| # Gaudi Framework, version v21r6 |

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# OutputStream.cpp

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    00001 // $Id: OutputStream.cpp,v 1.23 2008/01/15 13:46:52 marcocle Exp $
    00002 #define GAUDISVC_PERSISTENCYSVC_OUTPUTSTREAM_CPP
    00003
    00004 // Framework include files
    00005 #include "GaudiKernel/Tokenizer.h"
    00006 #include "GaudiKernel/AlgFactory.h"
    00007 #include "GaudiKernel/IRegistry.h"
    00008 #include "GaudiKernel/IAlgManager.h"
    00009 #include "GaudiKernel/ISvcLocator.h"
    00010 #include "GaudiKernel/IConversionSvc.h"
    00011 #include "GaudiKernel/IDataManagerSvc.h"
    00012 #include "GaudiKernel/IDataProviderSvc.h"
    00013 #include "GaudiKernel/IPersistencySvc.h"
    00014 #include "GaudiKernel/IOpaqueAddress.h"
    00015 #include "GaudiKernel/Incident.h"
    00016 #include "GaudiKernel/IIncidentSvc.h"
    00017
    00018 #include "GaudiKernel/MsgStream.h"
    00019 #include "GaudiKernel/strcasecmp.h"
    00020 #include "GaudiKernel/DataObject.h"
    00021 #include "GaudiKernel/DataStoreItem.h"
    00022 #include "OutputStream.h"
    00023 #include "OutputStreamAgent.h"
    00024
    00025 // Define the algorithm factory for the standard output data writer
    00026 DECLARE_ALGORITHM_FACTORY(OutputStream)
    00027
    00028 // Standard Constructor
    00029 OutputStream::OutputStream(const std::string& name, ISvcLocator* pSvcLocator)
    00030  : Algorithm(name, pSvcLocator)
    00031 {
    00032   m_doPreLoad      = true;
    00033   m_doPreLoadOpt   = false;
    00034   m_verifyItems    = true;
    00035   m_output         = "";
    00036   m_outputName     = "";
    00037   m_outputType     = "UPDATE";
    00038   m_storeName      = "EventDataSvc";
    00039   m_persName       = "EventPersistencySvc";
    00040   m_agent          = new OutputStreamAgent(this);
    00041   m_acceptAlgs     = new std::vector<Algorithm*>();
    00042   m_requireAlgs    = new std::vector<Algorithm*>();
    00043   m_vetoAlgs       = new std::vector<Algorithm*>();
    00046   m_fireIncidents  = true;
    00047   declareProperty("ItemList",         m_itemNames);
    00048   declareProperty("OptItemList",      m_optItemNames);
    00049   declareProperty("Preload",          m_doPreLoad);
    00050   declareProperty("PreloadOptItems",  m_doPreLoadOpt);
    00051   declareProperty("Output",           m_output);
    00052   declareProperty("OutputFile",       m_outputName);
    00053   declareProperty("EvtDataSvc",       m_storeName);
    00054   declareProperty("EvtConversionSvc", m_persName);
    00055   declareProperty("AcceptAlgs",       m_acceptNames);
    00056   declareProperty("RequireAlgs",      m_requireNames);
    00057   declareProperty("VetoAlgs",         m_vetoNames);
    00058   declareProperty("VerifyItems",      m_verifyItems);
    00061
    00062   // Associate action handlers with the AcceptAlgs, RequireAlgs & VetoAlgs properties
    00063   m_acceptNames.declareUpdateHandler ( &OutputStream::acceptAlgsHandler , this );
    00064   m_requireNames.declareUpdateHandler( &OutputStream::requireAlgsHandler, this );
    00065   m_vetoNames.declareUpdateHandler   ( &OutputStream::vetoAlgsHandler   , this );
    00066 }
    00067
    00068 // Standard Destructor
    00069 OutputStream::~OutputStream()   {
    00070   delete m_agent;
    00071   delete m_acceptAlgs;
    00072   delete m_requireAlgs;
    00073   delete m_vetoAlgs;
    00074 }
    00075
    00076 // initialize data writer
    00077 StatusCode OutputStream::initialize() {
    00078   MsgStream log(msgSvc(), name());
