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SmartRefBase.cpp

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// $Header: /nfs/slac/g/glast/ground/cvs/GaudiKernel/src/Lib/SmartRefBase.cpp,v 1.1.1.1 2001/04/18 18:14:18 tlindner Exp $
//      ====================================================================
//      SmartRefBase.cpp
//      --------------------------------------------------------------------
//
//      Package   : Root conversion example
//
//      Author    : Markus Frank
//
//      ====================================================================
#define KERNEL_SMARTREFBASE_CPP 1
// $Header: /nfs/slac/g/glast/ground/cvs/GaudiKernel/src/Lib/SmartRefBase.cpp,v 1.1.1.1 2001/04/18 18:14:18 tlindner Exp $

// Framework include files
#include "GaudiKernel/IDataProviderSvc.h"

#include "GaudiKernel/DataObject.h"
#include "GaudiKernel/StreamBuffer.h"
#include "GaudiKernel/SmartRefBase.h"
#include "GaudiKernel/ContainedObject.h"
#include "GaudiKernel/ObjectContainerBase.h"

#include "GaudiKernel/TransientStore.h"

typedef ObjectContainerBase _Container;

const ContainedObject* SmartRefBase::accessData(const ContainedObject*)   const   {
  if ( m_hintID != StreamBuffer::INVALID && m_linkID != StreamBuffer::INVALID && 0 != m_data )   {
    const _Container* cnt = dynamic_cast<const _Container*>(accessData(m_data));
    return (cnt==0) ? 0 : cnt->containedObject(m_linkID);
  }
  return 0;
}

const DataObject* SmartRefBase::accessData(const DataObject*)   const   {
  DataObject* source  = const_cast<DataObject*>(m_data);            
  DataObject* target = 0;
  if ( m_hintID != StreamBuffer::INVALID && source != 0 )   {
    DataObject::Link* link = source->symLink(m_hintID);
    TransientStore*   store = source->store();
    if ( 0 != link )  {
      IDataProviderSvc* datasvc = store->dataSvc();
      target = link->object();
      if ( 0 == target && 0 != datasvc )    {
        if ( 0 != datasvc )   {
          StatusCode status = datasvc->retrieveObject(link->path(), target);
          if ( status.isSuccess() )   {
            source->addLink(link->path(), target);
          }
        }
      }
      // Nothing we can do on failure....
      if ( 0 != target && 0 != datasvc )   {
        // datasvc->updateObject(source->directory());
      }
    }
  }
  return target;
}

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