egammaRecBuilder Class Reference

Produces egammaRec objects starting from clusters. More...

#include <egammaRecBuilder.h>

Inheritance diagram for egammaRecBuilder:

Collaboration diagram for egammaRecBuilder:

Public Member Functions
	egammaRecBuilder (const std::string &name, ISvcLocator *pSvcLocator)
virtual StatusCode	initialize () override final
virtual StatusCode	execute (const EventContext &ctx) const override final
virtual StatusCode	sysInitialize () override
	Override sysInitialize.
virtual bool	isClonable () const override
	Specify if the algorithm is clonable.
virtual unsigned int	cardinality () const override
	Cardinality (Maximum number of clones that can exist) special value 0 means that algorithm is reentrant.
virtual StatusCode	sysExecute (const EventContext &ctx) override
	Execute an algorithm.
virtual const DataObjIDColl &	extraOutputDeps () const override
	Return the list of extra output dependencies.
virtual bool	filterPassed (const EventContext &ctx) const
virtual void	setFilterPassed (bool state, const EventContext &ctx) const
ServiceHandle< StoreGateSvc > &	evtStore ()
	The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.
const ServiceHandle< StoreGateSvc > &	detStore () const
	The standard StoreGateSvc/DetectorStore Returns (kind of) a pointer to the StoreGateSvc.
virtual StatusCode	sysStart () override
	Handle START transition.
virtual std::vector< Gaudi::DataHandle * >	inputHandles () const override
	Return this algorithm's input handles.
virtual std::vector< Gaudi::DataHandle * >	outputHandles () const override
	Return this algorithm's output handles.
Gaudi::Details::PropertyBase &	declareProperty (Gaudi::Property< T, V, H > &t)
void	updateVHKA (Gaudi::Details::PropertyBase &)
MsgStream &	msg () const
bool	msgLvl (const MSG::Level lvl) const

Protected Member Functions
void	renounceArray (SG::VarHandleKeyArray &handlesArray)
	remove all handles from I/O resolution
std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void >	renounce (T &h)
void	extraDeps_update_handler (Gaudi::Details::PropertyBase &ExtraDeps)
	Add StoreName to extra input/output deps as needed.

Private Types
typedef ServiceHandle< StoreGateSvc >	StoreGateSvc_t

Private Member Functions
template<typename T>
StatusCode	RetrieveTool (ToolHandle< T > &tool, bool tool_requested)
	Wrap tool retrieval, ensuring it was named and requested.
Gaudi::Details::PropertyBase &	declareGaudiProperty (Gaudi::Property< T, V, H > &hndl, const SG::VarHandleKeyType &)
	specialization for handling Gaudi::Property<SG::VarHandleKey>

Private Attributes
SG::ReadHandleKey< xAOD::CaloClusterContainer >	m_inputClusterContainerKey
	Key for the topo cluster input collection.
SG::WriteHandleKey< EgammaRecContainer >	m_egammaRecContainerKey
	Key for egammaRec container.
SG::WriteHandleKey< ConstDataVector< EgammaRecContainer > >	m_trackMatchedEgammaRecs
ToolHandle< IEMTrackMatchBuilder >	m_trackMatchBuilder
	Tool to perform track matching.
ToolHandle< IEMConversionBuilder >	m_conversionBuilder
	Tool to perfrom conversion vertex matching.
Gaudi::Property< bool >	m_doTrackMatching
	private member flag to do the track matching
Gaudi::Property< bool >	m_doConversions
	private member flag to do the conversion matching
Gaudi::Property< bool >	m_doTrackMatchedView
	private member flag to produce of view of track matched egammaRecs
DataObjIDColl	m_extendedExtraObjects
	Extra output dependency collection, extended by AthAlgorithmDHUpdate to add symlinks.
StoreGateSvc_t	m_evtStore
	Pointer to StoreGate (event store by default)
StoreGateSvc_t	m_detStore
	Pointer to StoreGate (detector store by default)
std::vector< SG::VarHandleKeyArray * >	m_vhka
bool	m_varHandleArraysDeclared

Detailed Description

Produces egammaRec objects starting from clusters.

