MetaReaderAlg.cxx

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/*
 * Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration.
 */
 
 
#include "MetaReaderAlg.h"
#include "DataModelTestDataCommon/S1.h"
#include "PersistentDataModel/DataHeader.h"
 
namespace DMTest {
 

MetaReaderAlg::MetaReaderAlg (const std::string &name, ISvcLocator *pSvcLocator)
  : AthReentrantAlgorithm (name, pSvcLocator),
    m_s1Key ("MetaS1"),
    m_cKey ("MetaC")
{
}
 

StatusCode MetaReaderAlg::initialize()
{
  ATH_CHECK( m_s1Key.initialize() );
  ATH_CHECK( m_cKey.initialize() );
  return StatusCode::SUCCESS;
}
 

StatusCode MetaReaderAlg::execute (const EventContext& ctx) const
{
  // Get proper dbkey.
  const DataHeader* thisDH = nullptr;
  ATH_CHECK( evtStore()->retrieve(thisDH, "EventSelector") );
  std::string sid = thisDH->begin()->getToken()->dbID().toString();
 
  // Make a new key with the correct dbkey.
  SG::ReadMetaHandleKey<DMTest::S1> s1Key (m_s1Key.key(), sid);
  ATH_CHECK( s1Key.initialize() );
  SG::ReadMetaHandle<DMTest::S1> s1 (s1Key, ctx);
  ATH_MSG_INFO ("MetaS1: {}", s1->m_x);
 
  // Make a new key with the correct dbkey.
  SG::ReadMetaHandleKey<DMTest::C> cKey (m_cKey.key(), sid);
  ATH_CHECK( cKey.initialize() );
  SG::ReadMetaHandle<DMTest::C> c (cKey, ctx);
  ATH_MSG_INFO ("MetaC: {} {}", c->anInt(), c->aFloat());
  return StatusCode::SUCCESS;
}
 
 
} // namespace DMTest