlongM1Group(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 DataArrayInt *deduceNodeSubPartFromCellSubPart(const std::map<int, MCAuto<DataArrayInt> >& extractDef) const;
+    MEDLOADER_EXPORT MEDFileUMesh *extractPart(const std::map<int, MCAuto<DataArrayInt> >& 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<int>& tinyInt, std::vector<std::string>& tinyStr,
+                                    std::vector< MCAuto<DataArrayInt> >& bigArraysI, MCAuto<DataArrayDouble>& bigArrayD);
+    MEDLOADER_EXPORT void unserialize(std::vector<double>& tinyDouble, std::vector<int>& tinyInt, std::vector<std::string>& tinyStr,
+                                      std::vector< MCAuto<DataArrayInt> >& bigArraysI, MCAuto<DataArrayDouble>& bigArrayD);
   private:
-    void writeLL(med_idt fid) const throw(INTERP_KERNEL::Exception);
+    MEDLOADER_EXPORT ~MEDFileUMesh();
+    void writeMeshLL(med_idt fid) const;
     MEDFileUMesh();
-    MEDFileUMesh(med_idt fid, const char *mName, int dt, int it, MEDFileMeshReadSelector *mrs) throw(INTERP_KERNEL::Exception);
-    void loadUMeshFromFile(med_idt fid, const char *mName, int dt, int it, MEDFileMeshReadSelector *mrs) throw(INTERP_KERNEL::Exception);
-    const MEDFileUMeshSplitL1 *getMeshAtLevSafe(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    MEDFileUMeshSplitL1 *getMeshAtLevSafe(int meshDimRelToMaxExt) throw(INTERP_KERNEL::Exception);
-    void checkMeshDimCoherency(int meshDim, int meshDimRelToMax) const throw(INTERP_KERNEL::Exception);
-    DataArrayDouble *checkMultiMesh(const std::vector<const MEDCouplingUMesh *>& ms) const throw(INTERP_KERNEL::Exception);
+    MEDFileUMesh(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<int>& 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) throw(INTERP_KERNEL::Exception);
-    std::list< MEDCouplingAutoRefCountObjectPtr<DataArrayInt> > getAllNonNullFamilyIds() const;
-    void addGroupUnderground(bool isNodeGroup, const DataArrayInt *ids, DataArrayInt *famArr) throw(INTERP_KERNEL::Exception);
+    void changeFamilyIdArr(int oldId, int newId);
+    std::list< MCAuto<DataArrayInt> > getAllNonNullFamilyIds() const;
+    MCAuto<MEDFileUMeshSplitL1>& checkAndGiveEntryInSplitL1(int meshDimRelToMax, MEDCouplingPointSet *m);
   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;
+    static const char SPE_FAM_STR_EXTRUDED_MESH[];
+  private:
+    std::vector< MCAuto<MEDFileUMeshSplitL1> > _ms;
+    MCAuto<DataArrayDouble> _coords;
+    MCAuto<DataArrayInt> _fam_coords;     ///< Node family indices
+    MCAuto<DataArrayInt> _num_coords;
+    MCAuto<DataArrayInt> _global_num_coords;
+    MCAuto<DataArrayAsciiChar> _name_coords;
+    mutable MCAuto<DataArrayInt> _rev_num_coords;
+    MCAuto<PartDefinition> _part_coords;
+    std::vector< MCAuto<MEDFileEltStruct4Mesh> > _elt_str;
   };
 
-  class MEDLOADER_EXPORT MEDFileStructuredMesh : public MEDFileMesh
+  class MEDFileStructuredMesh : public MEDFileMesh
   {
     friend class MEDFileMesh;
   public:
-    std::size_t getHeapMemorySize() const;
-    int getMaxAbsFamilyIdInArrays() const throw(INTERP_KERNEL::Exception);
-    int getMaxFamilyIdInArrays() const throw(INTERP_KERNEL::Exception);
-    int getMinFamilyIdInArrays() const throw(INTERP_KERNEL::Exception);
-    bool isEqual(const MEDFileMesh *other, double eps, std::string& what) const;
-    void clearNonDiscrAttributes() const;
