SGWrite.cxx

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
#include "SGWrite.h"
 
#include "MyDataObj.h"
#include "LinkObj.h"
#include "Tutorial_ClassDEF.h"
 
#include "GaudiKernel/ISvcLocator.h"
 
#include "AthLinks/DataLink.h"
#include "AthLinks/ElementLink.h"
 
#include "StoreGate/StoreGateSvc.h"
 
using namespace SGTutorial;
 
// CONSTRUCTOR:
 
SGWrite::SGWrite(const std::string& name, ISvcLocator* pSvcLocator) :
  AthAlgorithm(name, pSvcLocator), m_DataObjKey("foo")
{
  
  // Declare the properties
  // Get key to be given to Data Objects in TDS
 
  declareProperty("DataObjKey", m_DataObjKey);
 
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
 
StatusCode SGWrite::initialize()
{
 
  ATH_MSG_INFO ("in initialize()");
 
  // Print out the key of the data objects
 
  ATH_MSG_INFO ("MyDataObj key: " << m_DataObjKey);
 
  StatusCode sc = evtStore().retrieve();
  if (sc.isFailure())
  {
    ATH_MSG_ERROR ("Unable to retrieve pointer to StoreGate Service");
    return sc;
  }
 
  return StatusCode::SUCCESS;
 
 
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
 
StatusCode SGWrite::execute() {
 
  ATH_MSG_INFO ("in execute()");
 
  // PART1  Objective: 
  // Create a Data Object "MyDataObj" and record it in the TDS
 
  // Register "MyDataObj" 
 
  // set it as constant so that nobody can modify it anymore.
  // This will also allow the object to be persistified later on
  
 
  // PART2  Objective: 
  // Create a collection of objects : "MyElement".  Note that "MyElement"
  // does not inherits from ContainedObject.  Push MyElement into a
  // collection:  std::vector<MyElement>.
  // Register the std::vector<MyElement> into the StoreGate:
 
 
 
  // Register vector of "MyElement" 
 
  // set it as constant so that nobody can modify it anymore.
  // This will also allow the object to be persistified later on
 
  // PART3  Objective: 
  // Set up DataLinks .  Each instance of LinkObj contains a link
  // to a MyDataObj and one to a MyElement; 
  // Create data links for both and set them in a LinkObj object 
  // using the setObjLink and setContLink methods.
  // We will use the DataLinks in LinkObj later in SGRead to ensure that it
  // does return the correct objects they point to.
 
  //Instantiate a LinkObj
 
  //set the DataLink to a MyDataObj
 
  //set the ElementLink to the first element of the collection
 
  //Register the LinkObj in TDS:
 
 
  // set it as constant so that nobody can modify it anymore
  // This will also allow the object to be persistified later on
 
  // We are DONE!
 
  ATH_MSG_INFO ("registered all data");
  return StatusCode::SUCCESS;
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
 
StatusCode SGWrite::finalize() 
{
  ATH_MSG_INFO ("in finalize()");
  return StatusCode::SUCCESS;
}