SmartDataPtr.h

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//  ====================================================================
//  SmartDataPtr.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_SMARTDATAPTR_H
#define GAUDIKERNEL_SMARTDATAPTR_H 1
 
// Framework include files
#include <GaudiKernel/DataObject.h>
#include <GaudiKernel/SmartDataStorePtr.h>
 
template <class TYPE>
class SmartDataPtr : public SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader> {
public:
#if !defined( __ICC ) && !defined( __COVERITY__ )
  // icc and Coverity do not like this line, they fail with
  // SmartDataPtr.h(147): internal error: assertion failed: add_symbol_to_overload_list:
  //   symbol not in symbol header list (shared/edgcpfe/symbol_tbl.c, line 4804)
  using SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>::operator=;
#endif
 
  SmartDataPtr( IDataProviderSvc* pService, std::string fullPath )
      : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( pService, nullptr, std::move( fullPath ) ) {}
 
  SmartDataPtr( IDataProviderSvc* pService, IRegistry* pDirectory )
      : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( pService, pDirectory, "" ) {}
 
  SmartDataPtr( IDataProviderSvc* pService, DataObject* pObject, std::string path )
      : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( pService, nullptr, std::move( path ) ) {
    if ( pObject ) this->m_pRegistry = pObject->registry();
  }
 
  SmartDataPtr( SmartDataObjectPtr& refObject, IRegistry* pDirectory )
      : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( refObject.service(), pDirectory, "" ) {}
 
  SmartDataPtr( SmartDataObjectPtr& refObject, std::string path )
      : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( refObject.service(), refObject.directory(),
                                                                   std::move( path ) ) {}
 
  SmartDataPtr( const SmartDataObjectPtr& copy ) : SmartDataStorePtr<TYPE, SmartDataObjectPtr::ObjectLoader>( copy ) {}
 
  virtual ~SmartDataPtr() = default;
 
  template <class OTHER>
  SmartDataPtr& operator=( OTHER* pObj ) {
    this->m_pObject = dynamic_cast<TYPE*>( pObj );
    return *this;
  }
 
  template <class OTHER>
  SmartDataPtr& operator=( const OTHER* pObj ) {
    this->m_pObject = dynamic_cast<TYPE*>( const_cast<OTHER*>( pObj ) );
    return *this;
  }
};
 
#endif // GAUDIKERNEL_SMARTDATAPTR_H