[PWGEM/Dilepton] reduce charged track size (#12497)

Co-authored-by: ALICE Action Bot <alibuild@cern.ch>

Author: dsekihat

PWGEM/Dilepton/DataModel/dileptonTables.h

@@ -769,12 +769,19 @@ DECLARE_SOA_COLUMN(CollisionId, collisionId, int); //!
 DECLARE_SOA_COLUMN(TrackId, trackId, int);         //!
 DECLARE_SOA_COLUMN(Sign, sign, int8_t);            //!
 DECLARE_SOA_COLUMN(TrackBit, trackBit, uint16_t);  //!
+DECLARE_SOA_DYNAMIC_COLUMN(Pt, pt, [](float signed1Pt) -> float { return 1.f / std::fabs(signed1Pt); });
 } // namespace emprimarytrack
 
 DECLARE_SOA_TABLE_VERSIONED(EMPrimaryTracks_000, "AOD", "EMPRIMARYTRACK", 0, //! primary charged track table for 2PC
                             o2::soa::Index<>, emprimarytrack::CollisionId, emprimarytrack::TrackId, emprimarytrack::Sign, track::Pt, track::Eta, track::Phi, emprimarytrack::TrackBit);
 
-using EMPrimaryTracks = EMPrimaryTracks_000;
+DECLARE_SOA_TABLE_VERSIONED(EMPrimaryTracks_001, "AOD", "EMPRIMARYTRACK", 1, //! primary charged track table for 2PC
+                            o2::soa::Index<>, emprimarytrack::CollisionId, emprimarytrack::TrackId,
+                            track::Signed1Pt, track::Eta, track::Phi, emprimarytrack::TrackBit,
+                            // dynamic column
+                            track::Sign<track::Signed1Pt>, emprimarytrack::Pt<track::Signed1Pt>);
+
+using EMPrimaryTracks = EMPrimaryTracks_001;
 // iterators
 using EMPrimaryTrack = EMPrimaryTracks::iterator;
 

PWGEM/Dilepton/TableProducer/skimmerPrimaryTrack.cxx

@@ -331,7 +331,7 @@ struct skimmerPrimaryTrack {
         trackBit |= static_cast<uint16_t>(RefTrackBit::kDCAxy03cm);
       }
 
-      emprimarytracks(collision.globalIndex(), track.globalIndex(), track.sign(), pt, eta, phi, trackBit);
+      emprimarytracks(collision.globalIndex(), track.globalIndex(), track.sign() / pt, eta, phi, trackBit);
       // prmtrackeventidtmp(collision.globalIndex());
 
       stored_trackIds.emplace_back(std::pair<int, int>{collision.globalIndex(), track.globalIndex()});

PWGEM/Dilepton/Tasks/Converters/CMakeLists.txt

@@ -35,3 +35,8 @@ o2physics_add_dpl_workflow(electron-converter4
                   PUBLIC_LINK_LIBRARIES O2::Framework O2Physics::AnalysisCore
                   COMPONENT_NAME Analysis)
 
+o2physics_add_dpl_workflow(track-converter1
+                  SOURCES trackConverter1.cxx
+                  PUBLIC_LINK_LIBRARIES O2::Framework O2Physics::AnalysisCore
+                  COMPONENT_NAME Analysis)
+

PWGEM/Dilepton/Tasks/Converters/trackConverter1.cxx

@@ -0,0 +1,48 @@
+// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
+// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
+// All rights not expressly granted are reserved.
+//
+// This software is distributed under the terms of the GNU General Public
+// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
+//
+// In applying this license CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+//
+// ========================
+//
+// This code runs loop over ULS ee pars for virtual photon QC.
+//    Please write to: daiki.sekihata@cern.ch
+
+#include "PWGEM/Dilepton/DataModel/dileptonTables.h"
+
+#include "Framework/ASoAHelpers.h"
+#include "Framework/AnalysisTask.h"
+#include "Framework/runDataProcessing.h"
+
+using namespace o2;
+using namespace o2::aod;
+using namespace o2::framework;
+using namespace o2::framework::expressions;
+using namespace o2::soa;
+
+struct trackConverter1 {
+  Produces<aod::EMPrimaryTracks_001> track_001;
+
+  void process(aod::EMPrimaryTracks_000 const& tracks)
+  {
+    for (auto& track : tracks) {
+      track_001(track.collisionId(),
+                track.trackId(),
+                track.sign() / track.pt(),
+                track.eta(),
+                track.phi(),
+                track.trackBit());
+    } // end of track loop
+  }
+};
+
+WorkflowSpec defineDataProcessing(ConfigContext const& cfgc)
+{
+  return WorkflowSpec{adaptAnalysisTask<trackConverter1>(cfgc, TaskName{"track-converter1"})};
+}