RivetAnalyzer Class Reference

#include <RivetAnalyzer.h>

Inheritance diagram for RivetAnalyzer:

List of all members.

Public Member Functions
virtual void	analyze (const edm::Event &, const edm::EventSetup &)
virtual void	beginJob ()
virtual void	beginRun (const edm::Run &, const edm::EventSetup &)
virtual void	endJob ()
virtual void	endRun (const edm::Run &, const edm::EventSetup &)
	RivetAnalyzer (const edm::ParameterSet &)
virtual	~RivetAnalyzer ()
Private Attributes
Rivet::AnalysisHandler	_analysisHandler
edm::InputTag	_hepmcCollection
bool	_isFirstEvent
std::string	_outFileName

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Detailed Description

Definition at line 16 of file RivetAnalyzer.h.

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Constructor & Destructor Documentation

RivetAnalyzer::RivetAnalyzer

(

const edm::ParameterSet &

pset

)

Definition at line 22 of file RivetAnalyzer.cc.

References _analysisHandler, _hepmcCollection, and edm::ParameterSet::getParameter().

                                                        : 
_analysisHandler(),
_isFirstEvent(true),
_outFileName(pset.getParameter<std::string>("OutputFile"))
{
  //retrive the analysis name from paarmeter set
  std::vector<std::string> analysisNames = pset.getParameter<std::vector<std::string> >("AnalysisNames");
  
  _hepmcCollection = pset.getParameter<edm::InputTag>("HepMCCollection");

  //get the analyses
  _analysisHandler.addAnalyses(analysisNames);

  //go through the analyses and check those that need the cross section
  const std::set< AnaHandle, AnaHandleLess > & analyses = _analysisHandler.analyses();

  std::set< AnaHandle, AnaHandleLess >::const_iterator ibeg = analyses.begin();
  std::set< AnaHandle, AnaHandleLess >::const_iterator iend = analyses.end();
  std::set< AnaHandle, AnaHandleLess >::const_iterator iana; 
  double xsection = -1.;
  xsection = pset.getParameter<double>("CrossSection");
  for (iana = ibeg; iana != iend; ++iana){
    if ((*iana)->needsCrossSection())
      (*iana)->setCrossSection(xsection);
  }
}

RivetAnalyzer::~RivetAnalyzer

(

)

[virtual]

Definition at line 49 of file RivetAnalyzer.cc.

                             {
}

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Member Function Documentation

void RivetAnalyzer::analyze	(	const edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)		[virtual]

Implements edm::EDAnalyzer.

Definition at line 67 of file RivetAnalyzer.cc.

References _analysisHandler, _hepmcCollection, _isFirstEvent, and edm::Event::getByLabel().

                                                                             {
  
  //get the hepmc product from the event
  edm::Handle<HepMCProduct> evt;
  iEvent.getByLabel(_hepmcCollection, evt);

  // get HepMC GenEvent
  const HepMC::GenEvent *myGenEvent = evt->GetEvent();

  //aaply the beams initialization on the first event
  if (_isFirstEvent){
    _analysisHandler.init(*myGenEvent);
    _isFirstEvent = false;
  }

  //run the analysis
  _analysisHandler.analyze(*myGenEvent);
}

void RivetAnalyzer::beginJob

(

void

)

[virtual]

Reimplemented from edm::EDAnalyzer.

Definition at line 52 of file RivetAnalyzer.cc.

                            {
  //set the environment, very ugly but rivet is monolithic when it comes to paths
  char * cmsswbase    = getenv("CMSSW_BASE");
  char * cmsswrelease = getenv("CMSSW_RELEASE_BASE");
  std::string rivetref, rivetinfo;
  rivetref = "RIVET_REF_PATH=" + string(cmsswbase) + "/src/GeneratorInterface/RivetInterface/data:" + string(cmsswrelease) + "/src/GeneratorInterface/RivetInterface/data";
  rivetinfo = "RIVET_INFO_PATH=" + string(cmsswbase) + "/src/GeneratorInterface/RivetInterface/data:" + string(cmsswrelease) + "/src/GeneratorInterface/RivetInterface/data";
  putenv(strdup(rivetref.c_str()));
  putenv(strdup(rivetinfo.c_str()));
}

void RivetAnalyzer::beginRun	(	const edm::Run &	iRun,
		const edm::EventSetup &	iSetup
	)		[virtual]

Reimplemented from edm::EDAnalyzer.

Definition at line 63 of file RivetAnalyzer.cc.

                                                                          {
  return;
}

void RivetAnalyzer::endJob

(

void

)

[virtual]

Reimplemented from edm::EDAnalyzer.

Definition at line 91 of file RivetAnalyzer.cc.

References _analysisHandler, and _outFileName.

                          {
  _analysisHandler.finalize();   
  _analysisHandler.writeData(_outFileName);
}

void RivetAnalyzer::endRun	(	const edm::Run &	iRun,
		const edm::EventSetup &	iSetup
	)		[virtual]

Reimplemented from edm::EDAnalyzer.

Definition at line 87 of file RivetAnalyzer.cc.

                                                                        {
  return;
}

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Member Data Documentation

Rivet::AnalysisHandler RivetAnalyzer::_analysisHandler [private]

Definition at line 36 of file RivetAnalyzer.h.

Referenced by analyze(), endJob(), and RivetAnalyzer().

edm::InputTag RivetAnalyzer::_hepmcCollection [private]

Definition at line 35 of file RivetAnalyzer.h.

Referenced by analyze(), and RivetAnalyzer().

bool RivetAnalyzer::_isFirstEvent [private]

Definition at line 37 of file RivetAnalyzer.h.

Referenced by analyze().

std::string RivetAnalyzer::_outFileName [private]

Definition at line 38 of file RivetAnalyzer.h.

Referenced by endJob().