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0030773: Application Framework - To allow to inherit existing attributes to reuse persistence mechanisms

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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.
This commit is contained in:
mpv
2020-06-19 23:12:17 +03:00
committed by abv
parent 59e11a2f75
commit c99ad5d760
202 changed files with 1438 additions and 8261 deletions
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14
src/XmlMDataStd/XmlMDataStd.hxx
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@@ -21,21 +21,18 @@
#include <Standard_Integer.hxx>
class XmlMDF_ADriverTable;
class Message_Messenger;
class XmlMDataStd_NameDriver;
class XmlMDataStd_GenericExtStringDriver;
class XmlMDataStd_IntegerDriver;
class XmlMDataStd_RealDriver;
class XmlMDataStd_IntegerArrayDriver;
class XmlMDataStd_RealArrayDriver;
class XmlMDataStd_ExtStringArrayDriver;
class XmlMDataStd_UAttributeDriver;
class XmlMDataStd_DirectoryDriver;
class XmlMDataStd_CommentDriver;
class XmlMDataStd_VariableDriver;
class XmlMDataStd_ExpressionDriver;
class XmlMDataStd_RelationDriver;
class XmlMDataStd_NoteBookDriver;
class XmlMDataStd_TreeNodeDriver;
class XmlMDataStd_TickDriver;
class XmlMDataStd_GenericEmptyDriver;
class XmlMDataStd_IntegerListDriver;
class XmlMDataStd_RealListDriver;
class XmlMDataStd_ExtStringListDriver;
@@ -73,21 +70,18 @@ private:
friend class XmlMDataStd_NameDriver;
friend class XmlMDataStd_GenericExtStringDriver;
friend class XmlMDataStd_IntegerDriver;
friend class XmlMDataStd_RealDriver;
friend class XmlMDataStd_IntegerArrayDriver;
friend class XmlMDataStd_RealArrayDriver;
friend class XmlMDataStd_ExtStringArrayDriver;
friend class XmlMDataStd_UAttributeDriver;
friend class XmlMDataStd_DirectoryDriver;
friend class XmlMDataStd_CommentDriver;
friend class XmlMDataStd_VariableDriver;
friend class XmlMDataStd_ExpressionDriver;
friend class XmlMDataStd_RelationDriver;
friend class XmlMDataStd_NoteBookDriver;
friend class XmlMDataStd_TreeNodeDriver;
friend class XmlMDataStd_TickDriver;
friend class XmlMDataStd_GenericEmptyDriver;
friend class XmlMDataStd_IntegerListDriver;
friend class XmlMDataStd_RealListDriver;
friend class XmlMDataStd_ExtStringListDriver;