This class provides the interface to the ROOT software. More...

#include <RootSvc.h>

Inheritance diagram for Athena::RootSvc:

Collaboration diagram for Athena::RootSvc:

Public Member Functions
	RootSvc (const std::string &name, ISvcLocator *pSvcLocator)
	Standard Service Constructor.
StatusCode	initialize ()
	Gaudi Service Interface method implementations:
StatusCode	finalize ()
StatusCode	open (const std::string &fname, const std::string &mode)
	Open the file fname with open mode mode.
StatusCode	connect (const std::string &fname)
	Connect the file fname to the service.
StatusCode	commitOutput ()
	Commit data and flush buffer.
StatusCode	disconnect (const std::string &fname)
	Disconnect the file fname from the service.
Athena::RootConnection *	connection (const std::string &fname)
	Get the RootConnection associated with file fname.
virtual	~RootSvc ()
	Destructor.

RootType	getType (const std::type_info &type) const
	Load the type (dictionary) from Root.
void *	readObject (const Token &token, void *&pObj)
	Read object from Root.
const Token *	writeObject (const Placement &placement, const RootType &type, const void *pObj)
	Write object of a given class to Root.
void *	createObject (const RootType &type) const
	Create an object of a given RootType.
void	destructObject (const RootType &type, void *pObj) const
	Destruct a given object of type RootType.

Private Types
typedef std::map< Guid, Athena::RootConnection * >	ConnMap_t

Private Member Functions
	RootSvc ()
	Default constructor:
	RootSvc (const RootSvc &)
RootSvc &	operator= (const RootSvc &)

Private Attributes
SmartIF< Gaudi::IFileCatalogMgr >	m_gCatalogMgr
SmartIF< Gaudi::IFileCatalog >	m_gCatalog
ConnMap_t	m_conns
	Map of file name keys and connection values.
Athena::RootConnection *	m_wconn
ServiceHandle< ::IDictLoaderSvc >	m_dictSvc
	ServiceHandle to the dictionary service.

Detailed Description

This class provides the interface to the ROOT software.

Definition at line 42 of file RootSvc.h.

Member Typedef Documentation

◆ ConnMap_t

typedef std::map<Guid, Athena::RootConnection*> Athena::RootSvc::ConnMap_t

private

Definition at line 98 of file RootSvc.h.

Constructor & Destructor Documentation

◆ RootSvc() [1/3]

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

Standard Service Constructor.

Definition at line 24 of file RootSvc.cxx.

                                                                :
    base_class(name, pSvcLocator),
    m_gCatalogMgr(Gaudi::svcLocator()->service<Gaudi::IFileCatalogMgr>( "Gaudi::MultiFileCatalog" )),
    m_gCatalog(m_gCatalogMgr),
    m_conns(),
    m_wconn(0),
    m_dictSvc("AthDictLoaderSvc", name) {
}

◆ ~RootSvc()

Athena::RootSvc::~RootSvc ( )

virtual

Destructor.

Definition at line 33 of file RootSvc.cxx.

                  {
  for (ConnMap_t::iterator itr = m_conns.begin(), iend = m_conns.end(); itr != iend; ++itr) {
    delete itr->second; itr->second = 0;
  }
  m_conns.clear();
}

◆ RootSvc() [2/3]

Athena::RootSvc::RootSvc ( )

private

Default constructor:

◆ RootSvc() [3/3]

Athena::RootSvc::RootSvc ( const RootSvc & )

private

Member Function Documentation

◆ commitOutput()

StatusCode Athena::RootSvc::commitOutput ( )

Commit data and flush buffer.

Definition at line 149 of file RootSvc.cxx.

                                 {
  ATH_MSG_VERBOSE("RootSvc::commitOutput");
  if (m_wconn == 0) {
    ATH_MSG_ERROR("Cannot commit without RootConnection.");
    return StatusCode::FAILURE;
  }
  if (!m_wconn->commit().isSuccess()) {
    ATH_MSG_ERROR("Cannot commit RootConnection.");
    return StatusCode::FAILURE;
  }
  return StatusCode::SUCCESS;
}

◆ connect()

StatusCode Athena::RootSvc::connect ( const std::string & fname )

Connect the file fname to the service.