    00079
    00080   // Reset the number of events written
    00081   m_events = 0;
    00082   // Get access to the DataManagerSvc
    00083   m_pDataManager = serviceLocator()->service(m_storeName);
    00084   if( !m_pDataManager.isValid() )   {
    00085     log << MSG::FATAL << "Unable to locate IDataManagerSvc interface" << endmsg;
    00086     return StatusCode::FAILURE;
    00087   }
    00088   // Get access to the IncidentService
    00089   m_incidentSvc = serviceLocator()->service("IncidentSvc");
    00090   if( !m_incidentSvc.isValid() )  {
    00091     log << MSG::WARNING << "Error retrieving IncidentSvc." << endmsg;
    00092     return StatusCode::FAILURE;
    00093   }
    00094   // Get access to the assigned data service
    00095   m_pDataProvider = serviceLocator()->service(m_storeName);
    00096   if( !m_pDataProvider.isValid() )   {
    00097     log << MSG::FATAL << "Unable to locate IDataProviderSvc interface of " << m_storeName << endmsg;
    00098     return StatusCode::FAILURE;
    00099   }
    00100   if ( !(m_itemNames.empty() && m_optItemNames.empty()) )  {
    00101     StatusCode status = connectConversionSvc();
    00102     if( !status.isSuccess() )   {
    00103       log << MSG::FATAL << "Unable to connect to conversion service." << endmsg;
    00104       if(m_outputName!="" && m_fireIncidents) m_incidentSvc->fireIncident(Incident(m_outputName,
    00105                                            IncidentType::FailOutputFile));
    00106       return status;
    00107     }
    00108   }
    00109
    00110   // Clear the list with optional items
    00111   clearItems(m_optItemList);
    00112   // Clear the item list
    00113   clearItems(m_itemList);
    00114
    00115   ItemNames::iterator i;
    00116   // Take the new item list from the properties.
    00117   for(i = m_itemNames.begin(); i != m_itemNames.end(); i++)   {
    00118     addItem( m_itemList, *i );
    00119   }
    00120
    00121   // Take the new item list from the properties.
    00122   for(i = m_optItemNames.begin(); i != m_optItemNames.end(); i++)   {
    00123     addItem( m_optItemList, *i );
    00124   }
    00125
    00126   // Take the item list to the data service preload list.
    00127   if ( m_doPreLoad )    {
    00128     for(Items::iterator j = m_itemList.begin(); j != m_itemList.end(); j++)   {
    00129       m_pDataProvider->addPreLoadItem( *(*j) ).ignore();
    00130     }
    00131     // Not working: bad reference counting! pdataSvc->release();
    00132   }
    00133
    00134   if ( m_doPreLoadOpt )    {
    00135     for(Items::iterator j=m_optItemList.begin(); j!=m_optItemList.end(); j++) {
    00136       m_pDataProvider->addPreLoadItem( *(*j) );
    00137     }
    00138   }
    00139   log << MSG::INFO << "Data source: " << m_storeName  << " output: " << m_output << endmsg;
    00140
    00141   // Decode the accept, required and veto Algorithms. The logic is the following:
    00142   //  a. The event is accepted if all lists are empty.
    00143   //  b. The event is provisionally accepted if any Algorithm in the accept list
    00144   //     has been executed and has indicated that its filter is passed. This
    00145   //     provisional acceptance can be overridden by the other lists.
    00146   //  c. The event is rejected unless all Algorithms in the required list have
    00147   //     been executed and have indicated that their filter passed.
    00148   //  d. The event is rejected if any Algorithm in the veto list has been
    00149   //     executed and has indicated that its filter has passed.
