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DbFederation.h

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//====================================================================
//      DbFederation and related class definitions
//--------------------------------------------------------------------
//
//      Package    : DbCnv ( The LHCb Offline System)
//      Author     : M.Frank
//====================================================================
#ifndef DBCNV_DBFEDERATION_H
#define DBCNV_DBFEDERATION_H

// Framework include files
#ifndef DBCNV_DBSESSION_H
#include "GaudiDb/DbSession.h"
#endif // DBCNV_DBSESSION_H
#ifndef DBCNV_DBDATABASE_H
#include "GaudiDb/DbDataBase.h"
#endif // DBCNV_DBDATABASE_H

// Forward declarations
class DbSession;
class DbDataBase;
class DbFederationImpl;
class IDbFederation;
template <class T> class dbHandle;

template <> class dbHandle<DbFederation> : public dbHandleBase<DbFederation> {
public:
  friend class DbFederation;
  friend class DbFederationImplementation;
private:
  mutable std::string  m_name;
  mutable DbAccessMode m_mode;
private:
  dbHandle(DbFederation* fed);
  void switchPtr(_DataType* obj)  const;
  IDbFederation* info()  const;
public:
  dbHandle() : m_mode(DbOOMs::READ)   {
  }
  dbHandle(unsigned char type)
  : m_mode(DbOOMs::READ)   {
    m_type = type;
  }
  dbHandle(const dbHandle<DbFederation>& copy)      
  : dbHandleBase<DbFederation>()
  {
    *this = copy;
  }
  virtual ~dbHandle()       {
    switchPtr( 0 );
  }
  dbHandle& operator=(const dbHandle<DbFederation>& copy)   {
    switchPtr( copy.m_ptr );
    m_name = copy.m_name;
    m_mode = copy.m_mode;
    m_type = copy.m_type;
    return *this;
  }
  DbAccessMode openMode()   const   {
    return m_mode;
  }
  const std::string& name()  const   {
    return m_name;
  }
  const char* typeName()    const;
  bool exist(const dbHandle<DbSession>& sessionH, const std::string& name)  const;
  DbResult open(const dbHandle<DbSession>& sessionH, const std::string& name, DbAccessMode mode)  const;
  DbResult close()   const;
  dbHandle<DbSession> containedIn()    const;
  long addRef()  const;
  long release()  const;
  bool existsDbase( const std::string& name )   const;
  DbResult add(const std::string& name, DbDataBase* db)  const;
  DbDataBase* find(const std::string& name)  const;
  DbResult remove(DbDataBase* db)  const;
  IOODataBase* db();
  IMessageSvc* msgSvc();
};

#endif // DBCNV_DBFEDERATION_H

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