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-- File: VStream_VDriverBase.cdl
-- Created: Mon Nov 25 10:50:21 1996
-- Author: Christophe LEYNADIER
-- <cle@parigox.paris1.matra-dtv.fr>
---Copyright: Matra Datavision 1996
deferred class BaseDriver from Storage
---Purpose: Root class for drivers. A driver assigns a physical container
-- to data to be stored or retrieved, for instance a file.
-- The FSD package provides two derived concrete classes :
-- - FSD_File is a general driver which defines a
-- file as the container of data.
uses Position from Storage,
AsciiString from TCollection,
OpenMode from Storage,
Error from Storage,
ExtendedString from TCollection,
SequenceOfAsciiString from TColStd,
SequenceOfExtendedString from TColStd
raises StreamTypeMismatchError from Storage,
StreamFormatError from Storage,
StreamWriteError from Storage,
StreamExtCharParityError from Storage
is
Delete ( me : out ) ;
---C++: alias "Standard_EXPORT virtual ~Storage_BaseDriver(){Delete();}"
Initialize;
Open(me : in out; aName : AsciiString from TCollection; aMode : OpenMode from Storage) returns Error from Storage is deferred;
Name(me) returns AsciiString from TCollection;
---C++: inline
OpenMode(me) returns OpenMode from Storage;
---C++: inline
IsEnd(me : in out) returns Boolean from Standard is deferred;
---Purpose: returns True if we are at end of the stream
Tell( me : in out ) returns Position from Storage is deferred;
---Purpose: return position in the file. Return -1 upon error.
-- INFO SECTION
-- write
--
BeginWriteInfoSection(me : in out) returns Error from Storage is deferred;
WriteInfo(me : in out; nbObj : Integer from Standard;
dbVersion : AsciiString from TCollection;
date : AsciiString from TCollection;
schemaName : AsciiString from TCollection;
schemaVersion : AsciiString from TCollection;
appName : ExtendedString from TCollection;
appVersion : AsciiString from TCollection;
objectType : ExtendedString from TCollection;
userInfo : SequenceOfAsciiString from TColStd)
raises StreamWriteError
is deferred;
EndWriteInfoSection(me : in out) returns Error from Storage is deferred;
-- read
--
BeginReadInfoSection(me : in out) returns Error from Storage
is deferred;
ReadInfo(me : in out; nbObj : in out Integer from Standard;
dbVersion : in out AsciiString from TCollection;
date : in out AsciiString from TCollection;
schemaName : in out AsciiString from TCollection;
schemaVersion : in out AsciiString from TCollection;
appName : in out ExtendedString from TCollection;
appVersion : in out AsciiString from TCollection;
objectType : in out ExtendedString from TCollection;
userInfo : in out SequenceOfAsciiString from TColStd)
raises StreamTypeMismatchError,StreamExtCharParityError
is deferred;
EndReadInfoSection(me : in out) returns Error from Storage
is deferred;
-- COMMENTS SECTION
-- write
--
BeginWriteCommentSection(me : in out) returns Error from Storage is deferred;
WriteComment(me : in out; userComments : SequenceOfExtendedString from TColStd)
raises StreamWriteError is deferred;
EndWriteCommentSection(me : in out) returns Error from Storage is deferred;
-- read
--
BeginReadCommentSection(me : in out) returns Error from Storage is deferred;
ReadComment(me : in out; userComments : in out SequenceOfExtendedString from TColStd)
raises StreamTypeMismatchError,StreamExtCharParityError
is deferred;
EndReadCommentSection(me : in out) returns Error from Storage is deferred;
-- TYPE SECTION
-- write
--
BeginWriteTypeSection(me : in out) returns Error from Storage is deferred;
SetTypeSectionSize(me : in out; aSize : Integer from Standard)
raises StreamWriteError
is deferred;
WriteTypeInformations(me : in out; typeNum : Integer from Standard; typeName : AsciiString from TCollection)
raises StreamWriteError
is deferred;
EndWriteTypeSection(me : in out) returns Error from Storage is deferred;
-- read
--
BeginReadTypeSection(me : in out) returns Error from Storage
is deferred;
TypeSectionSize(me : in out) returns Integer from Standard
raises StreamTypeMismatchError
is deferred;
ReadTypeInformations(me : in out; typeNum : in out Integer from Standard; typeName : in out AsciiString from TCollection)
raises StreamTypeMismatchError
is deferred;
EndReadTypeSection(me : in out) returns Error from Storage
is deferred;
-- ROOT SECTION
-- write
--
BeginWriteRootSection(me : in out) returns Error from Storage is deferred;
SetRootSectionSize(me : in out; aSize : Integer from Standard)
raises StreamWriteError
is deferred;
WriteRoot(me : in out; rootName : AsciiString from TCollection; aRef : Integer from Standard; aType : AsciiString from TCollection)
raises StreamWriteError
is deferred;
EndWriteRootSection(me : in out) returns Error from Storage is deferred;
-- read
--
BeginReadRootSection(me : in out) returns Error from Storage
is deferred;
RootSectionSize(me : in out) returns Integer from Standard
raises StreamTypeMismatchError
is deferred;
ReadRoot(me : in out; rootName : in out AsciiString from TCollection; aRef : in out Integer from Standard; aType : in out AsciiString from TCollection)
