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//--------------------------------------------------------------------------------------------------
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// $Id: BaseCandProducer.h,v 1.1 2008/09/27 05:48:25 loizides Exp $
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//
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// BaseCandProducer
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//
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// Base class for all more specific candidate producers.
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//
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// Authors: C.Paus
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//--------------------------------------------------------------------------------------------------
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#ifndef MITEDM_PRODUCERS_BASECANDPRODUCER_H
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#define MITEDM_PRODUCERS_BASECANDPRODUCER_H
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#include <vector>
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#include <iostream>
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#include <TString.h>
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#include "FWCore/Framework/interface/Frameworkfwd.h"
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#include "FWCore/Framework/interface/EDProducer.h"
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#include "FWCore/Framework/interface/Event.h"
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#include "FWCore/Framework/interface/MakerMacros.h"
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#include "FWCore/ParameterSet/interface/ParameterSet.h"
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namespace mitedm
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{
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class BaseCandProducer : public edm::EDProducer
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{
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public:
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explicit BaseCandProducer(const edm::ParameterSet&);
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~BaseCandProducer() {}
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protected:
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void beginJob(const edm::EventSetup&) {}
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void produce(edm::Event&, const edm::EventSetup&) = 0;
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void endJob() {}
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// generic accessors to make the code more simple
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void PrintErrorAndExit(const char *msg) const;
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template <typename TYPE>
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bool GetProduct(const std::string name, edm::Handle<TYPE> &product,
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const edm::Event &event, bool ignore = true) const;
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// Parameters always being used
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int oPid_; // pid of candidate particle
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};
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//------------------------------------------------------------------------------------------------
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template <typename TYPE>
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inline bool BaseCandProducer::GetProduct(const std::string edmName, edm::Handle<TYPE> &product,
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const edm::Event &evt, bool ignore) const
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{
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// Try to access data collection from EDM file. We check if we really get just one
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// product with the given name. If not we print an error and exit.
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try {
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evt.getByLabel(edm::InputTag(edmName),product);
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if (! product.isValid())
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throw edm::Exception(edm::errors::Configuration, "BaseCandProducer::GetProduct()\n")
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<< "Cannot get collection with label " << edmName << std::endl;
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} catch (...) {
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if (ignore)
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return false;
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else {
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edm::LogError("BaseCandProducer") << "Cannot get collection with label "
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<< edmName << std::endl;
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PrintErrorAndExit(Form("Cannot get collection with label %s", edmName.c_str()));
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}
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}
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return true;
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}
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}
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#endif
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