Definition at line 134 of file RootSvc.cxx.

                                                  {
  ATH_MSG_VERBOSE("connect(" << fname << ")...");
  Athena::RootConnection* conn = this->connection(fname);
  if (conn == 0) {
    ATH_MSG_ERROR("No open RootConnection for file " << fname);
    return StatusCode::FAILURE;
  }
  if (!conn->connectWrite("recreate").isSuccess()) {
    ATH_MSG_ERROR("Cannot connect to file " << fname);
    return StatusCode::FAILURE;
  }
  m_wconn = conn;
  return StatusCode::SUCCESS;
}

◆ connection()

Athena::RootConnection * Athena::RootSvc::connection ( const std::string & fname )

Get the RootConnection associated with file fname.

Returns: NULL if no such file is known to this service

Definition at line 182 of file RootSvc.cxx.

                                                                {
// Catalog to get fid...
  Guid fid = Guid::null();
  std::string fidString;
  fidString = m_gCatalog->lookupPFN(fname);
  if( fidString.empty() ) {
     fidString = m_gCatalog->createFID();
     m_gCatalog->registerPFN(fidString, fname, "ROOT_All");
  }
  fid.fromString(fidString);
  Athena::RootConnection* conn = 0;
  ConnMap_t::const_iterator fitr = m_conns.find(fid);
  if (fitr != m_conns.end()) {
    conn = fitr->second;
  }
  return conn;
}

◆ createObject()

void * Athena::RootSvc::createObject ( const RootType & type ) const

Create an object of a given RootType.

Definition at line 98 of file RootSvc.cxx.

                                                      {
  void* pObj = type.Construct();
  return pObj;
}

◆ destructObject()

void Athena::RootSvc::destructObject	(	const RootType &	type,
		void *	pObj ) const

Destruct a given object of type RootType.

Definition at line 104 of file RootSvc.cxx.

104 {

105}

◆ disconnect()

StatusCode Athena::RootSvc::disconnect ( const std::string & fname )

Disconnect the file fname from the service.

Definition at line 163 of file RootSvc.cxx.

                                                     {
  ATH_MSG_VERBOSE("disconnect(" << fname << ")...");
  Athena::RootConnection* conn = this->connection(fname);
  if (conn == 0) {
    ATH_MSG_ERROR("No open RootConnection for file " << fname);
    return StatusCode::FAILURE;
  }
  if (!conn->disconnect().isSuccess()) {
    ATH_MSG_ERROR("Cannot disconnect to file " << fname);
    return StatusCode::FAILURE;
  }
  if (m_wconn == conn) {
    m_wconn = 0;
  }
  return StatusCode::SUCCESS;
}

◆ finalize()

StatusCode Athena::RootSvc::finalize ( )

Definition at line 58 of file RootSvc.cxx.

                             {
  for (ConnMap_t::const_iterator itr = m_conns.begin(), iend = m_conns.end(); itr != iend; ++itr) {
    if (!itr->second->disconnect().isSuccess()) {
      ATH_MSG_WARNING("Cannot disconnect file = " << itr->first.toString());
    }
  }
  m_gCatalog->commit();
  return ::AthService::finalize();
}

◆ getType()

RootType Athena::RootSvc::getType ( const std::type_info & type ) const

Load the type (dictionary) from Root.

RootType-base interface Load the type (dictionary) from Root.

Definition at line 69 of file RootSvc.cxx.

                                                        {
  return m_dictSvc->load_type(type);
}

◆ initialize()

StatusCode Athena::RootSvc::initialize ( )

Gaudi Service Interface method implementations:

Definition at line 40 of file RootSvc.cxx.

                               {
  ATH_MSG_INFO("Initializing " << name());
  if (!::AthService::initialize().isSuccess()) {
    ATH_MSG_FATAL("Cannot initialize ConversionSvc base class.");
    return StatusCode::FAILURE;
  }
  try {
    m_gCatalogMgr->addCatalog("xmlcatalog_file:RootFileCatalog.xml");
    m_gCatalogMgr->setWriteCatalog(m_gCatalogMgr->findCatalog("file:RootFileCatalog.xml", true));
    m_gCatalog->init();
  } catch (std::exception& e) {
    ATH_MSG_FATAL ("Set up Catalog - caught exception: " << e.what());
    return StatusCode::FAILURE;
  }
  ATH_CHECK(m_dictSvc.retrieve());
  return StatusCode::SUCCESS;
}

◆ open()

StatusCode Athena::RootSvc::open	(	const std::string &	fname,
		const std::string &	mode )

Open the file fname with open mode mode.

