Remove the colorFlow member from the MCParticle

Not actually used anywhere

CMakeLists.txt

@@ -5,7 +5,7 @@ project(EDM4HEP LANGUAGES CXX)
 # project version
 SET( ${PROJECT_NAME}_VERSION_MAJOR 0 )
 SET( ${PROJECT_NAME}_VERSION_MINOR 99 )
-SET( ${PROJECT_NAME}_VERSION_PATCH 1 )
+SET( ${PROJECT_NAME}_VERSION_PATCH 99 )
 
 SET( ${PROJECT_NAME}_VERSION  "${${PROJECT_NAME}_VERSION_MAJOR}.${${PROJECT_NAME}_VERSION_MINOR}.${${PROJECT_NAME}_VERSION_PATCH}" )
 

edm4hep.yaml

@@ -266,7 +266,6 @@ datatypes:
       - edm4hep::Vector3d momentum [GeV]            // particle 3-momentum at the production vertex
       - edm4hep::Vector3d momentumAtEndpoint [GeV]  // particle 3-momentum at the endpoint
       - edm4hep::Vector3f spin                 // spin (helicity) vector of the particle
-      - edm4hep::Vector2i colorFlow                // color flow as defined by the generator
     OneToManyRelations:
       - edm4hep::MCParticle parents // The parents of this particle
       - edm4hep::MCParticle daughters // The daughters this particle

scripts/createEDM4hepFile.py

@@ -52,7 +52,6 @@ def create_MCParticleCollection():
             edm4hep.Vector3d(next(counter), next(counter), next(counter))
         )
         particle.setSpin(edm4hep.Vector3f(next(counter), next(counter), next(counter)))
-        particle.setColorFlow(edm4hep.Vector2i(next(counter), next(counter)))
 
     p_list[0].addToDaughters(p_list[1])
     p_list[0].addToParents(p_list[2])

test/test_EDM4hepFile.py

@@ -95,6 +95,11 @@ def track(event):
     return event.get("TrackCollection")[0]
 
 
+@pytest.fixture(scope="module")
+def edm4hep_version(reader):
+    return reader.current_file_version("edm4hep")
+
+
 def check_cov_matrix(cov_matrix, n_dim):
     """Check the contents of the passed covariance matrix"""
     counter = count(COUNT_START)
@@ -125,7 +130,7 @@ def test_EventHeaderCollection(event):
         assert weight == next(counter)
 
 
-def test_MCParticleCollection(event):
+def test_MCParticleCollection(event, edm4hep_version):
     """Check the MCParticleCollection"""
     counter = count(COUNT_START)
     particles = event.get("MCParticleCollection")
@@ -151,7 +156,12 @@ def test_MCParticleCollection(event):
             next(counter), next(counter), next(counter)
         )
         assert particle.getSpin() == edm4hep.Vector3f(next(counter), next(counter), next(counter))
-        assert particle.getColorFlow() == edm4hep.Vector2i(next(counter), next(counter))
+
+        if edm4hep_version < podio.version.parse("0.99.2"):
+            # The colorFlow as here so we have increase the counter here to
+            # maintain the expected values for all elements of the collection
+            next(counter)
+            next(counter)
 
     assert particles[0].getDaughters()[0] == particles[1]
     assert particles[0].getParents()[0] == particles[2]

test/utils/test_kinematics.py

@@ -34,7 +34,6 @@ def test_p4(self):
             edm4hep.Vector3d(1.0, 2.0, 3.0),  # momentum
             edm4hep.Vector3d(0, 0, 0),  # momentumAtEndpoint
             edm4hep.Vector3f(0, 0, 0),  # spin
-            edm4hep.Vector2i(0, 0),  # colorFlow
         )
 
         self.assertEqual(p4(p), LVM(1.0, 2.0, 3.0, 125.0))