digiRootWriterAlg Class Reference

Writes Digi TDS data to a persistent ROOT file. @Based on the digiRootWriterAlg of GLAST. More...

#include <digiRootWriterAlg.h>

Inheritance diagram for digiRootWriterAlg:

Public Member Functions
	digiRootWriterAlg (const std::string &name, ISvcLocator *pSvcLocator)
StatusCode	initialize ()
	Handles setup by opening ROOT file in write mode and creating a new TTree.
StatusCode	execute ()
	Orchastrates reading from TDS and writing to ROOT for each event.
StatusCode	finalize ()
	Closes the ROOT file and cleans up.

Detailed Description

Writes Digi TDS data to a persistent ROOT file. @Based on the digiRootWriterAlg of GLAST.

Definition at line 31 of file digiRootWriterAlg.h.

Constructor & Destructor Documentation

digiRootWriterAlg()

digiRootWriterAlg::digiRootWriterAlg	(	const std::string &	name,
		ISvcLocator *	pSvcLocator )

Definition at line 83 of file digiRootWriterAlg.h.

    : Algorithm( name, pSvcLocator ) {
  // Input parameters available to be set via the jobOptions file
  declareProperty( "digiRootFile", m_fileName = "digi.root" );
  declareProperty( "splitMode", m_splitMode = 1 );
  declareProperty( "bufferSize", m_bufSize = 64000 );
  declareProperty( "compressionLevel", m_compressionLevel = 1 );
  // declareProperty("treeName", m_treeName="Digi");
  declareProperty( "treeName", m_treeName = "Rec" ); // wensp modified on 20050515 for test
  declareProperty( "autoSave", m_autoSaveEvents = 1000 );
}

Member Function Documentation

execute()

StatusCode digiRootWriterAlg::execute

(

)

Orchastrates reading from TDS and writing to ROOT for each event.

Definition at line 135 of file digiRootWriterAlg.h.

                                      {
  // Purpose and Method:  Called once per event.  This method calls
  //   the appropriate methods to read data from the TDS and write data
  //   to the ROOT file.
 
  MsgStream log( msgSvc(), name() );
 
  StatusCode sc = StatusCode::SUCCESS;
 
  if ( !m_digiFile->IsOpen() )
  {
    log << MSG::ERROR << "ROOT file " << m_fileName << " could not be opened for writing."
        << endmsg;
    return StatusCode::FAILURE;
  }
 
  m_digiEvt->Clear();
 
  sc = writeDigiEvent();
  if ( sc.isFailure() )
  {
    log << MSG::ERROR << "Failed to write DigiEvent" << endmsg;
    return sc;
  }
 
  sc = writeMdcDigi();
  if ( sc.isFailure() )
  {
    log << MSG::ERROR << "Failed to write Tkr Digi Collection" << endmsg;
    return sc;
  }
 
  writeEvent();
  return sc;
}

finalize()

StatusCode digiRootWriterAlg::finalize

(

)

Closes the ROOT file and cleans up.

Definition at line 257 of file digiRootWriterAlg.h.

                                       {
  close();
 
  StatusCode sc = StatusCode::SUCCESS;
  return sc;
}

initialize()

StatusCode digiRootWriterAlg::initialize

(

)

Handles setup by opening ROOT file in write mode and creating a new TTree.

Definition at line 95 of file digiRootWriterAlg.h.

                                         {
  // Purpose and Method:  Called once before the run begins.  This method
  //    opens a new ROOT file and prepares for writing.
 
  StatusCode sc = StatusCode::SUCCESS;
  MsgStream  log( msgSvc(), name() );
 
  // Use the Job options service to set the Algorithm's parameters
  // This will retrieve parameters set in the job options file
  setProperties();
 
  if ( service( "RootIoSvc", m_rootIoSvc, true ).isFailure() )
  {
    log << MSG::INFO << "Couldn't find the RootIoSvc!" << endmsg;
    log << MSG::INFO << "No Auto Saving" << endmsg;
    m_rootIoSvc = 0;
  }
 
  facilities::Util::expandEnvVar( &m_fileName );
 
  // Save the current directory for the ntuple writer service
  TDirectory* saveDir = gDirectory;
  // Create the new ROOT file
  m_digiFile = new TFile( m_fileName.c_str(), "RECREATE" );
  if ( !m_digiFile->IsOpen() )
  {
    log << MSG::ERROR << "ROOT file " << m_fileName << " could not be opened for writing."
        << endmsg;
    return StatusCode::FAILURE;
  }
  m_digiFile->cd();
  m_digiFile->SetCompressionLevel( m_compressionLevel );
  m_digiTree         = new TTree( m_treeName.c_str(), "Bes Digitization Data" );
  m_digiEvt          = new DigiEvent();
  m_common.m_digiEvt = m_digiEvt;
  m_digiTree->Branch( "DigiEvent", "DigiEvent", &m_digiEvt, m_bufSize, m_splitMode );
  saveDir->cd();
  return sc;
}

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The documentation for this class was generated from the following file:

• digiRootWriterAlg.h