-    DataArrayInt *getFamiliesArr(int meshDimRelToMaxExt, const std::vector<std::string>& fams, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    const DataArrayInt *getFamilyFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    void setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayInt *famArr) throw(INTERP_KERNEL::Exception);
-    void setRenumFieldArr(int meshDimRelToMaxExt, DataArrayInt *renumArr) throw(INTERP_KERNEL::Exception);
-    void setNameFieldAtLevel(int meshDimRelToMaxExt, DataArrayAsciiChar *nameArr) throw(INTERP_KERNEL::Exception);
-    const DataArrayInt *getNumberFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    const DataArrayInt *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    const DataArrayAsciiChar *getNameFieldAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    std::vector<int> getNonEmptyLevels() const;
-    std::vector<int> getNonEmptyLevelsExt() const;
-    std::vector<int> getFamArrNonEmptyLevelsExt() const;
-    std::vector<int> getNumArrNonEmptyLevelsExt() const;
-    std::vector<int> getNameArrNonEmptyLevelsExt() const;
-    MEDCouplingMesh *getGenMeshAtLevel(int meshDimRelToMax, bool renum=false) const throw(INTERP_KERNEL::Exception);
-    int getSizeAtLevel(int meshDimRelToMaxExt) const throw(INTERP_KERNEL::Exception);
-    int getNumberOfNodes() const throw(INTERP_KERNEL::Exception);
+    MEDLOADER_EXPORT std::size_t getHeapMemorySizeWithoutChildren() const;
+    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
+    MEDLOADER_EXPORT int getMaxAbsFamilyIdInArrays() const;
+    MEDLOADER_EXPORT int getMaxFamilyIdInArrays() const;
+    MEDLOADER_EXPORT int 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 DataArrayInt *getFamilyFieldAtLevel(int meshDimRelToMaxExt);
+    MEDLOADER_EXPORT void setFamilyFieldArr(int meshDimRelToMaxExt, DataArrayInt *famArr);
+    MEDLOADER_EXPORT void setRenumFieldArr(int meshDimRelToMaxExt, DataArrayInt *renumArr);
+    MEDLOADER_EXPORT void setNameFieldAtLevel(int meshDimRelToMaxExt, DataArrayAsciiChar *nameArr);
+    MEDLOADER_EXPORT void setGlobalNumFieldAtLevel(int meshDimRelToMaxExt, DataArrayInt *globalNumArr);
+    MEDLOADER_EXPORT void addNodeGroup(const DataArrayInt *ids);
+    MEDLOADER_EXPORT void addGroup(int meshDimRelToMaxExt, const DataArrayInt *ids);
+    MEDLOADER_EXPORT const DataArrayInt *getNumberFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT const DataArrayInt *getRevNumberFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT const DataArrayAsciiChar *getNameFieldAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT MCAuto<DataArrayInt> 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;
+    MEDLOADER_EXPORT MEDCouplingMesh *getMeshAtLevel(int meshDimRelToMax, bool renum=false) 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 int getSizeAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT int getNumberOfNodes() const;
+    MEDLOADER_EXPORT int getNumberOfCellsAtLevel(int meshDimRelToMaxExt) const;
+    MEDLOADER_EXPORT bool hasImplicitPart() const;
+    MEDLOADER_EXPORT int 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 int 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
-    bool unPolyze(std::vector<int>& oldCode, std::vector<int>& newCode, DataArrayInt *& o2nRenumCell) throw(INTERP_KERNEL::Exception);
+    MEDLOADER_EXPORT bool unPolyze(std::vector<int>& oldCode, std::vector<int>& newCode, DataArrayInt *& o2nRenumCell);
   protected:
