TagCollectionStream.h

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/***********************************************************************************\
* (c) Copyright 1998-2025 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".                                            *
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* granted to it by virtue of its status as an Intergovernmental Organization        *
* or submit itself to any jurisdiction.                                             *
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#pragma once
 
// Required for inheritance
#include "OutputStream.h"
#include <GaudiKernel/NTuple.h>
 
// forward declarations
class GenericAddress;

class TagCollectionStream : public OutputStream {
protected:
  Gaudi::Property<std::string> m_addrLeaf{ this, "AddressLeaf", "/Event",
                                           "name of the address leaf in the transient event store" };
  Gaudi::Property<std::string> m_addrColName{ this, "AddressColumn", "Address",
                                              "name of the address column of the tag collection" };
  Gaudi::Property<std::string> m_collSvcName{ this, "TagCollectionSvc", "NTupleSvc", "name of the collection service" };
  Gaudi::Property<bool>        m_objectsFirst{ this, "ObjectsFirst", true,
                                        "flag to indicate that the objects should be written first" };
  Gaudi::Property<std::string> m_tagName{ this, "Collection", "", "name of the tag collection in the transient store" };

  INTupleItem* m_addrColumn = nullptr;
  std::string m_topLeafName;
  bool m_isTopLeaf = false;
  SmartIF<INTupleSvc> m_collectionSvc;
  std::unique_ptr<GenericAddress> m_addr;
  NTuple::Item<IOpaqueAddress*> m_item;
  StatusCode writeObjects() override;
  virtual StatusCode connectAddress();
  StatusCode writeData();
  StatusCode writeTuple();
  StatusCode writeRecord();
 
public:
  TagCollectionStream( const std::string& name, ISvcLocator* pSvcLocator );
  StatusCode initialize() override;
  StatusCode finalize() override;
};