Gaudi Framework, version v20r2
	Generated: 18 Jul 2008

RootHistCnv::PersSvc Class Reference

#include <PersSvc.h>

Inheritance diagram for RootHistCnv::PersSvc:

[legend]Collaboration diagram for RootHistCnv::PersSvc:

[legend]List of all members.

---

Detailed Description

Persistency service - to store histograms in ROOT format.

Author:

Charles Leggett

Definition at line 21 of file PersSvc.h.

Public Member Functions
virtual StatusCode	initialize ()
	Initialise the service.
virtual StatusCode	finalize ()
	Finalise the service.
virtual StatusCode	createRep (DataObject *pObject, IOpaqueAddress *&refpAddress)
	Convert a collection of transient data objects into another representation.
	PersSvc (const std::string &name, ISvcLocator *svc)
	Standard constructor.
virtual	~PersSvc ()
	Standard destructor.
Private Attributes
std::string	m_defFileName
	Default file name.
TFile *	m_hfile
	Pointer to the ROOT file.
bool	m_prtWar
	Already printed a Warning.
bool	m_alphaIds
	Force alphabetic histograms/ntuple IDs.
Friends
class	SvcFactory< PersSvc >

---

Constructor & Destructor Documentation

RootHistCnv::PersSvc::PersSvc	(	const std::string &	name,
		ISvcLocator *	svc
	)

Standard constructor.

Definition at line 125 of file PersSvc.cpp.

References Service::declareProperty(), m_alphaIds, m_defFileName, and RootHistCnv::undefFileName.

: ConversionSvc(name, svc, ROOT_StorageType), m_prtWar(false) {
  declareProperty("OutputFile", m_defFileName = undefFileName);
  declareProperty("ForceAlphaIds", m_alphaIds = false);
}

RootHistCnv::PersSvc::~PersSvc

(

)

[virtual]

Standard destructor.

Definition at line 133 of file PersSvc.cpp.

References m_hfile.

{
  if ( m_hfile != 0 ) {
    delete m_hfile;
    m_hfile = 0;
  }
}

---

Member Function Documentation

StatusCode RootHistCnv::PersSvc::initialize

(

)

[virtual]

Initialise the service.

Reimplemented from ConversionSvc.

Definition at line 33 of file PersSvc.cpp.

References std::basic_string< _CharT, _Traits, _Alloc >::c_str(), endreq(), MSG::ERROR, StatusCode::FAILURE, MSG::INFO, ConversionSvc::initialize(), StatusCode::isFailure(), m_defFileName, m_hfile, Service::messageService(), Service::name(), Service::setProperties(), StatusCode::SUCCESS, and RootHistCnv::undefFileName.

{
  MsgStream log( messageService(), name() );

  StatusCode status = ConversionSvc::initialize();
  if( status.isFailure() ) return status;

  // Get my properties from the JobOptionsSvc
  if (setProperties().isFailure()) {
    log << MSG::ERROR << "Could not set my properties" << endreq;
    return StatusCode::FAILURE;
  }
  // Initialize ROOT if output file name is defined
  if( undefFileName != m_defFileName ) {
    m_hfile = TFile::Open(m_defFileName.c_str(),"RECREATE","GAUDI Histograms");
  } else {
    m_hfile = 0;
  }
  log << MSG::INFO << "Writing ROOT histograms to: " << m_defFileName 
      << endreq;

  return StatusCode(StatusCode::SUCCESS,true);
}

StatusCode RootHistCnv::PersSvc::finalize

(

)

[virtual]

Finalise the service.

Reimplemented from ConversionSvc.

Definition at line 60 of file PersSvc.cpp.

References MSG::DEBUG, endreq(), ConversionSvc::finalize(), m_defFileName, m_hfile, Service::messageService(), Service::name(), and RootHistCnv::undefFileName.

{
  // Close ROOT only if the output file name is defined
  MsgStream log( messageService(), name() );
  log << MSG::DEBUG << "RootHistCnv::PersSvc::finalize()" << endreq;
  if( undefFileName != m_defFileName ) {
    m_hfile->Write("",TObject::kOverwrite);
    m_hfile->Close();
  }
  return ConversionSvc::finalize();
}

StatusCode RootHistCnv::PersSvc::createRep	(	DataObject *	pObject,
		IOpaqueAddress *&	refpAddress
	)			[virtual]

Convert a collection of transient data objects into another representation.

Reimplemented from ConversionSvc.

Definition at line 74 of file PersSvc.cpp.

References CLID_DataObject, ConversionSvc::createRep(), ConversionSvc::dataProvider(), endreq(), MSG::ERROR, StatusCode::FAILURE, IRegistry::identifier(), StatusCode::isFailure(), m_defFileName, m_hfile, m_prtWar, Service::messageService(), Service::name(), SmartDataStorePtr< TYPE, SmartDataObjectPtr::ObjectLoader >::ptr(), ConversionSvc::repSvcType(), RootHistCnv::stat_dir, StatusCode::SUCCESS, RootHistCnv::undefFileName, and MSG::WARNING.

{
  // There are objects in the HDS to be stored
  if( undefFileName != m_defFileName )  {
    SmartDataPtr<DataObject> top(dataProvider(), stat_dir);
    if ( 0 != top )    {
      IRegistry* pReg = top->registry();
      if ( pReg )   {
        if ( top.ptr() == pObject )   {
          TDirectory* pDir = m_hfile;
          refpAddress = new RootObjAddress( repSvcType(), 
                                            CLID_DataObject,
                                            stat_dir, 
                                            m_defFileName,
                                            long(pDir),
                                            long(0));
          return StatusCode::SUCCESS;
        }
        else    {
          StatusCode sc = ConversionSvc::createRep(pObject, refpAddress);
          if( sc.isFailure() )   {
            MsgStream log( messageService(), name() );
            log << MSG::ERROR
                << "Error while creating persistent Histogram:"
                << pReg->identifier()
                << endreq;
          }
          return sc;
        }
      }
    }
    MsgStream err( messageService(), name() );
    err << MSG::ERROR
        << "Internal error while creating Histogram persistent representations" 
        << endreq;
    return StatusCode::FAILURE;
  } else {
    if (!m_prtWar) {
      m_prtWar = true;
      MsgStream log( messageService(), name() );
      log << MSG::WARNING
          << "no ROOT output file name, "
          << "Histograms cannot be persistified" << endreq;
    }
  }
  return StatusCode::SUCCESS;
}

---

Friends And Related Function Documentation

friend class SvcFactory< PersSvc > [friend]

Definition at line 23 of file PersSvc.h.

---

Member Data Documentation

std::string RootHistCnv::PersSvc::m_defFileName [private]

Default file name.

Definition at line 42 of file PersSvc.h.

Referenced by createRep(), finalize(), initialize(), and PersSvc().

TFile* RootHistCnv::PersSvc::m_hfile [private]

Pointer to the ROOT file.

Definition at line 43 of file PersSvc.h.

Referenced by createRep(), finalize(), initialize(), and ~PersSvc().

bool RootHistCnv::PersSvc::m_prtWar [private]

Already printed a Warning.

Definition at line 44 of file PersSvc.h.

Referenced by createRep().

bool RootHistCnv::PersSvc::m_alphaIds [private]

Force alphabetic histograms/ntuple IDs.

Definition at line 45 of file PersSvc.h.

Referenced by PersSvc().

---

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

• /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v20r2/RootHistCnv/v9r16/src/PersSvc.h
• /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v20r2/RootHistCnv/v9r16/src/PersSvc.cpp

---