-    void changeFamilyIdArr(int oldId, int newId) throw(INTERP_KERNEL::Exception);
-    void deepCpyAttributes() throw(INTERP_KERNEL::Exception);
-    void loadStrMeshFromFile(MEDFileStrMeshL2 *strm, med_idt fid, const char *mName, int dt, int it, MEDFileMeshReadSelector *mrs) throw(INTERP_KERNEL::Exception);
-    void writeStructuredLL(med_idt fid, const char *maa) const throw(INTERP_KERNEL::Exception);
-    virtual const MEDCouplingStructuredMesh *getStructuredMesh() const = 0;
-    static med_geometry_type GetGeoTypeFromMeshDim(int meshDim) throw(INTERP_KERNEL::Exception);
+    ~MEDFileStructuredMesh() { }
+    void changeFamilyIdArr(int oldId, int newId);
+    std::list< MCAuto<DataArrayInt> > 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;
+    void buildImplicitPart() const;
+    void buildMinusOneImplicitPartIfNeeded() const;
+    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,
+                                      MCAuto<DataArrayInt>& famCells, MCAuto<DataArrayInt>& 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;
-    mutable MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _rev_num_nodes;
-    mutable MEDCouplingAutoRefCountObjectPtr<DataArrayInt> _rev_num_cells;
+    MCAuto<DataArrayInt> _fam_nodes;
+    MCAuto<DataArrayInt> _num_nodes;
+    MCAuto<DataArrayAsciiChar> _names_nodes;
+    MCAuto<DataArrayInt> _fam_cells;
+    MCAuto<DataArrayInt> _num_cells;
+    MCAuto<DataArrayAsciiChar> _names_cells;
+    MCAuto<DataArrayInt> _fam_faces;
+    MCAuto<DataArrayInt> _num_faces;
+    MCAuto<DataArrayAsciiChar> _names_faces;
+    mutable MCAuto<DataArrayInt> _rev_num_nodes;
+    mutable MCAuto<DataArrayInt> _rev_num_cells;
+    mutable MCAuto<MEDCoupling1SGTUMesh> _faces_if_necessary;
   };
 
-  class MEDLOADER_EXPORT MEDFileCMesh : public MEDFileStructuredMesh
+  class MEDFileCMesh : public MEDFileStructuredMesh
   {
     friend class MEDFileMesh;
   public:
-    static MEDFileCMesh *New();
-    static MEDFileCMesh *New(const char *fileName, MEDFileMeshReadSelector *mrs=0) throw(INTERP_KERNEL::Exception);
-    static MEDFileCMesh *New(const char *fileName, const char *mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0) throw(INTERP_KERNEL::Exception);
-    std::size_t getHeapMemorySize() const;
-    MEDFileMesh *createNewEmpty() const throw(INTERP_KERNEL::Exception);
-    MEDFileMesh *deepCpy() const throw(INTERP_KERNEL::Exception);
-    MEDFileMesh *shallowCpy() const throw(INTERP_KERNEL::Exception);
-    bool isEqual(const MEDFileMesh *other, double eps, std::string& what) const;
-    int getMeshDimension() const throw(INTERP_KERNEL::Exception);
-    std::string simpleRepr() const;
-    std::string advancedRepr() const;
-    void clearNonDiscrAttributes() const;
-    const MEDCouplingCMesh *getMesh() const;
-    void setMesh(MEDCouplingCMesh *m) throw(INTERP_KERNEL::Exception);
+    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::size_t getHeapMemorySizeWithoutChildren() const;
+    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
+    MEDLOADER_EXPORT MEDFileMesh *createNewEmpty() 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;
+    MEDLOADER_EXPORT std::string simpleRepr() const;
+    MEDLOADER_EXPORT std::string advancedRepr() const;
+    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 throw(INTERP_KERNEL::Exception);
+    void writeMeshLL(med_idt fid) const;
     MEDFileCMesh();
     void synchronizeTinyInfoOnLeaves() const;
