fix: support both podio v0.16 and v0.17 relations and vector members

benchmarks/tracking/scripts/rec_multiple_tracks.cxx

@@ -91,8 +91,14 @@ auto delta_p_over_p = [](const std::vector<double>& tracks, const std::vector<do
 
 int rec_multiple_tracks(const char* fname = "topside/rec_multiple_tracks.root")
 {
-
   ROOT::EnableImplicitMT();
+
+  ROOT::RDataFrame podio_metadata_df("podio_metadata", fname);
+  auto podioBuildVersion_major = podio_metadata_df.Take<unsigned short>("PodioBuildVersion.major");
+  auto podioBuildVersion_minor = podio_metadata_df.Take<unsigned short>("PodioBuildVersion.minor");
+  auto podioBuildVersion = fmt::format("{:d}.{:d}", podioBuildVersion_major->front(), podioBuildVersion_minor->front());
+  std::cout << "podioBuildVersion: " << podioBuildVersion << std::endl;
+
   ROOT::RDataFrame df("events", fname);
 
   auto df0 = df.Define("isThrown", "MCParticles.generatorStatus == 1")
@@ -108,9 +114,15 @@ int rec_multiple_tracks(const char* fname = "topside/rec_multiple_tracks.root")
                  .Define("N_Hits",       [](std::vector<edm4eic::TrackerHitData> hits) { return hits.size();}, {"trackingHits"})
                  .Define("N_BarrelHits", [](std::vector<edm4eic::TrackerHitData> hits) { return hits.size();}, {"TrackerBarrelRecHits"})
                  .Define("N_EndcapHits", [](std::vector<edm4eic::TrackerHitData> hits) { return hits.size();}, {"TrackerEndcapRecHits"})
-                 .Define("zTrackSegments", z_segments, {"HcalEndcapNTrackSegments", "HcalEndcapNTrackSegments_0"})
                  ;
 
+  if (podioBuildVersion == "0.16") {
+    df0 = df0.Define("zTrackSegments", z_segments, {"HcalEndcapNTrackSegments", "HcalEndcapNTrackSegments_0"})
+  }
+  if (podioBuildVersion == "0.17") {
+    df0 = df0.Define("zTrackSegments", z_segments, {"HcalEndcapNTrackSegments", "_HcalEndcapNTrackSegments_points"})
+  }
+
   auto h_zTrackSegment = df0.Histo1D({"h_zTrackSegment", "z ; #z", 400, -400, 400}, "zTrackSegments");
 
   auto h_nTracks_vs_theta = df0.Histo2D({"h_nTracks_vs_theta", "; #theta; N tracks ", 40,0,180,10, 0, 10}, "theta0","nTracks");