Go to the documentation of this file.00001 #ifndef UtilAlgos_Merger_h
00002 #define UtilAlgos_Merger_h
00003
00020 #include "FWCore/Framework/interface/EDProducer.h"
00021 #include "FWCore/Framework/interface/Event.h"
00022 #include "FWCore/ParameterSet/interface/ParameterSet.h"
00023 #include "FWCore/Utilities/interface/InputTag.h"
00024 #include "DataFormats/Common/interface/CloneTrait.h"
00025 #include <vector>
00026
00027 template<typename InputCollection,
00028 typename OutputCollection = InputCollection,
00029 typename P = typename edm::clonehelper::CloneTrait<InputCollection>::type>
00030 class Merger : public edm::EDProducer {
00031 public:
00033 explicit Merger( const edm::ParameterSet& );
00035 ~Merger();
00036
00037 private:
00039 virtual void produce( edm::Event&, const edm::EventSetup& );
00041 typedef std::vector<edm::InputTag> vtag;
00043 vtag src_;
00044 };
00045
00046 template<typename InputCollection, typename OutputCollection, typename P>
00047 Merger<InputCollection, OutputCollection, P>::Merger( const edm::ParameterSet& par ) :
00048 src_( par.template getParameter<vtag>( "src" ) ) {
00049 produces<OutputCollection>();
00050 }
00051
00052 template<typename InputCollection, typename OutputCollection, typename P>
00053 Merger<InputCollection, OutputCollection, P>::~Merger() {
00054 }
00055
00056 template<typename InputCollection, typename OutputCollection, typename P>
00057 void Merger<InputCollection, OutputCollection, P>::produce( edm::Event& evt, const edm::EventSetup& ) {
00058 std::auto_ptr<OutputCollection> coll( new OutputCollection );
00059 for( vtag::const_iterator s = src_.begin(); s != src_.end(); ++ s ) {
00060 edm::Handle<InputCollection> h;
00061 evt.getByLabel( * s, h );
00062 for( typename InputCollection::const_iterator c = h->begin(); c != h->end(); ++c ) {
00063 coll->push_back( P::clone( * c ) );
00064 }
00065 }
00066 evt.put( coll );
00067 }
00068
00069 #endif
1.7.3