    00150   decodeAcceptAlgs ().ignore();
    00151   decodeRequireAlgs().ignore();
    00152   decodeVetoAlgs   ().ignore();
    00153   return StatusCode::SUCCESS;
    00154 }
    00155
    00156 // terminate data writer
    00157 StatusCode OutputStream::finalize() {
    00158   MsgStream log(msgSvc(), name());
    00159   log << MSG::INFO << "Events output: " << m_events << endmsg;
    00160   if(m_fireIncidents) m_incidentSvc->fireIncident(Incident(m_outputName,
    00161                                        IncidentType::EndOutputFile));
    00162   m_incidentSvc.reset();
    00163   m_pDataProvider.reset();
    00164   m_pDataManager.reset();
    00165   m_pConversionSvc.reset();
    00166   clearItems(m_optItemList);
    00167   clearItems(m_itemList);
    00168   return StatusCode::SUCCESS;
    00169 }
    00170
    00171 // Work entry point
    00172 StatusCode OutputStream::execute() {
    00173   // Clear any previously existing item list
    00174   clearSelection();
    00175   // Test whether this event should be output
    00176   if ( isEventAccepted() )  {
    00177     StatusCode sc = writeObjects();
    00178     clearSelection();
    00179     m_events++;
    00180     if(sc.isSuccess() && m_fireIncidents)
    00181       m_incidentSvc->fireIncident(Incident(m_outputName,
    00182                                            IncidentType::WroteToOutputFile));
    00183     else if(m_fireIncidents)
    00184       m_incidentSvc->fireIncident(Incident(m_outputName,
    00185                                            IncidentType::FailOutputFile));
    00186     return sc;
    00187   }
    00188   return StatusCode::SUCCESS;
    00189 }
    00190
    00191 // Select the different objects and write them to file
    00192 StatusCode OutputStream::writeObjects()  {
    00193   // Connect the output file to the service
    00194   StatusCode status = collectObjects();
    00195   if ( status.isSuccess() )   {
    00196     IDataSelector*  sel = selectedObjects();
    00197     if ( sel->begin() != sel->end() )  {
    00198       status = m_pConversionSvc->connectOutput(m_outputName, m_outputType);
    00199       if ( status.isSuccess() )   {
    00200         // Now pass the collection to the persistency service
    00201         IDataSelector::iterator j;
    00202         IOpaqueAddress* pAddress = 0;
    00203         for ( j = sel->begin(); j != sel->end(); j++ )    {
    00204           StatusCode iret = m_pConversionSvc->createRep( *j, pAddress );
    00205           if ( !iret.isSuccess() )      {
    00206             status = iret;
    00207             continue;
    00208           }
    00209           IRegistry* pReg = (*j)->registry();
    00210           pReg->setAddress(pAddress);
    00211         }
    00212         for ( j = sel->begin(); j != sel->end(); j++ )    {
    00213           IRegistry* pReg = (*j)->registry();
    00214           StatusCode iret = m_pConversionSvc->fillRepRefs( pReg->address(), *j );
    00215           if ( !iret.isSuccess() )      {
    00216             status = iret;
    00217           }
    00218         }
    00219               // Commit the data if there was no error; otherwise possibly discard
    00220         if ( status.isSuccess() )  {
    00221           status = m_pConversionSvc->commitOutput(m_outputName, true);
    00222         }
    00223         else   {
    00224           m_pConversionSvc->commitOutput(m_outputName, false);
    00225         }
    00226       }
    00227     }
    00228   }
    00229   return status;
    00230 }
    00231
    00232 // Place holder to create configurable data store agent
    00233 bool OutputStream::collect(IRegistry* dir, int level)    {
    00234   if ( level < m_currentItem->depth() )   {
    00235     if ( dir->object() != 0 )   {
    00236       /*
    00237       std::cout << "Analysing ("
    00238                 << dir->name()
    00239                 << ") Object:"
    00240                 << ((dir->object()==0) ? "UNLOADED" : "LOADED")
    00241                 << std::endl;
    00242       */
    00243       m_objects.push_back(dir->object());
    00244       return true;
    00245     }
    00246   }
    00247   return false;
    00248 }
    00249
    00251 StatusCode OutputStream::collectObjects()   {
    00252   MsgStream log(msgSvc(), name());
    00253   StatusCode status = StatusCode::SUCCESS;
    00254   Items::iterator i;
    00255   // Traverse the tree and collect the requested objects
    00256   for ( i = m_itemList.begin(); i != m_itemList.end(); i++ )    {
    00257     DataObject* obj = 0;
    00258     m_currentItem = (*i);
    00259     StatusCode iret = m_pDataProvider->retrieveObject(m_currentItem->path(), obj);
    00260     if ( iret.isSuccess() )  {
    00261       iret = m_pDataManager->traverseSubTree(obj, m_agent);
    00262       if ( !iret.isSuccess() )  {
    00263         status = iret;
    00264       }
    00265     }
    00266     else  {
    00267       log << MSG::ERROR << "Cannot write mandatory object(s) (Not found) "
    00268           << m_currentItem->path() << endmsg;