The algorithm produces an egammaRec for each input cluster where the matched tracks and vertices are linked. These two matchings are done depending on the flags doTrackMatching and doConversions, by default true. Additionally, if doTrackMatchedView is true a view container of the egammaRecs with matched tracks is created.

Input container:

• InputClusterContainerName (default=egammaTopoCluster): topo cluster to be used to build the egammaRec Output container:
• egammaRecContainer (default=egammaRecCollection)
• trackMatchedView (default = trackMatchedEgammaRecs)

Note that the vertex and track container are specified in the tools used by this algorithm:

• TrackMatchBuilderTool (default=EMTrackMatchBuilder)
• ConversionBuilderTool (default=EMConversionBuilder)

Definition at line 42 of file egammaRecBuilder.h.

Member Typedef Documentation

StoreGateSvc_t

typedef ServiceHandle<StoreGateSvc> AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::StoreGateSvc_t

privateinherited

Definition at line 388 of file AthCommonDataStore.h.

Constructor & Destructor Documentation

egammaRecBuilder()

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

Definition at line 22 of file egammaRecBuilder.cxx.

  : AthReentrantAlgorithm(name, pSvcLocator)
{}

Member Function Documentation

cardinality()

unsigned int AthCommonReentrantAlgorithm< Gaudi::Algorithm >::cardinality ( ) const

overridevirtualinherited

Cardinality (Maximum number of clones that can exist) special value 0 means that algorithm is reentrant.

Override this to return 0 for reentrant algorithms.

Definition at line 75 of file AthCommonReentrantAlgorithm.cxx.

{
  return 0;
}

declareGaudiProperty()

Gaudi::Details::PropertyBase & AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::declareGaudiProperty ( Gaudi::Property< T, V, H > & hndl, const SG::VarHandleKeyType &  )

inlineprivateinherited

specialization for handling Gaudi::Property<SG::VarHandleKey>

Definition at line 156 of file AthCommonDataStore.h.

  {
    return *AthCommonDataStore<PBASE>::declareProperty(hndl.name(),
                                                       hndl.value(), 
                                                       hndl.documentation());
 
  }

declareProperty()

Gaudi::Details::PropertyBase & AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::declareProperty ( Gaudi::Property< T, V, H > & t )

inlineinherited

Definition at line 145 of file AthCommonDataStore.h.

                                                                     {
    typedef typename SG::HandleClassifier<T>::type htype;
    return AthCommonDataStore<PBASE>::declareGaudiProperty(t, htype());
  }

detStore()

const ServiceHandle< StoreGateSvc > & AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::detStore ( ) const

inlineinherited

The standard StoreGateSvc/DetectorStore Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 95 of file AthCommonDataStore.h.

{ return m_detStore; }

evtStore()

ServiceHandle< StoreGateSvc > & AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::evtStore ( )

inlineinherited

The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 85 of file AthCommonDataStore.h.

{ return m_evtStore; }

execute()

StatusCode egammaRecBuilder::execute ( const EventContext & ctx ) const

finaloverridevirtual

Definition at line 58 of file egammaRecBuilder.cxx.

{
  ATH_MSG_DEBUG("Executing egammaRecBuilder");
 
  SG::ReadHandle<xAOD::CaloClusterContainer> clusters(
    m_inputClusterContainerKey, ctx);
 
  // validity check is only really needed for serial running. Remove when MT is
  // only way.
  ATH_CHECK(clusters.isValid());
 
  SG::WriteHandle<EgammaRecContainer> egammaRecs(m_egammaRecContainerKey, ctx);
  ATH_CHECK(egammaRecs.record(std::make_unique<EgammaRecContainer>()));
 
