0027932: Improvement of standard attributes usability.

[occt.git] / src / BinMDataStd / BinMDataStd_IntegerDriver.cxx

// Created on: 2002-10-30
// Created by: Michael SAZONOV
// Copyright (c) 2002-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.


#include <BinMDataStd_IntegerDriver.hxx>
#include <BinObjMgt_Persistent.hxx>
#include <CDM_MessageDriver.hxx>
#include <Standard_Type.hxx>
#include <TDataStd_Integer.hxx>
#include <TDF_Attribute.hxx>
#include <BinMDataStd.hxx>

IMPLEMENT_STANDARD_RTTIEXT(BinMDataStd_IntegerDriver,BinMDF_ADriver)

//=======================================================================
//function : BinMDataStd_IntegerDriver
//purpose  : Constructor
//=======================================================================
BinMDataStd_IntegerDriver::BinMDataStd_IntegerDriver
                        (const Handle(CDM_MessageDriver)& theMsgDriver)
     : BinMDF_ADriver (theMsgDriver, STANDARD_TYPE(TDataStd_Integer)->Name())
{
}

//=======================================================================
//function : NewEmpty
//purpose  : 
//=======================================================================

Handle(TDF_Attribute) BinMDataStd_IntegerDriver::NewEmpty() const
{
  return new TDataStd_Integer();
}

//=======================================================================
//function : Paste
//purpose  : persistent -> transient (retrieve)
//=======================================================================

Standard_Boolean BinMDataStd_IntegerDriver::Paste
                                (const BinObjMgt_Persistent&  theSource,
                                 const Handle(TDF_Attribute)& theTarget,
                                 BinObjMgt_RRelocationTable&  ) const
{
  Handle(TDataStd_Integer) anAtt = Handle(TDataStd_Integer)::DownCast(theTarget);
  Standard_Integer aValue;
  Standard_Boolean ok = theSource >> aValue;
  if (ok)
    anAtt->Set(aValue);
  if(BinMDataStd::DocumentVersion() > 8) { // process user defined guid
	const Standard_Integer& aPos = theSource.Position();
	Standard_GUID aGuid;
	ok = theSource >> aGuid;	
	if (!ok) {
	  theSource.SetPosition(aPos);	  
	  anAtt->SetID(TDataStd_Integer::GetID());
	  ok = Standard_True;
	} else {	  
	  anAtt->SetID(aGuid);
	}
  } else 
	anAtt->SetID(TDataStd_Integer::GetID());
  return ok;
}

//=======================================================================
//function : Paste
//purpose  : transient -> persistent (store)
//=======================================================================

void BinMDataStd_IntegerDriver::Paste (const Handle(TDF_Attribute)& theSource,
                                       BinObjMgt_Persistent&        theTarget,
                                       BinObjMgt_SRelocationTable&  ) const
{
  Handle(TDataStd_Integer) anAtt = Handle(TDataStd_Integer)::DownCast(theSource);
  theTarget << anAtt->Get();
  // process user defined guid
  if(anAtt->ID() != TDataStd_Integer::GetID()) 
	theTarget << anAtt->ID();
}