    00269       status = iret;
    00270     }
    00271   }
    00272   // Traverse the tree and collect the requested objects (tolerate missing itmes here)
    00273   for ( i = m_optItemList.begin(); i != m_optItemList.end(); i++ )    {
    00274     DataObject* obj = 0;
    00275     m_currentItem = (*i);
    00276     StatusCode iret = m_pDataProvider->retrieveObject(m_currentItem->path(), obj);
    00277     if ( iret.isSuccess() )  {
    00278       iret = m_pDataManager->traverseSubTree(obj, m_agent);
    00279     }
    00280     if ( !iret.isSuccess() )    {
    00281       log << MSG::DEBUG << "Ignore request to write non-mandatory object(s) "
    00282           << m_currentItem->path() << endmsg;
    00283     }
    00284   }
    00285   return status;
    00286 }
    00287
    00288 // Clear collected object list
    00289 void OutputStream::clearSelection()     {
    00290   m_objects.erase(m_objects.begin(), m_objects.end());
    00291 }
    00292
    00293 // Remove all items from the output streamer list;
    00294 void OutputStream::clearItems(Items& itms)     {
    00295   for ( Items::iterator i = itms.begin(); i != itms.end(); i++ )    {
    00296     delete (*i);
    00297   }
    00298   itms.erase(itms.begin(), itms.end());
    00299 }
    00300
    00301 // Find single item identified by its path (exact match)
    00302 DataStoreItem*
    00303 OutputStream::findItem(const std::string& path)  {
    00304   for(Items::const_iterator i=m_itemList.begin(); i != m_itemList.end(); ++i)  {
    00305     if ( (*i)->path() == path )  return (*i);
    00306   }
    00307   for(Items::const_iterator j=m_optItemList.begin(); j != m_optItemList.end(); ++j)  {
    00308     if ( (*j)->path() == path )  return (*j);
    00309   }
    00310   return 0;
    00311 }
    00312
    00313 // Add item to output streamer list
    00314 void OutputStream::addItem(Items& itms, const std::string& descriptor)   {
    00315         MsgStream log(msgSvc(), name());
    00316   int level = 0;
    00317   size_t sep = descriptor.rfind("#");
    00318   std::string obj_path (descriptor,0,sep);
    00319   std::string slevel   (descriptor,sep+1,descriptor.length());
    00320   if ( slevel == "*" )  {
    00321     level = 9999999;
    00322   }
    00323   else   {
    00324     level = atoi(slevel.c_str());
    00325   }
    00326   if ( m_verifyItems )  {
    00327     size_t idx = obj_path.find("/",1);
    00328     while(idx != std::string::npos)  {
    00329       std::string sub_item = obj_path.substr(0,idx);
    00330       if ( 0 == findItem(sub_item) )   {
    00331         addItem(itms, sub_item+"#1");
    00332       }
    00333       idx = obj_path.find("/",idx+1);
    00334     }
    00335   }
    00336   DataStoreItem* item = new DataStoreItem(obj_path, level);
    00337   log << MSG::DEBUG << "Adding OutputStream item " << item->path()
    00338       << " with " << item->depth()
    00339       << " level(s)." << endmsg;
    00340   itms.push_back( item );
    00341 }
    00342
    00343 // Connect to proper conversion service
    00344 StatusCode OutputStream::connectConversionSvc()   {
    00345   StatusCode status = StatusCode(StatusCode::FAILURE, true);
    00346   MsgStream log(msgSvc(), name());
    00347   // Get output file from input
    00348   std::string dbType, svc, shr;
    00349   Tokenizer tok(true);
    00350   tok.analyse(m_output, " ", "", "", "=", "'", "'");
    00351   for(Tokenizer::Items::iterator i = tok.items().begin(); i != tok.items().end(); ++i)   {
    00352     const std::string& tag = (*i).tag();
    00353     const std::string& val = (*i).value();
    00354     switch( ::toupper(tag[0]) )    {
    00355     case 'D':
    00356       m_outputName = val;
    00357       break;
    00358     case 'T':
    00359       dbType = val;
    00360       break;
    00361     case 'S':
    00362       switch( ::toupper(tag[1]) )   {
    00363       case 'V':    svc = val;      break;
    00364       case 'H':    shr = "YES";    break;
    00365       }
    00366       break;
    00367     case 'O':   // OPT='<NEW<CREATE,WRITE,RECREATE>, UPDATE>'
    00368       switch( ::toupper(val[0]) )   {
    00369       case 'R':
    00370         if ( ::strncasecmp(val.c_str(),"RECREATE",3)==0 )
    00371           m_outputType = "RECREATE";
    00372         else if ( ::strncasecmp(val.c_str(),"READ",3)==0 )
    00373           m_outputType = "READ";
    00374         break;
    00375       case 'C':
    00376       case 'N':
    00377       case 'W':
    00378         m_outputType = "NEW";
    00379         break;
    00380       case 'U':
    00381         m_outputType = "UPDATE";
    00382         break;
    00383       default:
    00384         m_outputType = "???";
    00385         break;
    00386       }
    00387       break;
    00388     default:
    00389       break;
    00390     }
    00391   }
    00392   if ( !shr.empty() ) m_outputType += "|SHARED";
    00393   // Get access to the default Persistency service
    00394   // The default service is the same for input as for output.
