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DataObject.h

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// $Header: /local/reps/Gaudi/GaudiKernel/GaudiKernel/DataObject.h,v 1.10 2008/11/12 23:39:47 marcocle Exp $
#ifndef GAUDIKERNEL_DATAOBJECT_H
#define GAUDIKERNEL_DATAOBJECT_H

// Framework include files
#include "GaudiKernel/ClassID.h"
#include "GaudiKernel/StatusCode.h"

// STL includes
#include <string>
#include <ostream>

// Forward declarations
class IOpaqueAddress;
class StreamBuffer;
class LinkManager;
class IRegistry;


// Definition of the CLID for this class
static const CLID CLID_DataObject = 1;

class DataObject   {
private:
  unsigned long       m_refCount;
  unsigned char       m_version;
  IRegistry*          m_pRegistry;
  LinkManager*        m_pLinkMgr;

public:
  DataObject();
  DataObject(const DataObject&);
  virtual ~DataObject();
  virtual unsigned long addRef();
  virtual unsigned long release();
  virtual const CLID& clID() const;
  static const CLID& classID();
  const std::string& name() const;

  virtual StreamBuffer& serialize(StreamBuffer& s);
  virtual StreamBuffer& serialize(StreamBuffer& s)  const;


  void setRegistry(IRegistry* pRegistry)    {
    m_pRegistry = pRegistry;
  }
  IRegistry* registry() const   {
    return m_pRegistry;
  }
  LinkManager* linkMgr()    const   {
    return m_pLinkMgr;
  }
  unsigned char version()    const  {
    return m_version;
  }
  void setVersion(unsigned char vsn)    {
    m_version = vsn;
  }
  unsigned long refCount() const {
    return m_refCount;
  }
  virtual std::ostream& fillStream( std::ostream& s ) const {
    s << "DataObject at " << std::hex << this;
    return s;
  }
  friend std::ostream& operator<< ( std::ostream& s, const DataObject& obj ) {
    return obj.fillStream(s);
  }
};

// Additional functions to support the Serialialization of objects in the transient store 

namespace Gaudi 
{  
  void pushCurrentDataObject(DataObject** pobjAddr);
  void popCurrentDataObject();
  DataObject* getCurrentDataObject();
}


#endif // GAUDIKERNEL_DATAOBJECT_H

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