PixelClusterContainerCnv_p3.cxx

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
#include "InDetEventTPCnv/PixelClusterContainerCnv_p3.h"
 
// Athena
#include "AthenaKernel/errorcheck.h"
#include "Identifier/Identifier.h"
#include "InDetIdentifier/PixelID.h"
#include "InDetEventTPCnv/InDetPrepRawData/InDetPRD_Collection_p2.h"
#include "InDetEventTPCnv/PixelClusterContainer_p3.h"
#include "InDetEventTPCnv/InDetPrepRawData/PixelCluster_p3.h"
#include "InDetEventTPCnv/InDetPrepRawData/PixelClusterCnv_p3.h"
#include "InDetPrepRawData/PixelCluster.h"
#include "InDetPrepRawData/PixelClusterContainer.h"
#include "StoreGate/ReadCondHandle.h"
#include "StoreGate/StoreGateSvc.h"
 
// Gaudi
#include "GaudiKernel/Bootstrap.h"
#include "GaudiKernel/ISvcLocator.h"
#include "GaudiKernel/MsgStream.h"
#include "GaudiKernel/Service.h"
#include "GaudiKernel/StatusCode.h"
 
void PixelClusterContainerCnv_p3::transToPers(const InDet::PixelClusterContainer* transCont, InDet::PixelClusterContainer_p3* persCont, MsgStream &log) {
 
    // The transient model has a container holding collections and the
    // collections hold channels.
    //
    // The persistent model flattens this so that the persistent
    // container has two vectors:
    //   1) all collections, and
    //   2) all PRD
    //
    // The persistent collections, then only maintain indexes into the
    // container's vector of all channels. 
    //
    // So here we loop over all collection and add their channels
    // to the container's vector, saving the indexes in the
    // collection. 
 
    using TRANS = InDet::PixelClusterContainer;
        
    // this is the id of the latest collection read in
    // This starts from the base of the TRT identifiers
    unsigned int idLast(0);
 
    // 
    //PixelClusterCnv_p3  chanCnv;
    if(!m_isInitialized) {
      if (this->initialize(log) != StatusCode::SUCCESS) {
    log << MSG::FATAL << "Could not initialize PixelClusterContainerCnv_p3 " << endmsg;
      }
    }
    PixelClusterCnv_p3  chanCnv(m_pixId);
 
    TRANS::const_iterator it_Coll     = transCont->begin();
    TRANS::const_iterator it_CollEnd  = transCont->end();
    unsigned int collIndex;
    unsigned int chanBegin = 0;
    unsigned int chanEnd = 0;
    persCont->m_collections.resize(transCont->numberOfCollections());
    //    if (log.level() <= MSG::DEBUG) log << MSG::DEBUG  << " Preparing " << persCont->m_collections.size() << "Collections" << endmsg;
    for (collIndex = 0; it_Coll != it_CollEnd; ++collIndex, ++it_Coll)  {
        // Add in new collection
        const InDet::PixelClusterCollection& collection = (**it_Coll);
        chanBegin  = chanEnd;
        chanEnd   += collection.size();
        InDet::InDetPRD_Collection_p2& pcollection = persCont->m_collections[collIndex];
    unsigned int deltaId = (collection.identifyHash()-idLast);
 
        pcollection.m_hashId = deltaId;
    idLast=collection.identifyHash();
        pcollection.m_size = collection.size();
        // Add in channels
        persCont->m_rawdata.resize(chanEnd);
        for (unsigned int i = 0; i < collection.size(); ++i) {
            InDet::PixelCluster_p3* pchan = &(persCont->m_rawdata[i + chanBegin]);
            const InDet::PixelCluster* chan = static_cast<const InDet::PixelCluster*>(collection[i]);
            chanCnv.transToPers(chan, pchan, log);
        }
    }
}
 
void  PixelClusterContainerCnv_p3::persToTrans(const InDet::PixelClusterContainer_p3* persCont, InDet::PixelClusterContainer* transCont, MsgStream &log) 
{
 
    // The transient model has a container holding collections and the
    // collections hold channels.
    //
    // The persistent model flattens this so that the persistent
    // container has two vectors:
    //   1) all collections, and
    //   2) all channels
    //
    // The persistent collections, then only maintain indexes into the
    // container's vector of all channels. 
    //
    // So here we loop over all collection and extract their channels
    // from the vector.
 
    const InDetDD::SiDetectorElementCollection* elements(nullptr);
    if (m_useDetectorElement) {
    try {
        SG::ReadCondHandle<InDetDD::SiDetectorElementCollection> pixelDetEleHandle1(m_pixelDetEleCollKey);
        elements = pixelDetEleHandle1.cptr();
    } catch (const SG::ExcNoCondCont& e) {
          log << MSG::DEBUG << m_pixelDetEleCollKey << " is not available - probably RUN4, trying "<<m_pixelITkEleCollKey<<" instead."<< endmsg;
    // If the first key fails, try the second key
       try {
             SG::ReadCondHandle<InDetDD::SiDetectorElementCollection> pixelDetEleHandle2(m_pixelITkEleCollKey);
             elements = pixelDetEleHandle2.cptr();
         } catch (const SG::ExcNoCondCont& e) {
             log << MSG::FATAL << "No valid Pixel detector element collection keys available." << endmsg;
             return;
           }
       }
    }
 