    00395   // If this is not desired, then a specialized OutputStream must overwrite
    00396   // this value.
    00397   if ( dbType.length() > 0 && svc.length()==0 )   {
    00398     SmartIF<IPersistencySvc> ipers(serviceLocator()->service(m_persName));
    00399     if( !ipers.isValid() )   {
    00400       log << MSG::FATAL << "Unable to locate IPersistencySvc interface of " << m_persName << endmsg;
    00401       return StatusCode::FAILURE;
    00402     }
    00403     IConversionSvc *cnvSvc = 0;
    00404     status = ipers->getService(dbType, cnvSvc);
    00405     if( !status.isSuccess() )   {
    00406       log << MSG::FATAL << "Unable to locate IConversionSvc interface of database type " << dbType << endmsg;
    00407       return status;
    00408     }
    00409     // Increase reference count and keep service.
    00410     m_pConversionSvc = cnvSvc;
    00411   }
    00412   else if ( svc.length() > 0 )    {
    00413     // On success reference count is automatically increased.
    00414     m_pConversionSvc = serviceLocator()->service(svc);
    00415     if( !m_pConversionSvc.isValid() )   {
    00416       log << MSG::FATAL << "Unable to locate IConversionSvc interface of " << svc << endmsg;
    00417       return StatusCode::FAILURE;
    00418     }
    00419   }
    00420   else    {
    00421     log << MSG::FATAL
    00422         << "Unable to locate IConversionSvc interface (Unknown technology) " << endmsg
    00423         << "You either have to specify a technology name or a service name!" << endmsg
    00424         << "Please correct the job option \"" << name() << ".Output\" !"     << endmsg;
    00425     return StatusCode::FAILURE;
    00426   }
    00427   return StatusCode::SUCCESS;
    00428 }
    00429
    00430 StatusCode OutputStream::decodeAcceptAlgs( ) {
    00431   return decodeAlgorithms( m_acceptNames, m_acceptAlgs );
    00432 }
    00433
    00434 void OutputStream::acceptAlgsHandler( Property& /* theProp */ )  {
    00435   StatusCode sc = decodeAlgorithms( m_acceptNames, m_acceptAlgs );
    00436   if (sc.isFailure()) {
    00437     throw GaudiException("Failure in OutputStream::decodeAlgorithms",
    00438                          "OutputStream::acceptAlgsHandler",sc);
    00439   }
    00440 }
    00441
    00442 StatusCode OutputStream::decodeRequireAlgs( )  {
    00443   return decodeAlgorithms( m_requireNames, m_requireAlgs );
    00444 }
    00445
    00446 void OutputStream::requireAlgsHandler( Property& /* theProp */ )  {
    00447   StatusCode sc = decodeAlgorithms( m_requireNames, m_requireAlgs );
    00448   if (sc.isFailure()) {
    00449     throw GaudiException("Failure in OutputStream::decodeAlgorithms",
    00450                          "OutputStream::requireAlgsHandler",sc);
    00451   }
    00452 }
    00453
    00454 StatusCode OutputStream::decodeVetoAlgs( )  {
    00455   return decodeAlgorithms( m_vetoNames, m_vetoAlgs );
    00456 }
    00457
    00458 void OutputStream::vetoAlgsHandler( Property& /* theProp */ )  {
    00459   StatusCode sc = decodeAlgorithms( m_vetoNames, m_vetoAlgs );
    00460   if (sc.isFailure()) {
    00461     throw GaudiException("Failure in OutputStream::decodeAlgorithms",
    00462                          "OutputStream::vetoAlgsHandler",sc);
    00463   }
    00464 }
    00465
    00466 StatusCode OutputStream::decodeAlgorithms( StringArrayProperty& theNames,
    00467                                            std::vector<Algorithm*>* theAlgs )
    00468 {
    00469   // Reset the list of Algorithms
    00470   theAlgs->clear( );
    00471
    00472   MsgStream log( msgSvc( ), name( ) );
    00473
    00474   StatusCode result = StatusCode::FAILURE;
    00475
    00476   SmartIF<IAlgManager> theAlgMgr(serviceLocator());
    00477   if ( theAlgMgr.isValid() ) {
    00478     // Build the list of Algorithms from the names list
    00479     const std::vector<std::string> nameList = theNames.value( );
    00480     std::vector<std::string>::const_iterator it;
    00481     std::vector<std::string>::const_iterator itend = nameList.end( );
    00482     for (it = nameList.begin(); it != itend; ++it) {
    00483       // Check whether the supplied name corresponds to an existing
    00484       // Algorithm object.