  // one egamma Rec objects per cluster
  const size_t nClusters = clusters->size();
  egammaRecs->reserve(nClusters);
  for (size_t i = 0; i < nClusters; ++i) {
    const ElementLink<xAOD::CaloClusterContainer> clusterLink(
      *clusters, i, ctx);
    const std::vector<ElementLink<xAOD::CaloClusterContainer>>
      clusterLinkVector{ clusterLink };
    egammaRecs->push_back(std::make_unique<egammaRec>(clusterLinkVector));
  }
 
  // Append track Matching information if requested
  if (m_doTrackMatching) {
    ATH_CHECK(m_trackMatchBuilder->executeRec(ctx, egammaRecs.ptr()));
  }
 
  // Append conversion matching information if requested
  if (m_doConversions) {
    for (auto egRec : *egammaRecs) {
      ATH_CHECK(m_conversionBuilder->executeRec(ctx, egRec));
    }
  }
 
  // create a view of the track matched egRecs if requested
  if (m_doTrackMatchedView) {
    SG::WriteHandle<ConstDataVector<EgammaRecContainer>> trackMatchedEgammaRecs(
      m_trackMatchedEgammaRecs, ctx);
 
    auto viewCopy =
      std::make_unique<ConstDataVector<EgammaRecContainer>>(SG::VIEW_ELEMENTS);
 
    if (m_doTrackMatching) {
      for (const egammaRec* eg : *egammaRecs) {
        if (eg->getNumberOfTrackParticles() > 0) {
          viewCopy->push_back(eg);
        }
      }
    }
    ATH_CHECK(trackMatchedEgammaRecs.record(std::move(viewCopy)));
  }
 
  return StatusCode::SUCCESS;
}

extraDeps_update_handler()

void AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::extraDeps_update_handler ( Gaudi::Details::PropertyBase & ExtraDeps )

protectedinherited

Add StoreName to extra input/output deps as needed.

use the logic of the VarHandleKey to parse the DataObjID keys supplied via the ExtraInputs and ExtraOuputs Properties to add the StoreName if it's not explicitly given

extraOutputDeps()

const DataObjIDColl & AthCommonReentrantAlgorithm< Gaudi::Algorithm >::extraOutputDeps ( ) const

overridevirtualinherited

Return the list of extra output dependencies.

This list is extended to include symlinks implied by inheritance relations.

Definition at line 94 of file AthCommonReentrantAlgorithm.cxx.

{
  // If we didn't find any symlinks to add, just return the collection
  // from the base class.  Otherwise, return the extended collection.
  if (!m_extendedExtraObjects.empty()) {
    return m_extendedExtraObjects;
  }
  return BaseAlg::extraOutputDeps();
}

filterPassed()

virtual bool AthCommonReentrantAlgorithm< Gaudi::Algorithm >::filterPassed ( const EventContext & ctx ) const

inlinevirtualinherited

Definition at line 96 of file AthCommonReentrantAlgorithm.h.

                                                           {
    return execState( ctx ).filterPassed();
  }

initialize()

StatusCode egammaRecBuilder::initialize ( )

finaloverridevirtual

Definition at line 28 of file egammaRecBuilder.cxx.

{
  // First the data handle keys
  ATH_CHECK(m_inputClusterContainerKey.initialize());
  ATH_CHECK(m_egammaRecContainerKey.initialize());
  ATH_CHECK(m_trackMatchedEgammaRecs.initialize(m_doTrackMatchedView));
  // retrieve track match builder
  ATH_CHECK(RetrieveTool<IEMTrackMatchBuilder>(m_trackMatchBuilder, m_doTrackMatching));
  // retrieve conversion builder
  ATH_CHECK(RetrieveTool<IEMConversionBuilder>(m_conversionBuilder, m_doConversions));
  return StatusCode::SUCCESS;
}

inputHandles()

virtual std::vector< Gaudi::DataHandle * > AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::inputHandles ( ) const

overridevirtualinherited

Return this algorithm's input handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

isClonable()

bool AthCommonReentrantAlgorithm< Gaudi::Algorithm >::isClonable ( ) const

overridevirtualinherited

Specify if the algorithm is clonable.

