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//
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// $Id: PATUserDataHelper.h,v 1.4 2008/10/07 17:44:16 gpetrucc Exp $
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//
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#ifndef PhysicsTools_PatAlgos_PATUserDataHelper_h
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#define PhysicsTools_PatAlgos_PATUserDataHelper_h
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/**
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\class pat::PATUserDataHelper PATUserDataHelper.h "PhysicsTools/PatAlgos/interface/PATUserDataHelper.h"
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\brief Assists in assimilating all pat::UserData into pat objects.
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This will pull the following from the event stream (if they exist) and put them into the
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object in question, all indexed by the reco objects that make up the pat objects in question:
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* ValueMap<double>
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* ValueMap<int>
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* ValueMap<UserData>
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This is accomplished by using PATUserDataMergers.
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This also can add "in situ" string-parser-based methods directly.
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\author Salvatore Rappoccio
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\version $Id: PATUserDataHelper.h,v 1.4 2008/10/07 17:44:16 gpetrucc Exp $
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*/
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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/ParameterSet/interface/ParameterSet.h"
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#include "FWCore/ParameterSet/interface/InputTag.h"
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#include "DataFormats/Common/interface/View.h"
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#include "DataFormats/Common/interface/Ptr.h"
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#include "DataFormats/Common/interface/Association.h"
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#include "DataFormats/PatCandidates/interface/PATObject.h"
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#include "DataFormats/PatCandidates/interface/UserData.h"
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#include "DataFormats/Candidate/interface/Candidate.h"
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#include "PhysicsTools/PatAlgos/interface/PATUserDataMerger.h"
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#include "PhysicsTools/Utilities/interface/StringObjectFunction.h"
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#include <iostream>
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namespace pat {
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template<class ObjectType>
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class PATUserDataHelper {
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public:
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typedef StringObjectFunction<ObjectType> function_type;
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PATUserDataHelper() {}
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PATUserDataHelper(const edm::ParameterSet & iConfig);
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~PATUserDataHelper() {}
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// Adds information from user data to patObject,
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// using recoObject as the key
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void add(ObjectType & patObject,
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edm::Event const & iEvent, edm::EventSetup const & iSetup);
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private:
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// Custom user data
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pat::PATUserDataMerger<ObjectType, pat::helper::AddUserPtr> userDataMerger_;
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// User doubles
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pat::PATUserDataMerger<ObjectType, pat::helper::AddUserFloat> userFloatMerger_;
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// User ints
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pat::PATUserDataMerger<ObjectType, pat::helper::AddUserInt> userIntMerger_;
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// Inline functions that operate on ObjectType
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std::vector<std::string> functionNames_;
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std::vector<std::string> functionLabels_;
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std::vector<function_type > functions_;
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};
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// Constructor: Initilize user data src
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template<class ObjectType>
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PATUserDataHelper<ObjectType>::PATUserDataHelper(const edm::ParameterSet & iConfig) :
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userDataMerger_ (iConfig.getParameter<edm::ParameterSet>("userClasses")),
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userFloatMerger_ (iConfig.getParameter<edm::ParameterSet>("userFloats")),
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userIntMerger_ (iConfig.getParameter<edm::ParameterSet>("userInts")),
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functionNames_ (iConfig.getParameter<std::vector<std::string> >("userFunctions")),
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functionLabels_ (iConfig.getParameter<std::vector<std::string> >("userFunctionLabels"))
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{
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// Make sure the sizes match
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if ( functionNames_.size() != functionLabels_.size() ) {
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throw cms::Exception("Size mismatch") << "userFunctions and userFunctionLabels do not have the same size, they must be the same\n";
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}
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// Loop over the function names, create a new string-parser function object
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// with all of them. This operates on ObjectType
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std::vector<std::string>::const_iterator funcBegin = functionNames_.begin(),
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funcEnd = functionNames_.end(),
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funcIt = funcBegin;
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for ( ; funcIt != funcEnd; ++funcIt) {
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functions_.push_back( StringObjectFunction<ObjectType>( *funcIt ) );
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}
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}
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/* ==================================================================================
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PATUserDataHelper::add
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This expects four inputs:
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patObject: PATObject<ObjectType> to add to
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recoObject: The base for the value maps
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iEvent: Passed to the various data mergers
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iSetup: " "
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==================================================================================
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*/
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template<class ObjectType>
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void PATUserDataHelper<ObjectType>::add(ObjectType & patObject,
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edm::Event const & iEvent,
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const edm::EventSetup & iSetup )
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{
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// Add "complex" user data to the PAT object
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userDataMerger_.add( patObject, iEvent, iSetup );
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userFloatMerger_.add( patObject, iEvent, iSetup );
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userIntMerger_.add( patObject, iEvent, iSetup );
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// Add "inline" user-selected functions to the PAT object
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typename std::vector<function_type>::const_iterator funcBegin = functions_.begin(),
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funcEnd = functions_.end(),
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funcIt = funcBegin;
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if ( functionLabels_.size() == functions_.size() ) {
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for ( ; funcIt != funcEnd; ++funcIt) {
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double d = (*funcIt)( patObject );
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patObject.addUserFloat( functionLabels_[funcIt - funcBegin], d );
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}
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}
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}
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}
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#endif
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