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DbDefObject.h

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//====================================================================
//      DbDefObject definition
//--------------------------------------------------------------------
//
//  Package    : DbCnv  ( The LHCb Offline System)
//
//  Description: Definition of default Gaudi-persistable object
//
//  Author     : M.Frank
//  History    :
// +---------+----------------------------------------------+---------
// |    Date |                 Comment                      | Who     
// +---------+----------------------------------------------+---------
// | 11/07/99| Initial version                              | MF
// +---------+----------------------------------------------+---------
//====================================================================

#ifndef DBCNV_DBDEFOBJECT_H
#define DBCNV_DBDEFOBJECT_H 1

// Framework include files
#include "DbHandle.h"
#include "GaudiKernel/StatusCode.h"
#include <new>

// Forward declarations
class IDataDirectory;
class IOpaqueAddress;
class StreamBuffer;
class GenericLink;
class DataObject;

// Forward declarations
class IService;
class ISvcLocator;
class IMessageSvc;
class IObjManager;
class IDataBaseMgr;
class IAddressCreator;
class IDataProviderSvc;
class IConversionSvc;
class IDataBaseHandler;
class DbDefObject;
class DbPersistent;
template <class T>  class DbWrapper;
template <>  class DbWrapper<DbDefObject>;

class DbDefObject : public DbObject  {
  friend DbPersistent;
  friend DbWrapper<DbDefObject>;
public:
  class HelperServices    {
  public:
    ISvcLocator*           SvcLocator;
    IMessageSvc*           MessageSvc;
    IDataProviderSvc*      DataSvc;
    IConversionSvc*        PersSvc;
    IConversionSvc*        CnvSvc;
    IDataBaseMgr*          DbaseMgr;
    IAddressCreator*       AddrCreator;
    IObjManager*           ObjManager;
    HelperServices()    {
      clear();
    }
    void clear()    {
      SvcLocator = 0;
      MessageSvc = 0;
      DataSvc    = 0;
      CnvSvc     = 0;
      PersSvc    = 0;
      AddrCreator= 0;
      DbaseMgr   = 0;
      ObjManager = 0;
    }
  };
protected:
  long m_numSymbolic;
public:
  DbDefObject() : m_numSymbolic(0)   {
  }
  virtual ~DbDefObject()    {
  }
  static DbObject* create(void* buffer);
  void setNumSymLink(long length)    {
    m_numSymbolic = length;
  }
  long numSymLink()   const   {
    return m_numSymbolic;
  }
  virtual StatusCode beginTransientUpdate(HelperServices& /* helpers */, DataObject* /* pObject */ )    {
    return StatusCode::SUCCESS;
  }
  virtual StatusCode endTransientUpdate(HelperServices& /* helpers */ , DataObject* /* pObject */)    {
    return StatusCode::SUCCESS;
  }
  virtual StatusCode doTransientUpdate(HelperServices& /* helpers */ , DataObject* /* pObject */)    {
    return StatusCode::SUCCESS;
  }
  virtual StatusCode beginPersistentUpdate(HelperServices& /* helpers */ , const DataObject* /* pObject */)    {
    return StatusCode::SUCCESS;
  }
  virtual StatusCode endPersistentUpdate(HelperServices& /* helpers */ , const DataObject* /* pObject */)    {
    return StatusCode::SUCCESS;
  }
  virtual StatusCode doPersistentUpdate(HelperServices& /* helpers */ , const DataObject* /* pObject */)   {
    return StatusCode::SUCCESS;
  }
};

// Static creator
inline DbObject* DbDefObject::create(void* buffer) {
  return ::new(buffer) DbDefObject();
}

#endif  // DBCNV_DBDEFOBJECT_H

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