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//--------------------------------------------------------------------------------------------------
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// $Id: BaseFiller.h,v 1.7 2008/07/07 16:14:01 loizides Exp $
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//
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// BaseFiller
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//
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// Base class to define the interface for a filler.
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//
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// Authors: C.Paus
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//--------------------------------------------------------------------------------------------------
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#ifndef TREEFILLER_BASEFILLER_H
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#define TREEFILLER_BASEFILLER_H
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#include "FWCore/Framework/interface/Event.h"
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#include "FWCore/Framework/interface/Frameworkfwd.h"
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#include "FWCore/ParameterSet/interface/ParameterSet.h"
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#include "FWCore/MessageLogger/interface/MessageLogger.h"
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#include "DataFormats/Common/interface/Handle.h"
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#include "MitAna/DataUtil/interface/TreeWriter.h"
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namespace mithep
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{
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class BaseFiller
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{
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public:
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BaseFiller(const edm::ParameterSet &cfg, const char *name, bool active=true);
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virtual ~BaseFiller() {}
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bool Active() const { return active_; }
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virtual void BookDataBlock(TreeWriter &tws) = 0;
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virtual void FillDataBlock(const edm::Event &e, const edm::EventSetup &es) = 0;
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const std::string &Name() const { return name_; }
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virtual void ResolveLinks(const edm::Event &e, const edm::EventSetup &es) {}
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protected:
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const edm::ParameterSet &Conf() const { return config_; }
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void PrintErrorAndExit(const char *msg) const;
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template <typename TYPE>
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void GetProduct(const std::string name, edm::Handle<TYPE> &product,
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const edm::Event &event) const;
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const std::string name_; //name of this filler
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const edm::ParameterSet config_; //parameter set for this filler
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const bool active_; //=1 if active
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};
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}
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//--------------------------------------------------------------------------------------------------
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template <typename TYPE>
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inline void mithep::BaseFiller::GetProduct(const std::string edmname, edm::Handle<TYPE> &product,
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const edm::Event &event) 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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event.getByLabel(edm::InputTag(edmname),product);
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if (!product.isValid())
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throw edm::Exception(edm::errors::Configuration, "BaseFiller::GetProduct()\n")
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<< "Cannot get collection with label " << edmname << std::endl;
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} catch (...) {
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edm::LogError("BaseFiller") << "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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#endif
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