Definition at line 108 of file RootSvc.cxx.

                                                                   {
// Catalog to get fid...
  Guid fid = Guid::null();
  std::string fidString;
  fidString = m_gCatalog->lookupPFN(fname);
  if( fidString.empty() ) {
     fidString = m_gCatalog->createFID();
     m_gCatalog->registerPFN(fidString, fname, "ROOT_All");
  }
  fid.fromString(fidString);
  Athena::RootConnection* conn = 0;
  ConnMap_t::const_iterator fitr = m_conns.find(fid);
  if (fitr == m_conns.end()) {
     conn = new Athena::RootConnection(this, fname);
     m_conns.insert(std::make_pair(fid, conn));
  } else {
     conn = fitr->second;
  }
  if (conn == 0) {
     ATH_MSG_ERROR("Cannot get RootConnection for file " << fid.toString());
     return StatusCode::FAILURE;
  }
  return StatusCode::SUCCESS;
}

◆ operator=()

RootSvc & Athena::RootSvc::operator= ( const RootSvc & )

private

◆ readObject()

void * Athena::RootSvc::readObject	(	const Token &	token,
		void *&	pObj )

Read object from Root.

Definition at line 74 of file RootSvc.cxx.

                                                  {
  return 0;
}

◆ writeObject()

const Token * Athena::RootSvc::writeObject	(	const Placement &	placement,
		const RootType &	type,
		const void *	pObj )

Write object of a given class to Root.

Definition at line 79 of file RootSvc.cxx.

                                                                                                    {
  ATH_MSG_VERBOSE("RootSvc::writeObject pObj = " << pObj);
  if (m_wconn == 0) {
    ATH_MSG_ERROR("Cannot write without RootConnection for placement " << placement.containerName());
    return 0;
  }
  if (!m_wconn->setContainer(placement.containerName(), type.Name()).isSuccess()) {
    ATH_MSG_ERROR("Cannot set container [" << placement.containerName() << "]");
    return 0;
  }
  unsigned long ientry = 0;
  if (!m_wconn->write(pObj, ientry).isSuccess()) {
    ATH_MSG_ERROR("Cannot write Object to placement [" << placement.containerName() << "]");
    return 0;
  }
  return new Token();
}

Member Data Documentation

◆ m_conns

ConnMap_t Athena::RootSvc::m_conns

private

Map of file name keys and connection values.

Definition at line 100 of file RootSvc.h.

◆ m_dictSvc

ServiceHandle< ::IDictLoaderSvc> Athena::RootSvc::m_dictSvc

private

ServiceHandle to the dictionary service.

Definition at line 104 of file RootSvc.h.

◆ m_gCatalog

SmartIF<Gaudi::IFileCatalog> Athena::RootSvc::m_gCatalog

private

Definition at line 96 of file RootSvc.h.

◆ m_gCatalogMgr

SmartIF<Gaudi::IFileCatalogMgr> Athena::RootSvc::m_gCatalogMgr

private

Definition at line 95 of file RootSvc.h.

◆ m_wconn

Athena::RootConnection* Athena::RootSvc::m_wconn

private

Definition at line 101 of file RootSvc.h.

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

Public Member Functions

Private Types

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ ConnMap_t

Constructor & Destructor Documentation

◆ RootSvc() [1/3]

◆ ~RootSvc()

◆ RootSvc() [2/3]

◆ RootSvc() [3/3]

Member Function Documentation

◆ commitOutput()

◆ connect()

◆ connection()

◆ createObject()

◆ destructObject()

◆ disconnect()

◆ finalize()

◆ getType()

◆ initialize()

◆ open()

◆ operator=()

◆ readObject()

◆ writeObject()

Member Data Documentation

◆ m_conns

◆ m_dictSvc

◆ m_gCatalog

◆ m_gCatalogMgr

◆ m_wconn