raises StreamTypeMismatchError
is deferred;
EndReadRootSection(me : in out) returns Error from Storage
is deferred;
-- REF SECTION
-- write
--
BeginWriteRefSection(me : in out) returns Error from Storage is deferred;
SetRefSectionSize(me : in out; aSize : Integer from Standard)
raises StreamWriteError
is deferred;
WriteReferenceType(me : in out; reference : Integer from Standard; typeNum : Integer from Standard)
raises StreamWriteError
is deferred;
EndWriteRefSection(me : in out) returns Error from Storage is deferred;
-- read
--
BeginReadRefSection(me : in out) returns Error from Storage
is deferred;
RefSectionSize(me : in out) returns Integer from Standard
raises StreamTypeMismatchError
is deferred;
ReadReferenceType(me : in out; reference : in out Integer from Standard; typeNum : in out Integer from Standard)
raises StreamTypeMismatchError
is deferred;
EndReadRefSection(me : in out) returns Error from Storage
is deferred;
-- DATA SECTION
-- write
--
BeginWriteDataSection(me : in out) returns Error from Storage is deferred;
WritePersistentObjectHeader(me : in out; aRef : Integer from Standard; aType : Integer from Standard)
raises StreamWriteError
is deferred;
BeginWritePersistentObjectData(me : in out)
raises StreamWriteError
is deferred;
BeginWriteObjectData(me : in out)
raises StreamWriteError
is deferred;
EndWriteObjectData(me : in out)
raises StreamWriteError
is deferred;
EndWritePersistentObjectData(me : in out)
raises StreamWriteError
is deferred;
EndWriteDataSection(me : in out) returns Error from Storage is deferred;
-- read
--
BeginReadDataSection(me : in out) returns Error from Storage
is deferred;
ReadPersistentObjectHeader(me : in out; aRef : in out Integer from Standard; aType : in out Integer from Standard)
raises StreamTypeMismatchError,StreamFormatError
is deferred;
BeginReadPersistentObjectData(me : in out)
raises StreamFormatError
is deferred;
BeginReadObjectData(me : in out)
raises StreamFormatError
is deferred;
EndReadObjectData(me : in out)
raises StreamFormatError
is deferred;
EndReadPersistentObjectData(me : in out)
raises StreamFormatError
is deferred;
EndReadDataSection(me : in out) returns Error from Storage
is deferred;
-- jump to the next object to read
--
SkipObject(me : in out) is deferred;
--
PutReference(me : in out; aValue : Integer from Standard) returns BaseDriver from Storage
raises StreamWriteError
is deferred;
---C++: return &
PutCharacter(me : in out; aValue : Character from Standard) returns BaseDriver from Storage
raises StreamWriteError
is deferred;
---C++: alias operator <<
---C++: return &
PutExtCharacter(me : in out; aValue : ExtCharacter from Standard) returns BaseDriver from Storage
raises StreamWriteError
is deferred;
---C++: alias operator <<
---C++: return &
PutInteger(me : in out; aValue : Integer from Standard) returns BaseDriver from Storage
raises StreamWriteError
is deferred;
---C++: alias operator <<
---C++: return &
PutBoolean(me : in out; aValue : Boolean from Standard) returns BaseDriver from Storage
raises StreamWriteError
is deferred;
---C++: alias operator <<
---C++: return &
PutReal(me : in out; aValue : Real from Standard) returns BaseDriver from Storage
raises StreamWriteError
is deferred;
---C++: alias operator <<
---C++: return &
PutShortReal(me : in out; aValue : ShortReal from Standard) returns BaseDriver from Storage
raises StreamWriteError
is deferred;
---C++: alias operator <<
---C++: return &
GetReference(me : in out; aValue : in out Integer from Standard) returns BaseDriver from Storage
raises StreamTypeMismatchError
is deferred;
---C++: return &
GetCharacter(me : in out; aValue : in out Character from Standard) returns BaseDriver from Storage
raises StreamTypeMismatchError
is deferred;
---C++: alias operator >>
---C++: return &
GetExtCharacter(me : in out; aValue :in out ExtCharacter from Standard) returns BaseDriver from Storage
raises StreamTypeMismatchError
is deferred;
---C++: alias operator >>
---C++: return &
GetInteger(me : in out; aValue : in out Integer from Standard) returns BaseDriver from Storage
raises StreamTypeMismatchError
is deferred;
---C++: alias operator >>
---C++: return &
GetBoolean(me : in out; aValue : in out Boolean from Standard) returns BaseDriver from Storage
raises StreamTypeMismatchError
is deferred;
---C++: alias operator >>
---C++: return &
GetReal(me : in out; aValue :in out Real from Standard) returns BaseDriver from Storage
raises StreamTypeMismatchError
is deferred;
---C++: alias operator >>
---C++: return &
GetShortReal(me : in out; aValue : in out ShortReal from Standard) returns BaseDriver from Storage
raises StreamTypeMismatchError
is deferred;
---C++: alias operator >>
---C++: return &
Close(me : in out) returns Error from Storage is deferred;
-- PROTECTED
SetName(me : in out; aName : AsciiString from TCollection) is protected;
---C++: inline
SetOpenMode(me : in out; aMode : OpenMode from Storage) is protected;
---C++: inline
fields
myOpenMode : OpenMode from Storage;
myName : AsciiString from TCollection;
end;
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