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DbSession.h

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//====================================================================
//      DbSession class definition
//--------------------------------------------------------------------
//
//      Package    : DbCnv ( The LHCb Offline System)
//
//  Description: Definiiton of a database session and related classes
//
//      Author     : M.Frank
//====================================================================
#ifndef DBCNV_DBSESSION_H
#define DBCNV_DBSESSION_H

// Framework include files
#ifndef DBCNV_DBBASE_H
#include "GaudiDb/DbBase.h"
#endif // DBCNV_DBBASE_H

#ifndef DBCNV_DBFEDERATION_H
#include "GaudiDb/DbFederation.h"
#endif // DBCNV_DBFEDERATION_H

// Forward declarations
class DbSession;
class DbFederation;
class DbSessionImpl;
class IDbSession;
class IOODataBase;
template <class T> class dbHandle;
template <> class dbHandle<DbSession>;

template <> class dbHandle<DbSession> : public dbHandleBase<DbSession>    {
public:
  friend class DbSession;
  friend class DbSessionImplementation;
private:
  mutable DbAccessMode m_mode;
private:
  void switchPtr(_DataType* obj)  const;
  IDbSession* info()  const;
  dbHandle(DbSession* session);
public:
  dbHandle(unsigned char type);
  dbHandle(const dbHandle<DbSession>& copy);
  virtual ~dbHandle();
  dbHandle& operator=(const dbHandle<DbSession>& copy);
  DbAccessMode openMode()   const;
  const char* typeName()    const;
  DbResult open(IOODataBase* db, IMessageSvc* msg, DbAccessMode mode);
  DbResult close()   const;
  DbResult add(const std::string& name, DbFederation* fed)  const;
  DbFederation* find(const std::string& name)  const;
  DbResult remove(DbFederation* fed);
  IOODataBase* db();
  IMessageSvc* msgSvc();
};
#endif // DBCNV_DBSESSION_H

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