AthLinks/DataLink.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
 
/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
#ifndef ATHLINKS_DATALINK_H
#define ATHLINKS_DATALINK_H
 
 
#include "AthLinks/DataLinkBase.h"
#include "AthenaKernel/ClassID_traits.h"
#include "AthenaKernel/DefaultKey.h"
class EventContext;
class IProxyDict;
 
 
template <class STORABLE>
class DataLink
  : public DataLinkBase
{
public:
  typedef STORABLE                      value_type;
  typedef STORABLE*                     pointer;
  typedef const STORABLE*               const_pointer;
  typedef STORABLE&                     reference;
  typedef const STORABLE&               const_reference;
 
  typedef DataLinkBase::ID_type ID_type;
 
  typedef DataLinkBase::sgkey_t sgkey_t;
 
 
  static const CLID& classID();
 
 
  //========================================================================
 
 
  DataLink();
 
 
  DataLink(const_reference data, IProxyDict* sg=0);
 
 
  DataLink(const_reference data, const EventContext& ctx);
 
 
  DataLink(const_pointer pdata, IProxyDict* sg=0);
 
 
  DataLink(const_pointer pdata, const EventContext& ctx);
 
 
  DataLink(const ID_type& dataID, IProxyDict* sg=0);
 
 
  DataLink(const ID_type& dataID, const EventContext& ctx);
 
 
  DataLink(sgkey_t key, IProxyDict* sg=0);
 
 
  DataLink(sgkey_t key, const EventContext& ctx);
 
 
  DataLink(sgkey_t key, const SG::DataProxyHolder& holder);
 
 
  //========================================================================
 
 
  void toStorableObject(const_reference data, IProxyDict* sg = 0);
 
 
  void toStorableObject(const_reference data, const EventContext& ctx);
 
 
  void toIdentifiedObject(const ID_type& dataID, IProxyDict* sg = 0);
 
 
  void toIdentifiedObject(const ID_type& dataID, const EventContext& ctx);
 
 
  void toIdentifiedObject(sgkey_t key, IProxyDict* sg = 0);
 
 
  void toIdentifiedObject(sgkey_t key, const EventContext& ctx);
 
 
  void toDefaultObject (IProxyDict* sg = 0);
 
 
  void toDefaultObject (const EventContext& ctx);
 
 
  bool toTransient (IProxyDict* sg = 0);
 
 
  bool toTransient (const EventContext& ctx);
 
 
  bool toTransient (const ID_type& dataID, IProxyDict* sg = 0);
  
 
  bool toTransient (const ID_type& dataID, const EventContext& ctx);
  
 
 
  //========================================================================
 
  const_pointer getDataPtr() const;
 
 
  pointer getDataNonConstPtr();
 
 
  const_reference operator* () const;
 
 
  const_pointer operator->() const;
 
 
  operator const_pointer() const;
 
 
  const_pointer cptr() const;
 
 
  bool isValid() const; 
 
 
 
  bool operator!() const;
 
 
  // Inherited from base class:
  //   bool isDefault() const;
  //   const ID_type& dataID() const;
  //   sgkey_t key() const;
  //   void clear();
  //   SG::DataProxy* proxy (bool nothrow = false) const;
  //   IProxyDict* source() const;
  //   bool toPersistent();
  //   bool toPersistentNoRemap();
  //   bool operator== (const DataLinkBase& other) const;
  //   bool operator!= (const DataLinkBase& other) const;
 
 
private:
  const void* storable() const;
 
 
  void* storableNonConst();
};
 
 
#include "AthLinks/DataLink.icc"
 
 
#endif // not ATHLINKS_DATALINK_H