Reentrant algorithms are clonable.

Reimplemented in InDet::GNNSeedingTrackMaker, InDet::SCT_Clusterization, InDet::SiSPGNNTrackMaker, InDet::SiSPSeededTrackFinder, InDet::SiTrackerSpacePointFinder, ITkPixelCablingAlg, ITkStripCablingAlg, RoIBResultToxAOD, SCT_ByteStreamErrorsTestAlg, SCT_CablingCondAlgFromCoraCool, SCT_CablingCondAlgFromText, SCT_ConditionsParameterTestAlg, SCT_ConditionsSummaryTestAlg, SCT_ConfigurationConditionsTestAlg, SCT_FlaggedConditionTestAlg, SCT_LinkMaskingTestAlg, SCT_MajorityConditionsTestAlg, SCT_ModuleVetoTestAlg, SCT_MonitorConditionsTestAlg, SCT_PrepDataToxAOD, SCT_RawDataToxAOD, SCT_ReadCalibChipDataTestAlg, SCT_ReadCalibDataTestAlg, SCT_RODVetoTestAlg, SCT_SensorsTestAlg, SCT_SiliconConditionsTestAlg, SCT_StripVetoTestAlg, SCT_TdaqEnabledTestAlg, SCT_TestCablingAlg, SCTEventFlagWriter, SCTRawDataProvider, SCTSiLorentzAngleTestAlg, SCTSiPropertiesTestAlg, and Simulation::BeamEffectsAlg.

Definition at line 68 of file AthCommonReentrantAlgorithm.cxx.

{
  // Reentrant algorithms are clonable.
  return true;
}

msg()

MsgStream & AthCommonMsg< Gaudi::Algorithm >::msg ( ) const

inlineinherited

Definition at line 24 of file AthCommonMsg.h.

                                {
    return this->msgStream();
  }

msgLvl()

bool AthCommonMsg< Gaudi::Algorithm >::msgLvl ( const MSG::Level lvl ) const

inlineinherited

Definition at line 30 of file AthCommonMsg.h.

                                               {
    return this->msgLevel(lvl);
  }

outputHandles()

virtual std::vector< Gaudi::DataHandle * > AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::outputHandles ( ) const

overridevirtualinherited

Return this algorithm's output handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

renounce()

std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void > AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::renounce ( T & h )

inlineprotectedinherited

Definition at line 380 of file AthCommonDataStore.h.

  {
    h.renounce();
    PBASE::renounce (h);
  }

renounceArray()

void AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::renounceArray ( SG::VarHandleKeyArray & handlesArray )

inlineprotectedinherited

remove all handles from I/O resolution

Definition at line 364 of file AthCommonDataStore.h.

                                                          {
    handlesArray.renounce();
  }

RetrieveTool()

template<typename T>

StatusCode egammaRecBuilder::RetrieveTool ( ToolHandle< T > & tool, bool tool_requested )

private

Wrap tool retrieval, ensuring it was named and requested.

Definition at line 43 of file egammaRecBuilder.cxx.

{
  if (!tool_requested) {
    tool.disable();
    return StatusCode::SUCCESS;
  }
  if (tool.empty()) {
    ATH_MSG_INFO(tool.type() << " is empty");
    return StatusCode::FAILURE;
  }
  ATH_CHECK(tool.retrieve());
  return StatusCode::SUCCESS;
}

setFilterPassed()

virtual void AthCommonReentrantAlgorithm< Gaudi::Algorithm >::setFilterPassed ( bool state, const EventContext & ctx ) const

inlinevirtualinherited

Definition at line 100 of file AthCommonReentrantAlgorithm.h.

