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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.
151 lines
5.4 KiB
C++
151 lines
5.4 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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#include <BinMDF_ADriver.hxx>
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#include <BinMDF_ADriverTable.hxx>
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#include <BinMDF_DataMapIteratorOfTypeADriverMap.hxx>
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#include <BinMDF_DerivedDriver.hxx>
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#include <BinMDF_StringIdMap.hxx>
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#include <Standard_NoSuchObject.hxx>
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#include <Standard_Type.hxx>
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#include <TCollection_HAsciiString.hxx>
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#include <TDF_DerivedAttribute.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(BinMDF_ADriverTable,Standard_Transient)
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//=======================================================================
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//function : BinMDF_ADriverTable
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//purpose : Constructor
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//=======================================================================
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BinMDF_ADriverTable::BinMDF_ADriverTable ()
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{
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}
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//=======================================================================
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//function : AddDriver
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//purpose : Adds a translation driver <theDriver>.
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//=======================================================================
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void BinMDF_ADriverTable::AddDriver
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(const Handle(BinMDF_ADriver)& theDriver)
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{
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const Handle(Standard_Type)& aType = theDriver->SourceType();
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myMap.Bind (aType, theDriver);
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}
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//=======================================================================
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//function : AddDerivedDriver
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//purpose :
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//=======================================================================
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void BinMDF_ADriverTable::AddDerivedDriver (const Handle(TDF_Attribute)& theInstance)
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{
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const Handle(Standard_Type)& anInstanceType = theInstance->DynamicType();
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if (!myMap.IsBound (anInstanceType)) // no direct driver, use a derived one
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{
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for (Handle(Standard_Type) aType = anInstanceType->Parent(); !aType.IsNull(); aType = aType->Parent())
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{
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if (myMap.IsBound (aType))
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{
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Handle(BinMDF_DerivedDriver) aDriver = new BinMDF_DerivedDriver (theInstance, myMap (aType));
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myMap.Bind (anInstanceType, aDriver);
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return;
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}
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}
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}
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}
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//=======================================================================
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//function : AddDerivedDriver
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//purpose :
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//=======================================================================
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const Handle(Standard_Type)& BinMDF_ADriverTable::AddDerivedDriver (Standard_CString theDerivedType)
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{
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if (Handle(TDF_Attribute) anInstance = TDF_DerivedAttribute::Attribute (theDerivedType))
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{
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AddDerivedDriver (anInstance);
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return anInstance->DynamicType();
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}
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static const Handle(Standard_Type) aNullType;
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return aNullType;
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}
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//=======================================================================
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//function : AssignIds
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//purpose : 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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//=======================================================================
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void BinMDF_ADriverTable::AssignIds
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(const TColStd_IndexedMapOfTransient& theTypes)
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{
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myMapId.Clear();
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Standard_Integer i;
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for (i=1; i <= theTypes.Extent(); i++) {
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Handle(Standard_Type) aType (Handle(Standard_Type)::DownCast (theTypes(i)));
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if (myMap.IsBound (aType)) {
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myMapId.Bind (aType, i);
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}
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else {
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throw Standard_NoSuchObject((TCollection_AsciiString("BinMDF_ADriverTable::AssignIds : ") +
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"the type " + aType->Name() + " has not been registered").ToCString());
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}
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}
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}
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//=======================================================================
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//function : AssignIds
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//purpose : 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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//=======================================================================
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void BinMDF_ADriverTable::AssignIds
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(const TColStd_SequenceOfAsciiString& theTypeNames)
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{
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myMapId.Clear();
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// first prepare the data map (TypeName => TypeID) for input types
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BinMDF_StringIdMap aStringIdMap;
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Standard_Integer i;
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for (i=1; i <= theTypeNames.Length(); i++) {
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const TCollection_AsciiString& aTypeName = theTypeNames(i);
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aStringIdMap.Bind (aTypeName, i);
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}
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// and now associate the names with the registered types
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BinMDF_DataMapIteratorOfTypeADriverMap it (myMap);
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for (; it.More(); it.Next()) {
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const Handle(Standard_Type)& aType = it.Key();
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const Handle(BinMDF_ADriver)& aDriver = it.Value();
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const TCollection_AsciiString& aTypeName = aDriver->TypeName();
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if (aStringIdMap.IsBound(aTypeName)) {
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i = aStringIdMap(aTypeName);
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myMapId.Bind (aType, i);
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}
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}
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// try to add derived drivers for attributes not found in myMap
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for (BinMDF_StringIdMap::Iterator aStrId (aStringIdMap); aStrId.More(); aStrId.Next())
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{
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if (!myMapId.IsBound2 (aStrId.Value()))
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{
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if (Handle(Standard_Type) anAdded = AddDerivedDriver (aStrId.Key().ToCString()))
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{
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myMapId.Bind (anAdded, aStrId.Value());
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}
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}
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}
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}
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