SmartDataLocator.h

Go to the documentation of this file.

/***********************************************************************************\
* (c) Copyright 1998-2019 CERN for the benefit of the LHCb and ATLAS collaborations *
*                                                                                   *
* This software is distributed under the terms of the Apache version 2 licence,     *
* copied verbatim in the file "LICENSE".                                            *
*                                                                                   *
* In applying this licence, CERN does not waive the privileges and immunities       *
* granted to it by virtue of its status as an Intergovernmental Organization        *
* or submit itself to any jurisdiction.                                             *
\***********************************************************************************/
//  ====================================================================
//  SmartDataLocator.h
//  --------------------------------------------------------------------
//
//  Package    : GaudiKernel ( The LHCb Offline System)
//
//  Description: Implementation of a smart pointer class to access
//               easily (and efficiently) data stores.
//
//  Author     : M.Frank
//  ====================================================================
#ifndef GAUDIKERNEL_SMARTDATALOCATOR_H
#define GAUDIKERNEL_SMARTDATALOCATOR_H 1
 
// Framework include files
#include "GaudiKernel/SmartDataPtr.h"
 
template <class TYPE>
class SmartDataLocator : public SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader> {
public:
  SmartDataLocator( IDataProviderSvc* pService, const std::string& fullPath )
      : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( pService, 0, fullPath ) {}
 
  SmartDataLocator( IDataProviderSvc* pService, IRegistry* pDirectory )
      : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( pService, pDirectory, "" ) {}
 
  SmartDataLocator( IDataProviderSvc* pService, DataObject* pObject, const std::string& path )
      : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( pService, 0, path ) {
    if ( 0 != pObject ) { this->m_pDirectory = pObject->registry(); }
  }
 
  SmartDataLocator( SmartDataObjectPtr& refObject, IRegistry* pDirectory )
      : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( refObject.service(), pDirectory, "" ) {}
 
  SmartDataLocator( SmartDataObjectPtr& refObject, const std::string& path )
      : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( refObject.service(), refObject.directory(), path ) {}
 
  virtual ~SmartDataLocator() {}
 
  template <class OTHER>
  SmartDataPtr<OTHER>& operator=( OTHER* pObj ) {
    this->m_pObject = dynamic_cast<TYPE*>( pObj );
    return *this;
  }
 
  template <class OTHER>
  SmartDataPtr<OTHER>& operator=( const OTHER* pObj ) {
    this->m_pObject = dynamic_cast<TYPE*>( const_cast<OTHER*>( pObj ) );
    return *this;
  }
};
 
#endif // GAUDIKERNEL_SMARTDATALOCATOR_H