SelCreate.cpp

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/***********************************************************************************\
* (c) Copyright 1998-2019 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.                                             *
\***********************************************************************************/
// ============================================================================
// Include files
// ============================================================================
// GaudiKernel
// ============================================================================
#include "GaudiKernel/IRndmGenSvc.h"
#include "GaudiKernel/RndmGenerators.h"
// ============================================================================
// GaudiAlg
// ============================================================================
#include "GaudiAlg/GaudiAlgorithm.h"
// ============================================================================
// Local
// ============================================================================
#include "GaudiExamples/MyTrack.h"
// ============================================================================
#ifdef __ICC
// disable icc remark #2259: non-pointer conversion from "double" to "float" may lose significant bits
#  pragma warning( disable : 2259 )
#elif defined( WIN32 )
// disable warning
//   C4244: 'argument' : conversion from 'double' to 'float', possible loss of data
#  pragma warning( disable : 4244 )
#endif
 
namespace Gaudi {
  namespace Examples {
    class SelCreate : public GaudiAlgorithm {
      using Container = Gaudi::Examples::MyTrack::Container;
      DataObjectWriteHandle<Container> m_output{ this, "Output", this->name(), "TES location of output container" };
 
    public:
      // ======================================================================
      SelCreate( const std::string& name, ISvcLocator* pSvcLocator ) : GaudiAlgorithm( name, pSvcLocator ) {}
      // using GaudiAlgorithm::GaudiAlgorithm;
      // ======================================================================
      StatusCode execute() override {
        // some random number generators, just to provide the numbers
        static Rndm::Numbers gauss( randSvc(), Rndm::Gauss( 0.0, 1.0 ) );
        static Rndm::Numbers flat( randSvc(), Rndm::Flat( 20.0, 100.0 ) );
 
        // create the data
        auto tracks = std::make_unique<Gaudi::Examples::MyTrack::Container>();
 
        for ( int i = 0; i < 100; ++i ) {
          // create new track
          auto track = std::make_unique<Gaudi::Examples::MyTrack>();
 
          // fill it with some "data"
          track->setPx( gauss() );
          track->setPy( gauss() );
          track->setPz( gauss() + flat() );
 
          // insert it into the container
          tracks->insert( track.release() );
        }
 
        // register the container in TES
        m_output.put( std::move( tracks ) );
 
        typedef Gaudi::NamedRange_<Gaudi::Examples::MyTrack::ConstVector> Range;
        if ( !exist<Range>( name() ) ) { err() << "No Range is available at location " << name() << endmsg; }
 
        // test "get-or-create":
 
        getOrCreate<Range, Gaudi::Examples::MyTrack::Container>( name() + "_1" );
        getOrCreate<Range, Gaudi::Examples::MyTrack::Selection>( name() + "_2" );
 
        getOrCreate<Gaudi::Examples::MyTrack::Container, Gaudi::Examples::MyTrack::Container>( name() + "_3" );
        getOrCreate<Gaudi::Examples::MyTrack::Selection, Gaudi::Examples::MyTrack::Selection>( name() + "_4" );
 
        return StatusCode::SUCCESS;
      }
    };
    // ========================================================================
  } // namespace Examples
} // end of namespace Gaudi
// ============================================================================
using Gaudi::Examples::SelCreate;
DECLARE_COMPONENT( SelCreate )
// ============================================================================
// The END
// ============================================================================