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DbGenericConverter.h

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//====================================================================
//      DbGenericConverter definition
//--------------------------------------------------------------------
//
//      Package    : System ( The LHCb Offline System)
//
//  Description: Generic Db data converter
//
//      Author     : M.Frank
//====================================================================
#ifndef DBCNV_DBGENERICCONVERTER_H
#define DBCNV_DBGENERICCONVERTER_H
// $Header: /nfs/slac/g/glast/ground/cvs/GaudiDb/GaudiDb/DbGenericConverter.h,v 1.1.1.1 2001/04/18 21:13:34 tlindner Exp $

// Framework include files
#include "GaudiKernel/DataObject.h"
#include "DbCnvFactory.h"
#include "DbBaseConverter.h"

class DbGenericConverter : public DbBaseConverter     {
  friend CnvFactory<DbGenericConverter>;
protected:
  DbGenericConverter(const CLID& clid, IOODataBase* db, ISvcLocator* svc);
  virtual ~DbGenericConverter();
  void clearBuffers(DefHandle& objH);
  virtual dbHandle<DbObject> createPersistent(dbHandle<DbContainer>& cntH);

  virtual StatusCode beginPersistentUpdate( DefHandle& objH, const DataObject* pObject);
  virtual StatusCode endPersistentUpdate( DefHandle& objH, const DataObject* pObject);
  virtual StatusCode doPersistentUpdate( DefHandle& objH, const DataObject* pObject);

  virtual StatusCode beginTransientUpdate( DefHandle& objH, DataObject* pObject);
  virtual StatusCode endTransientUpdate( DefHandle& objH, DataObject* pObject);
  virtual StatusCode doTransientUpdate( DefHandle& objH, DataObject* pObject);
};

template <class T> class DbOOMsConverter : public DbGenericConverter   {
  friend DbOOMsCnvFactory< DbOOMsConverter < T > >;
public:
  DbOOMsConverter(IOODataBase* db, ISvcLocator* svc) 
    : DbGenericConverter(classID(), db, svc)
  {
  }
  virtual ~DbOOMsConverter()    {
  }
  virtual DataObject* createTransient()  {
    return new T();
  }
  static const CLID& classID()    {
    return T::classID();
  }
};

template <> class DbOOMsConverter<DataObject> : public DbGenericConverter   {
  friend DbOOMsCnvFactory< DbOOMsConverter < DataObject > >;
public:
  DbOOMsConverter(IOODataBase* db, ISvcLocator* svc) 
    : DbGenericConverter(classID(), db, svc)
  {
  }
  virtual ~DbOOMsConverter()    {
  }
  virtual DataObject* createTransient()  {
    return new DataObject();
  }
  static const CLID& classID()    {
    return CLID_DataObject;
  }
};


#define _ImplementConverter( Transient )                                \
static DbOOMsCnvFactory< DbOOMsConverter < Transient > > s_##DBOOMs##Transient##factory; \
const ICnvFactory& DbOOMs##Transient##CnvFactory = s_##DBOOMs##Transient##factory;

#define _ImplementNameSpaceConverter( NameSpace, Transient )                                \
static DbOOMsCnvFactory< DbOOMsConverter < NameSpace##::##Transient > > s_##DBOOMs##NameSpace##Transient##factory; \
const ICnvFactory& DbOOMs##NameSpace##Transient##CnvFactory = s_##DBOOMs##NameSpace##Transient##factory;

#endif    // DBCNV_DBGENERICCONVERTER_H

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