-    MEDFileCMesh(med_idt fid, const char *mName, int dt, int it, MEDFileMeshReadSelector *mrs) throw(INTERP_KERNEL::Exception);
-    void loadCMeshFromFile(med_idt fid, const char *mName, int dt, int it, MEDFileMeshReadSelector *mrs) throw(INTERP_KERNEL::Exception);
+    MEDFileCMesh(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 MEDLOADER_EXPORT MEDFileCurveLinearMesh : public MEDFileStructuredMesh
+  class MEDFileCurveLinearMesh : public MEDFileStructuredMesh
   {
     friend class MEDFileMesh;
   public:
-    static MEDFileCurveLinearMesh *New();
-    static MEDFileCurveLinearMesh *New(const char *fileName, MEDFileMeshReadSelector *mrs=0) throw(INTERP_KERNEL::Exception);
-    static MEDFileCurveLinearMesh *New(const char *fileName, const char *mName, int dt=-1, int it=-1, MEDFileMeshReadSelector *mrs=0) throw(INTERP_KERNEL::Exception);
-    std::size_t getHeapMemorySize() const;
-    MEDFileMesh *createNewEmpty() const throw(INTERP_KERNEL::Exception);
-    MEDFileMesh *deepCpy() const throw(INTERP_KERNEL::Exception);
-    MEDFileMesh *shallowCpy() const throw(INTERP_KERNEL::Exception);
-    bool isEqual(const MEDFileMesh *other, double eps, std::string& what) const;
-    int getMeshDimension() const throw(INTERP_KERNEL::Exception);
-    std::string simpleRepr() const;
-    std::string advancedRepr() const;
-    void clearNonDiscrAttributes() const;
-    const MEDCouplingCurveLinearMesh *getMesh() const;
-    void setMesh(MEDCouplingCurveLinearMesh *m) throw(INTERP_KERNEL::Exception);
+    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::size_t getHeapMemorySizeWithoutChildren() const;
+    MEDLOADER_EXPORT std::vector<const BigMemoryObject *> getDirectChildrenWithNull() const;
+    MEDLOADER_EXPORT MEDFileMesh *createNewEmpty() 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 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 char *mName, int dt, int it, MEDFileMeshReadSelector *mrs) throw(INTERP_KERNEL::Exception);
+    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 throw(INTERP_KERNEL::Exception);
-    void loadCLMeshFromFile(med_idt fid, const char *mName, int dt, int it, MEDFileMeshReadSelector *mrs) throw(INTERP_KERNEL::Exception);//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 MEDLOADER_EXPORT MEDFileMeshMultiTS : public RefCountObject, public MEDFileWritable
+  class MEDFileMeshMultiTS : public RefCountObject, public MEDFileWritableStandAlone
   {
   public:
-    static MEDFileMeshMultiTS *New();
-    static MEDFileMeshMultiTS *New(const char *fileName) throw(INTERP_KERNEL::Exception);
-    static MEDFileMeshMultiTS *New(const char *fileName, const char *mName) throw(INTERP_KERNEL::Exception);
-    MEDFileMeshMultiTS *deepCpy() const throw(INTERP_KERNEL::Exception);
-    std::size_t getHeapMemorySize() const;
-    const char *getName() const throw(INTERP_KERNEL::Exception);
-    void setName(const char *newMeshName) throw(INTERP_KERNEL::Exception);
-    bool changeNames(const std::vector< std::pair<std::string,std::string> >& modifTab) throw(INTERP_KERNEL::Exception);
-    MEDFileMesh *getOneTimeStep() const throw(INTERP_KERNEL::Exception);
-    void write(med_idt fid) const throw(INTERP_KERNEL::Exception);
-    void write(const char *fileName, int mode) const throw(INTERP_KERNEL::Exception);
-    void setOneTimeStep(MEDFileMesh *mesh1TimeStep) throw(INTERP_KERNEL::Exception);
+    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 *deepCopy() const;