    InDet::PixelClusterCollection* coll = nullptr;
 
    //PixelClusterCnv_p3  chanCnv;
    PixelClusterCnv_p3  chanCnv(m_pixId);
    unsigned int collBegin(0);
    // this is the id of the latest collection read in
    // This starts from the base of the TRT identifiers
    unsigned int idLast(0);
    //    if (log.level() <= MSG::DEBUG) log << MSG::DEBUG  << " Reading " << persCont->m_collections.size() << "Collections" << endmsg;
    for (unsigned int icoll = 0; icoll < persCont->m_collections.size(); ++icoll) {
 
        // Create trans collection - in NOT owner of PixelDriftCircle (SG::VIEW_ELEMENTS)
    // IDet collection don't have the Ownership policy c'tor
        const InDet::InDetPRD_Collection_p2& pcoll = persCont->m_collections[icoll];       
        idLast += pcoll.m_hashId;
        // Identifier collID= Identifier(idLast);
        IdentifierHash collIDHash=IdentifierHash((unsigned int) idLast);
        Identifier collID = m_pixId->wafer_id(collIDHash);
        coll = new InDet::PixelClusterCollection(collIDHash);
        coll->setIdentifier(Identifier(collID));
        unsigned int nchans           = pcoll.m_size;
        coll->resize(nchans);
        const InDetDD::SiDetectorElement * de = (elements==nullptr ? nullptr : elements->getDetectorElement(collIDHash));
        // Fill with channels:
        // This is used to read the vector of errMat
        // values and lenght of the value are specified in separate vectors
        //    if (log.level() <= MSG::DEBUG) log << MSG::DEBUG << "Reading collection with " << nchans << "Channels " << endmsg;
        for (unsigned int ichan = 0; ichan < nchans; ++ ichan) {
            const InDet::PixelCluster_p3* pchan = &(persCont->m_rawdata[ichan + collBegin]);
            // In preparation for 64-bit ids, set the initial cluster
            // id to the wafer id. Actual cluster id will be set in
            // the converter from diff.
            InDet::PixelCluster* chan = new InDet::PixelCluster
              (chanCnv.createPixelCluster (pchan, collID, de, log));
        // DC Bugfix: Set the hash index!
            chan->setHashAndIndex(collIDHash, ichan);
            (*coll)[ichan] = chan;
        }
        collBegin += pcoll.m_size;
 
        // register the PRD collection in IDC with hash - faster addCollection
        StatusCode sc = transCont->addCollection(coll, collIDHash);
        if (sc.isFailure()) {
            throw std::runtime_error("Failed to add collection to ID Container");
        }
    //        if (log.level() <= MSG::DEBUG) {
    //            log << MSG::DEBUG << "AthenaPoolTPCnvIDCont::persToTrans, collection, hash_id/coll id = " << (int) collIDHash << " / " << collID << ", added to Identifiable container." << endmsg;
    //        }
    }
 
    //    if (log.level() <= MSG::DEBUG) log << MSG::DEBUG  << " ***  Reading InDet::PixelClusterContainer" << endmsg;
}
 
 
 
//================================================================
InDet::PixelClusterContainer* PixelClusterContainerCnv_p3::createTransient(const InDet::PixelClusterContainer_p3* persObj, MsgStream& log) {
    //    if (log.level() <= MSG::DEBUG) log << MSG::DEBUG << "PixelClusterContainerCnv_p3::createTransient called " << endmsg;
    if(!m_isInitialized) {
     if (this->initialize(log) != StatusCode::SUCCESS) {
      log << MSG::FATAL << "Could not initialize PixelClusterContainerCnv_p3 " << endmsg;
     }
    }
    if (not m_pixId) {
      log << MSG::FATAL << "nullptr for m_pixId in PixelClusterContainerCnv_p3::createTransient" << endmsg;
      return nullptr;
    }
    std::unique_ptr<InDet::PixelClusterContainer> trans(std::make_unique<InDet::PixelClusterContainer>(m_pixId->wafer_hash_max()));
    persToTrans(persObj, trans.get(), log);
    return(trans.release());
}
 
 
StatusCode PixelClusterContainerCnv_p3::initialize(MsgStream&) {
   // Do not initialize again:
   m_isInitialized=true;
 
   // Get Storegate, ID helpers, and so on
   SmartIF<StoreGateSvc> detStore{Gaudi::svcLocator()->service("DetectorStore")};
   CHECK( detStore.isValid() );
 
   // Get the Pixel helper from the detector store
   CHECK( detStore->retrieve(m_pixId, "PixelID") );
 
   CHECK(m_pixelDetEleCollKey.initialize(m_useDetectorElement));
   CHECK(m_pixelITkEleCollKey.initialize(m_useDetectorElement));
 
   return StatusCode::SUCCESS;
}
 
void PixelClusterContainerCnv_p3::setUseDetectorElement(const bool useDetectorElement) {
  m_useDetectorElement = useDetectorElement;
}