CaloGeometryEP.h

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#ifndef GEOMETRY_CALOGEOMETRY_CALOGEOMETRYEP_H
#define GEOMETRY_CALOGEOMETRY_CALOGEOMETRYEP_H 1

// system include files
#include <memory>

// user include files
#include "FWCore/Framework/interface/ModuleFactory.h"
#include "FWCore/Framework/interface/ESProducer.h"

#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/ESTransientHandle.h"
#include "Geometry/Records/interface/IdealGeometryRecord.h"
#include "CondFormats/AlignmentRecord/interface/GlobalPositionRcd.h"
#include "Geometry/CaloGeometry/interface/CaloSubdetectorGeometry.h"
#include "Geometry/CaloEventSetup/interface/CaloGeometryLoader.h"
#include "DetectorDescription/Core/interface/DDCompactView.h"

#include "CondFormats/Alignment/interface/Alignments.h"

//Forward declaration

//
// class declaration
//

template <class T>
class CaloGeometryEP : public edm::ESProducer 
{
   public:

      typedef CaloGeometryLoader<T>          LoaderType ;
      typedef typename LoaderType::PtrType   PtrType    ;

      CaloGeometryEP<T>( const edm::ParameterSet& ps ) :
     m_applyAlignment ( ps.getParameter<bool>("applyAlignment") )
      {
     setWhatProduced( this,
              &CaloGeometryEP<T>::produceAligned,
//            dependsOn( &CaloGeometryEP<T>::idealRecordCallBack ),
              edm::es::Label( T::producerTag() ) ) ;
      }

      ~CaloGeometryEP<T>() override {}
      PtrType produceAligned( const typename T::AlignedRecord& iRecord ) 
      {
     const Alignments* alignPtr  ( nullptr ) ;
     const Alignments* globalPtr ( nullptr ) ;
     if( m_applyAlignment ) // get ptr if necessary
     {
        edm::ESHandle< Alignments >                                      alignments ;
        iRecord.template getRecord< typename T::AlignmentRecord >().get( alignments ) ;

        assert( alignments.isValid() && // require valid alignments and expected size
            ( alignments->m_align.size() == T::numberOfAlignments() ) ) ;
        alignPtr = alignments.product() ;

        edm::ESHandle< Alignments >                          globals   ;
        iRecord.template getRecord<GlobalPositionRcd>().get( globals ) ;

        assert( globals.isValid() ) ;
        globalPtr = globals.product() ;
     }
     edm::ESTransientHandle<DDCompactView> cpv ;
     iRecord.template getRecord<IdealGeometryRecord>().get( cpv ) ;

     LoaderType loader ;
     PtrType ptr ( loader.load( &(*cpv), alignPtr, globalPtr ) ) ; // no temporaries for shared+ptr!! 

     return ptr ; 
      }

   private:


      bool        m_applyAlignment ;
};

#endif