+    MEDLOADER_EXPORT std::size_t getHeapMemorySizeWithoutChildren() 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 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 char *fileName, const char *mName) throw(INTERP_KERNEL::Exception);
+    ~MEDFileMeshMultiTS() { }
+    void loadFromFile(med_idt fid, const std::string& mName);
     MEDFileMeshMultiTS();
-    MEDFileMeshMultiTS(const char *fileName) throw(INTERP_KERNEL::Exception);
-    MEDFileMeshMultiTS(const char *fileName, const char *mName) throw(INTERP_KERNEL::Exception);
+    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 MEDLOADER_EXPORT MEDFileMeshes : public RefCountObject, public MEDFileWritable
+  class MEDFileMeshes : public RefCountObject, public MEDFileWritableStandAlone
   {
   public:
-    static MEDFileMeshes *New();
-    static MEDFileMeshes *New(const char *fileName) throw(INTERP_KERNEL::Exception);
-    MEDFileMeshes *deepCpy() const throw(INTERP_KERNEL::Exception);
-    std::size_t getHeapMemorySize() const;
-    std::string simpleRepr() const;
-    void simpleReprWithoutHeader(std::ostream& oss) const;
-    void write(const char *fileName, int mode) const throw(INTERP_KERNEL::Exception);
-    void write(med_idt fid) const throw(INTERP_KERNEL::Exception);
-    int getNumberOfMeshes() const throw(INTERP_KERNEL::Exception);
-    MEDFileMeshesIterator *iterator() throw(INTERP_KERNEL::Exception);
-    MEDFileMesh *getMeshAtPos(int i) const throw(INTERP_KERNEL::Exception);
-    MEDFileMesh *getMeshWithName(const char *mname) const throw(INTERP_KERNEL::Exception);
-    std::vector<std::string> getMeshesNames() const throw(INTERP_KERNEL::Exception);
-    bool changeNames(const std::vector< std::pair<std::string,std::string> >& modifTab) throw(INTERP_KERNEL::Exception);
+    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 *deepCopy() const;
+    MEDLOADER_EXPORT std::size_t getHeapMemorySizeWithoutChildren() 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 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();
     //
-    void resize(int newSize) throw(INTERP_KERNEL::Exception);
-    void pushMesh(MEDFileMesh *mesh) throw(INTERP_KERNEL::Exception);
-    void setMeshAtPos(int i, MEDFileMesh *mesh) throw(INTERP_KERNEL::Exception);
-    void destroyMeshAtPos(int i) throw(INTERP_KERNEL::Exception);
+    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 throw(INTERP_KERNEL::Exception);
-    void loadFromFile(const char *fileName) throw(INTERP_KERNEL::Exception);
+    ~MEDFileMeshes() { }
+    void checkConsistencyLight() const;
+    void loadFromFile(med_idt fid);
     MEDFileMeshes();
-    MEDFileMeshes(const char *fileName) throw(INTERP_KERNEL::Exception);
+    MEDFileMeshes(med_idt fid);
   private:
-    std::vector< MEDCouplingAutoRefCountObjectPtr<MEDFileMeshMultiTS> > _meshes;
+    std::vector< MCAuto<MEDFileMeshMultiTS> > _meshes;
   };
 
-  class MEDCOUPLING_EXPORT MEDFileMeshesIterator
+  class MEDFileMeshesIterator
   {
   public:
-    MEDFileMeshesIterator(MEDFileMeshes *ms);
-    ~MEDFileMeshesIterator();
-    MEDFileMesh *nextt();
+    MEDLOADER_EXPORT MEDFileMeshesIterator(MEDFileMeshes *ms);
+    MEDLOADER_EXPORT ~MEDFileMeshesIterator();
+    MEDLOADER_EXPORT MEDFileMesh *nextt();
   private:
-    MEDCouplingAutoRefCountObjectPtr<MEDFileMeshes> _ms;
-     int _iter_id;
-     int _nb_iter;
+    MCAuto<MEDFileMeshes> _ms;
+    int _iter_id;
+    int _nb_iter;
   };
 }