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https://git.dev.opencascade.org/repos/occt.git
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ec96437207
1. Bug fix in reading old persistent data using FSD_File storage driver 2. Persistence compatible with legacy format was restored for shapes a. Implemented a storage read / write wrapper for legacy persistence b. Added DRAW commands to read / write files in legacy format c. Added test cases for reading / writing operations with checking number of sub-shapes and physical properties d. Updated related sections of the development guide
117 lines
4.2 KiB
C++
117 lines
4.2 KiB
C++
// Copyright (c) 2015 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _StdObjMgt_Persistent_HeaderFile
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#define _StdObjMgt_Persistent_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Handle.hxx>
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#include <Standard_Transient.hxx>
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#include <NCollection_Sequence.hxx>
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#include <TDF_Label.hxx>
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class StdObjMgt_ReadData;
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class StdObjMgt_WriteData;
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class TDocStd_Document;
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class TDF_Attribute;
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class TDF_Data;
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class TCollection_HAsciiString;
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class TCollection_HExtendedString;
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//! Root class for a temporary persistent object that reads data from a file
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//! and then creates transient object using the data.
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class StdObjMgt_Persistent : public Standard_Transient
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{
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public:
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Standard_EXPORT StdObjMgt_Persistent();
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//! Derived class instance create function.
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typedef Handle(StdObjMgt_Persistent) (*Instantiator)();
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//! Create a derived class instance.
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template <class Persistent>
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static Handle(StdObjMgt_Persistent) Instantiate()
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{ return new Persistent; }
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//! Read persistent data from a file.
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Standard_EXPORT virtual void Read (StdObjMgt_ReadData& theReadData) = 0;
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//! Write persistent data to a file.
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Standard_EXPORT virtual void Write (StdObjMgt_WriteData& theWriteData) const = 0;
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typedef NCollection_Sequence<Handle(StdObjMgt_Persistent)> SequenceOfPersistent;
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//! Gets persistent child objects
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Standard_EXPORT virtual void PChildren (SequenceOfPersistent&) const = 0;
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//! Returns persistent type name
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Standard_EXPORT virtual Standard_CString PName() const = 0;
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//! Import transient document from the persistent data
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//! (to be overriden by document class;
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//! does nothing by default for other classes).
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Standard_EXPORT virtual void ImportDocument
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(const Handle(TDocStd_Document)& theDocument) const;
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//! Create an empty transient attribuite
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//! (to be overriden by attribute classes;
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//! does nothing and returns a null handle by default for other classes).
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Standard_EXPORT virtual Handle(TDF_Attribute) CreateAttribute();
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//! Get transient attribuite for the persistent data
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//! (to be overriden by attribute classes;
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//! returns a null handle by default for non-attribute classes).
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Standard_EXPORT virtual Handle(TDF_Attribute) GetAttribute() const;
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//! Import transient attribuite from the persistent data
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//! (to be overriden by attribute classes;
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//! does nothing by default for non-attribute classes).
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Standard_EXPORT virtual void ImportAttribute();
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//! Get referenced ASCII string
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//! (to be overriden by ASCII string class;
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//! returns a null handle by default for other classes).
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Standard_EXPORT virtual Handle(TCollection_HAsciiString) AsciiString() const;
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//! Get referenced extended string
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//! (to be overriden by extended string class;
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//! returns a null handle by default for other classes).
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Standard_EXPORT virtual Handle(TCollection_HExtendedString) ExtString() const;
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//! Get a label expressed by referenced extended string
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//! (to be overriden by extended string class;
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//! returns a null label by default for other classes).
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Standard_EXPORT virtual TDF_Label Label (const Handle(TDF_Data)& theDF) const;
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//! Returns the assigned persistent type number
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Standard_Integer TypeNum() const { return myTypeNum; }
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//! Assigns a persistent type number to the object
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void TypeNum(Standard_Integer theTypeNum) { myTypeNum = theTypeNum; }
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//! Returns the object reference number
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Standard_Integer RefNum() const { return myRefNum; }
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//! Sets an object reference number
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void RefNum(Standard_Integer theRefNum) { myRefNum = theRefNum; }
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private:
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Standard_Integer myTypeNum;
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Standard_Integer myRefNum;
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};
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#endif // _StdObjMgt_Persistent_HeaderFile
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