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c99ad5d760
Added possibility to inherit existing attributes if the same persistent fields are used. All methods that allow controlling the data model changes or getting some callbacks may be overridden in successor. They may have same GUIDs as a base class or new ones. Special macros IMPLEMENT_DERIVED_ATTRIBUTE and IMPLEMENT_DERIVED_ATTRIBUTE_WITH_TYPE must be used instead of standard Handle macro definition IMPLEMENT_STANDARD_RTTIEXT to register new derived attributes. Using this improvement several existing attributes from TDataStd, TDataXtd and XCAFDoc packages become inherited from other base attribute-classes. XML and Bin drivers of these attributes are removed. New base attribute classes are added: TDataStd_GenericEmpty and TDataStd_GenericExtString. This improvement does not change both present formats Bin and XML documents. The obsolete Standard scheme is not changed at all.
108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
// Created on: 2002-10-29
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// Created by: Michael SAZONOV
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// Copyright (c) 2002-2014 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 _BinMDF_ADriverTable_HeaderFile
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#define _BinMDF_ADriverTable_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <BinMDF_TypeADriverMap.hxx>
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#include <BinMDF_TypeIdMap.hxx>
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#include <Standard_Transient.hxx>
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#include <Standard_Type.hxx>
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#include <Standard_Integer.hxx>
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#include <TColStd_IndexedMapOfTransient.hxx>
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#include <TColStd_SequenceOfAsciiString.hxx>
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class BinMDF_ADriver;
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class BinMDF_ADriverTable;
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DEFINE_STANDARD_HANDLE(BinMDF_ADriverTable, Standard_Transient)
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//! A driver table is an object building links between
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//! object types and object drivers. In the
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//! translation process, a driver table is asked to
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//! give a translation driver for each current object
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//! to be translated.
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class BinMDF_ADriverTable : public Standard_Transient
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{
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public:
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//! Constructor
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Standard_EXPORT BinMDF_ADriverTable();
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//! Adds a translation driver <theDriver>.
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Standard_EXPORT void AddDriver (const Handle(BinMDF_ADriver)& theDriver);
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//! Adds a translation driver for the derived attribute. The base driver must be already added.
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//! @param theInstance is newly created attribute, detached from any label
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Standard_EXPORT void AddDerivedDriver (const Handle(TDF_Attribute)& theInstance);
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//! Adds a translation driver for the derived attribute. The base driver must be already added.
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//! @param theDerivedType is registered attribute type using IMPLEMENT_DERIVED_ATTRIBUTE macro
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Standard_EXPORT const Handle(Standard_Type)& AddDerivedDriver (Standard_CString theDerivedType);
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//! Assigns the IDs to the drivers of the given Types.
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//! It uses indices in the map as IDs.
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//! Useful in storage procedure.
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Standard_EXPORT void AssignIds (const TColStd_IndexedMapOfTransient& theTypes);
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//! Assigns the IDs to the drivers of the given Type Names;
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//! It uses indices in the sequence as IDs.
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//! Useful in retrieval procedure.
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Standard_EXPORT void AssignIds (const TColStd_SequenceOfAsciiString& theTypeNames);
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//! Gets a driver <theDriver> according to <theType>.
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//! Returns Type ID if the driver was assigned an ID; 0 otherwise.
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Standard_Integer GetDriver (const Handle(Standard_Type)& theType, Handle(BinMDF_ADriver)& theDriver);
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//! Returns a driver according to <theTypeId>.
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//! Returns null handle if a driver is not found
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Handle(BinMDF_ADriver) GetDriver (const Standard_Integer theTypeId);
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DEFINE_STANDARD_RTTIEXT(BinMDF_ADriverTable,Standard_Transient)
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protected:
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private:
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//! Assigns the ID to the driver of the Type
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void AssignId (const Handle(Standard_Type)& theType, const Standard_Integer theId);
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BinMDF_TypeADriverMap myMap;
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BinMDF_TypeIdMap myMapId;
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};
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#include <BinMDF_ADriverTable.lxx>
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#endif // _BinMDF_ADriverTable_HeaderFile
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