                                                                            {
    execState( ctx ).setFilterPassed( state );
  }

sysExecute()

StatusCode AthCommonReentrantAlgorithm< Gaudi::Algorithm >::sysExecute ( const EventContext & ctx )

overridevirtualinherited

Execute an algorithm.

We override this in order to work around an issue with the Algorithm base class storing the event context in a member variable that can cause crashes in MT jobs.

Definition at line 85 of file AthCommonReentrantAlgorithm.cxx.

{
  return BaseAlg::sysExecute (ctx);
}

sysInitialize()

StatusCode AthCommonReentrantAlgorithm< Gaudi::Algorithm >::sysInitialize ( )

overridevirtualinherited

Override sysInitialize.

Override sysInitialize from the base class.

Loop through all output handles, and if they're WriteCondHandles, automatically register them and this Algorithm with the CondSvc

Scan through all outputHandles, and if they're WriteCondHandles, register them with the CondSvc

Reimplemented from AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >.

Reimplemented in HypoBase, and InputMakerBase.

Definition at line 61 of file AthCommonReentrantAlgorithm.cxx.

                                                               {
  StatusCode sc=AthCommonDataStore<AthCommonMsg<BaseAlg>>::sysInitialize();
 
  if (sc.isFailure()) {
    return sc;
  }
  
  ServiceHandle<ICondSvc> cs("CondSvc",name());
  for (auto h : outputHandles()) {
    if (h->isCondition() && h->mode() == Gaudi::DataHandle::Writer) {
      // do this inside the loop so we don't create the CondSvc until needed
      if ( cs.retrieve().isFailure() ) {
        ATH_MSG_WARNING("no CondSvc found: won't autoreg WriteCondHandles");
        return StatusCode::SUCCESS;
      }      
      if (cs->regHandle(this,*h).isFailure()) {
        sc = StatusCode::FAILURE;
        ATH_MSG_ERROR("unable to register WriteCondHandle " << h->fullKey()
                      << " with CondSvc");
      }
    }
  }
  return sc;  
}

sysStart()

virtual StatusCode AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::sysStart ( )

overridevirtualinherited

Handle START transition.

We override this in order to make sure that conditions handle keys can cache a pointer to the conditions container.

updateVHKA()

void AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::updateVHKA ( Gaudi::Details::PropertyBase & )

inlineinherited

Definition at line 308 of file AthCommonDataStore.h.

                                               {
    // debug() << "updateVHKA for property " << p.name() << " " << p.toString() 
    //         << "  size: " << m_vhka.size() << endmsg;
    for (auto &a : m_vhka) {
      std::vector<SG::VarHandleKey*> keys = a->keys();
      for (auto k : keys) {
        k->setOwner(this);
      }
    }
  }

Member Data Documentation

m_conversionBuilder

ToolHandle<IEMConversionBuilder> egammaRecBuilder::m_conversionBuilder

private

Initial value:

{
    this,
    "ConversionBuilderTool",
    "EMConversionBuilder",
    "Tool that matches conversion vertices to egammaRecs"
  }

Tool to perfrom conversion vertex matching.

Definition at line 84 of file egammaRecBuilder.h.

                                                      {
    this,
    "ConversionBuilderTool",
    "EMConversionBuilder",
    "Tool that matches conversion vertices to egammaRecs"
  };

m_detStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::m_detStore

privateinherited

Pointer to StoreGate (detector store by default)

Definition at line 393 of file AthCommonDataStore.h.

m_doConversions

Gaudi::Property<bool> egammaRecBuilder::m_doConversions

private

Initial value:

{ this,
                                         "doConversions",
                                         true,
                                         "Boolean to do conversion matching" }

private member flag to do the conversion matching

Definition at line 98 of file egammaRecBuilder.h.

                                     { this,
                                         "doConversions",
                                         true,
                                         "Boolean to do conversion matching" };

m_doTrackMatchedView

Gaudi::Property<bool> egammaRecBuilder::m_doTrackMatchedView

private

Initial value:

{
    this,
    "doTrackMatchedView",
    false,
    "Produce a view of the egammaRecs that have an attached track"
  }

private member flag to produce of view of track matched egammaRecs

Definition at line 105 of file egammaRecBuilder.h.

