DBObjPtr.h

/**************************************************************************
 * BASF2 (Belle Analysis Framework 2)                                     *
 * Copyright(C) 2015-2018 Belle II Collaboration                          *
 *                                                                        *
 * Author: The Belle II Collaboration                                     *
 * Contributors: Thomas Kuhr, Martin Ritter                               *
 *                                                                        *
 * This software is provided "as is" without any warranty.                *
 **************************************************************************/
#pragma once
 
#include <framework/database/DBAccessorBase.h>
 
namespace Belle2 {
  template<class T> class DBObjPtr: public DBAccessorBase {
  public:
 
    explicit DBObjPtr(const std::string& name = "", bool required = true):
      DBAccessorBase(DBStore::objectName<T>(name), T::Class(), false, required) {}
 
    inline const T& operator *()  const {return *getObject<T>(); }  
    inline const T* operator ->() const {return getObject<T>(); }   
  };
 
  template<class T> class OptionalDBObjPtr: public DBObjPtr<T> {
  public:
    explicit OptionalDBObjPtr(const std::string& name = ""): DBObjPtr<T>(name, false) {}
  };
}