    00485       const std::string &theName = (*it);
    00486       SmartIF<IAlgorithm> &theIAlg = theAlgMgr->algorithm(theName);
    00487       Algorithm*  theAlgorithm;
    00488       if ( theIAlg.isValid() ) {
    00489         result = StatusCode::SUCCESS;
    00490         try{
    00491           theAlgorithm = dynamic_cast<Algorithm*>(theIAlg.get());
    00492         } catch(...){
    00493           result = StatusCode::FAILURE;
    00494         }
    00495       }
    00496       if ( result.isSuccess( ) ) {
    00497         // Check that the specified algorithm doesn't already exist in the list
    00498         std::vector<Algorithm*>::iterator ita;
    00499         std::vector<Algorithm*>::iterator itaend = theAlgs->end( );
    00500         for (ita = theAlgs->begin(); ita != itaend; ++ita) {
    00501           Algorithm* existAlgorithm = (*ita);
    00502           if ( theAlgorithm == existAlgorithm ) {
    00503             result = StatusCode::FAILURE;
    00504             break;
    00505           }
    00506         }
    00507         if ( result.isSuccess( ) ) {
    00508           theAlgorithm->addRef();
    00509           theAlgs->push_back( theAlgorithm );
    00510         }
    00511       }
    00512       else {
    00513         log << MSG::INFO << theName << " doesn't exist - ignored" << endmsg;
    00514       }
    00515     }
    00516     result = StatusCode::SUCCESS;
    00517   }
    00518   else {
    00519     log << MSG::FATAL << "Can't locate ApplicationMgr!!!" << endmsg;
    00520   }
    00521   return result;
    00522 }
    00523
    00524 bool OutputStream::isEventAccepted( ) const  {
    00525   typedef std::vector<Algorithm*>::iterator AlgIter;
    00526   bool result = true;
    00527
    00528   // Loop over all Algorithms in the accept list to see
    00529   // whether any have been executed and have their filter
    00530   // passed flag set. Any match causes the event to be
    00531   // provisionally accepted.
    00532   if ( ! m_acceptAlgs->empty() ) {
    00533     result = false;
    00534     for(AlgIter i=m_acceptAlgs->begin(),end=m_acceptAlgs->end(); i != end; ++i) {
    00535       if ( (*i)->isExecuted() && (*i)->filterPassed() ) {
    00536         result = true;
    00537         break;
    00538       }
    00539     }
    00540   }
    00541
    00542   // Loop over all Algorithms in the required list to see
    00543   // whether all have been executed and have their filter
    00544   // passed flag set. Any mismatch causes the event to be
    00545   // rejected.
    00546   if ( result && ! m_requireAlgs->empty() ) {
    00547     for(AlgIter i=m_requireAlgs->begin(),end=m_requireAlgs->end(); i != end; ++i) {
    00548       if ( !(*i)->isExecuted() || !(*i)->filterPassed() ) {
    00549         result = false;
    00550         break;
    00551       }
    00552     }
    00553   }
    00554
    00555   // Loop over all Algorithms in the veto list to see
    00556   // whether any have been executed and have their filter
    00557   // passed flag set. Any match causes the event to be
    00558   // rejected.
    00559   if ( result && ! m_vetoAlgs->empty() ) {
    00560     for(AlgIter i=m_vetoAlgs->begin(),end=m_vetoAlgs->end(); i != end; ++i) {
    00561       if ( (*i)->isExecuted() && (*i)->filterPassed() ) {
    00562         result = false;
    00563         break;
    00564       }
    00565     }
    00566   }
    00567   return result;
    00568 }