SysCopyHandle.h

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/*
  Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
*/

 
 
#ifndef SYSTEMATICS_HANDLES__SYS_COPY_HANDLE_H
#define SYSTEMATICS_HANDLES__SYS_COPY_HANDLE_H
 
#include <AnaAlgorithm/AnaAlgorithm.h>
#include <AsgDataHandles/ReadHandleKey.h>
#include <AsgDataHandles/VarHandleKey.h>
#include <AsgMessaging/AsgMessagingForward.h>
#include <AsgMessaging/MsgStream.h>
#include <AsgMessaging/StatusCode.h>
#include <AthContainers/CurrentContext.h>
#include <PATInterfaces/SystematicSet.h>
#include <SystematicsHandles/ISysHandleBase.h>
#include <SystematicsHandles/ISystematicsSvc.h>
#include <SystematicsHandles/SysListHandle.h>
#include <functional>
#include <string>
#include <type_traits>
#include <unordered_map>
 
namespace CP
{

 
  template<typename T> class SysCopyHandle final
    : public ISysObjectHandleBase, public asg::AsgMessagingForward
  {
  public:

    template<typename T2>
    SysCopyHandle (T2 *owner, const std::string& propertyName,
                   const std::string& propertyValue,
                   const std::string& propertyDescription);
 

    template<typename T2>
    SysCopyHandle (const std::string &inputName, const std::string &outputName, T2 *owner);
 

    virtual bool empty () const noexcept override;

    explicit operator bool () const noexcept;

    virtual std::string getNamePattern () const override;
 

    StatusCode initialize (SysListHandle& sysListHandle);
    StatusCode initialize (SysListHandle& sysListHandle, SG::AllowEmptyEnum);
 

    ::StatusCode getCopy (T*& object,
                          const CP::SystematicSet& sys,
                          const EventContext& ctx = Gaudi::Hive::currentContext()) const;
 
 

  private:
 
    virtual CP::SystematicSet getInputAffecting (const ISystematicsSvc& svc) const override;
    virtual StatusCode
    fillSystematics (const ISystematicsSvc& svc,
                     const CP::SystematicSet& fullAffecting,
                     const std::vector<CP::SystematicSet>& sysList) override;
    virtual StatusCode
    addDecorationDependency (const ISystematicsSvc& svc, const std::string& decoName, bool decoWrite) override;
 
 

  private:

    std::string m_inputName;

    std::string m_outputName;

    std::string m_typeName;

    struct SysData
    {
      std::function<StatusCode(MsgStream&, T*&, const EventContext&)> getCopy;
    };
    std::unordered_map<CP::SystematicSet,SysData> m_sysData;
 

    typedef std::decay<decltype(
      *(std::declval<EL::AnaAlgorithm>().evtStore()))>::type StoreType;

    StoreType *m_evtStore = nullptr;

    std::function<StoreType*()> m_evtStoreGetter;
 
#ifndef XAOD_STANDALONE
    std::function<void(const DataObjID&, Gaudi::DataHandle::Mode)> m_addAlgDependency;
#endif
  };
}
 
#include "SysCopyHandle.icc"
 
#endif