                                          {
    this,
    "doTrackMatchedView",
    false,
    "Produce a view of the egammaRecs that have an attached track"
  };

m_doTrackMatching

Gaudi::Property<bool> egammaRecBuilder::m_doTrackMatching

private

Initial value:

{ this,
                                           "doTrackMatching",
                                           true,
                                           "Boolean to do track matching" }

private member flag to do the track matching

Definition at line 92 of file egammaRecBuilder.h.

                                       { this,
                                           "doTrackMatching",
                                           true,
                                           "Boolean to do track matching" };

m_egammaRecContainerKey

SG::WriteHandleKey<EgammaRecContainer> egammaRecBuilder::m_egammaRecContainerKey

private

Initial value:

{
    this,
    "egammaRecContainer",
    "egammaRecCollection",
    "Output container for egammaRec objects"
  }

Key for egammaRec container.

Definition at line 61 of file egammaRecBuilder.h.

                                                              {
    this,
    "egammaRecContainer",
    "egammaRecCollection",
    "Output container for egammaRec objects"
  };

m_evtStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::m_evtStore

privateinherited

Pointer to StoreGate (event store by default)

Definition at line 390 of file AthCommonDataStore.h.

m_extendedExtraObjects

DataObjIDColl AthCommonReentrantAlgorithm< Gaudi::Algorithm >::m_extendedExtraObjects

privateinherited

Extra output dependency collection, extended by AthAlgorithmDHUpdate to add symlinks.

Empty if no symlinks were found.

Definition at line 114 of file AthCommonReentrantAlgorithm.h.

m_inputClusterContainerKey

SG::ReadHandleKey<xAOD::CaloClusterContainer> egammaRecBuilder::m_inputClusterContainerKey

private

Initial value:

{
    this,
    "InputClusterContainerName",
    "egammaTopoCluster",
    "Name of input cluster container"
  }

Key for the topo cluster input collection.

Definition at line 53 of file egammaRecBuilder.h.

                                                                      {
    this,
    "InputClusterContainerName",
    "egammaTopoCluster",
    "Name of input cluster container"
  };

m_trackMatchBuilder

ToolHandle<IEMTrackMatchBuilder> egammaRecBuilder::m_trackMatchBuilder

private

Initial value:

{
    this,
    "TrackMatchBuilderTool",
    "EMTrackMatchBuilder",
    "Tool that matches tracks to egammaRecs"
  }

Tool to perform track matching.

Definition at line 76 of file egammaRecBuilder.h.

                                                      {
    this,
    "TrackMatchBuilderTool",
    "EMTrackMatchBuilder",
    "Tool that matches tracks to egammaRecs"
  };

m_trackMatchedEgammaRecs

SG::WriteHandleKey<ConstDataVector<EgammaRecContainer> > egammaRecBuilder::m_trackMatchedEgammaRecs

private

Initial value:

{
      this,
      "trackMatchedEgammaRecs",
      "trackMatchedEgammaRecs",
      "View container of the track matched egammaRecs"
    }

Definition at line 69 of file egammaRecBuilder.h.

                            {
      this,
      "trackMatchedEgammaRecs",
      "trackMatchedEgammaRecs",
      "View container of the track matched egammaRecs"
    };

m_varHandleArraysDeclared

bool AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::m_varHandleArraysDeclared

privateinherited

Definition at line 399 of file AthCommonDataStore.h.

m_vhka

std::vector<SG::VarHandleKeyArray*> AthCommonDataStore< AthCommonMsg< Gaudi::Algorithm > >::m_vhka

privateinherited

Definition at line 398 of file AthCommonDataStore.h.

---

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

• egammaRecBuilder.h
• egammaRecBuilder.cxx