feat(schema): add `composite` to some relations linking dataset/rq task etc

related: #83

cubicweb_rodolf/schema.py

@@ -34,7 +34,9 @@
     virtuoso_password = String(required=True)
     ontology_file = SubjectRelation("File", cardinality="??", inlined=True)
     shacl_files = SubjectRelation("File", cardinality="**")
-    import_recipes = SubjectRelation("ImportRecipe", cardinality="*?")
+    import_recipes = SubjectRelation(
+        "ImportRecipe", cardinality="*?", composite="subject"
+    )
     activated = Boolean(required=True, default=True)
 
 
@@ -56,7 +58,7 @@
 
 class ImportRecipe(EntityType):
     name = String(required=True)
-    dataservice = SubjectRelation("DataService", cardinality="1*")
+    dataservice = SubjectRelation("DataService", cardinality="1*", composite="object")
     graph_uri = String()
     process_type = String(
         required=True,
@@ -66,5 +68,7 @@
 
 
 class ImportProcess(WorkflowableEntityType):
-    import_recipe = SubjectRelation("ImportRecipe", cardinality="1*", inlined=True)
+    import_recipe = SubjectRelation(
+        "ImportRecipe", cardinality="1*", inlined=True, composite="object"
+    )
     import_procedure = SubjectRelation(
@@ -70,3 +74,6 @@
     import_procedure = SubjectRelation(
-        "ImportProcedure", cardinality="1*", inlined=True
+        "ImportProcedure", cardinality="1*", inlined=True, composite="object"
+    )
+    rq_task = SubjectRelation(
+        "RqTask", cardinality="11", inlined=True, composite="subject"
     )
@@ -72,6 +79,11 @@
     )
-    rq_task = SubjectRelation("RqTask", cardinality="11", inlined=True)
-    has_input_dataset = SubjectRelation("File", cardinality="??", inlined=True)
-    has_output_dataset = SubjectRelation("File", cardinality="??", inlined=True)
-    import_report = SubjectRelation("File", cardinality="??", inlined=True)
+    has_input_dataset = SubjectRelation(
+        "File", cardinality="??", inlined=True, composite="subject"
+    )
+    has_output_dataset = SubjectRelation(
+        "File", cardinality="??", inlined=True, composite="subject"
+    )
+    import_report = SubjectRelation(
+        "File", cardinality="??", inlined=True, composite="subject"
+    )
     shacl_valid = Boolean()
@@ -77,2 +89,4 @@
     shacl_valid = Boolean()
-    shacl_report = SubjectRelation("File", cardinality="??", inlined=True)
+    shacl_report = SubjectRelation(
+        "File", cardinality="??", inlined=True, composite="subject"
+    )