ST6RI-925 Problem with deriveTypeFeatureMembership (KERML11-191)

org.omg.sysml.interactive.tests/src/org/omg/sysml/interactive/tests/DerivedPropertyAndOperationTest.java

@@ -45,11 +45,13 @@
 import org.omg.sysml.lang.sysml.EnumerationUsage;
 import org.omg.sysml.lang.sysml.Expression;
 import org.omg.sysml.lang.sysml.Feature;
+import org.omg.sysml.lang.sysml.FeatureMembership;
 import org.omg.sysml.lang.sysml.ItemUsage;
 import org.omg.sysml.lang.sysml.Membership;
 import org.omg.sysml.lang.sysml.Namespace;
 import org.omg.sysml.lang.sysml.Relationship;
 import org.omg.sysml.lang.sysml.TriggerInvocationExpression;
+import org.omg.sysml.lang.sysml.Type;
 import org.omg.sysml.lang.sysml.Usage;
 import org.omg.sysml.lang.sysml.ViewUsage;
 
@@ -354,6 +356,36 @@ public void testLocale() throws Exception {
 		assertEquals("doc.locale", "en_US", doc.getLocale());
 	}
 
+	public final String featureMembershipTest =
+			  "package Test {\n"
+			+ "	   part def A {\n"
+			+ "		   attribute f;\n"
+			+ "	   }\n"
+			+ "	   part def B {\n"
+			+ "		   public import A::*;\n"
+			+ "        feature g;\n"
+			+ "	   }\n"
+			+ "	   part def C :> B;"
+			+ "}";
+
+	@Test
+	public void testFeatureMembership() throws Exception {
+		SysMLInteractive instance = getSysMLInteractiveInstance();
+		SysMLInteractiveResult result = instance.process(featureMembershipTest);
+		Element root = result.getRootElement();
+		List<Element> elements = ((Namespace)root).getOwnedMember();
+		List<Element> ownedMembers = ((Namespace)elements.get(0)).getOwnedMember();
+		Definition A = (Definition)ownedMembers.get(0);
+		Definition B = (Definition)ownedMembers.get(1);
+		Definition C = (Definition)ownedMembers.get(2);
+		assertTrue("A", testFeatureOwningTypes(A));
+		assertTrue("B", testFeatureOwningTypes(B));
+		assertTrue("C", testFeatureOwningTypes(C));
+	}
+
+	private boolean testFeatureOwningTypes(Type type) {
+		return type.getFeatureMembership().stream().map(FeatureMembership::getOwningType).allMatch(t->type.specializes(t));
+
 	public final String crossFeatureTest =
 			  "package Test {"
 			+ "    part def A {"

org.omg.sysml/src/org/omg/sysml/adapter/TypeAdapter.java

@@ -46,6 +46,7 @@
 import org.omg.sysml.lang.sysml.Element;
 import org.omg.sysml.lang.sysml.Expression;
 import org.omg.sysml.lang.sysml.Feature;
+import org.omg.sysml.lang.sysml.FeatureMembership;
 import org.omg.sysml.lang.sysml.Specialization;
 import org.omg.sysml.lang.sysml.Membership;
 import org.omg.sysml.lang.sysml.ResultExpressionMembership;
@@ -202,18 +203,38 @@ protected Collection<Feature> getFeaturesRedefinedByType() {
 		}
 		return redefinedFeatures;		
 	}
+
+	public EList<FeatureMembership> getFeatureMembership() {
+		if (featureMembership == null) {
+			Type target = getTarget();
+			EList<FeatureMembership> featureMemberships = new NonNotifyingEObjectEList<FeatureMembership>(FeatureMembership.class, (InternalEObject) target, SysMLPackage.TYPE__FEATURE_MEMBERSHIP);
+			featureMemberships.addAll(target.getOwnedFeatureMembership());
+			// For improved performance, compute supertypes only once.
+			List<Type> allSupertypes = target.allSupertypes();
+			for (Membership membership: target.getInheritedMembership()) {
+				if (membership instanceof FeatureMembership && 
+						allSupertypes.contains(membership.getMembershipOwningNamespace())) {
+					featureMemberships.add((FeatureMembership)membership);
+				}
+			}
+			featureMembership = featureMemberships;
+		}
+		return featureMembership;
+	}
 
 	// Caching
 
 	private EList<Membership> inheritedMembership = null;
 	private EList<Membership> nonPrivateMembership = null;
-	private Collection<Feature> redefinedFeatures = null;	
+	private Collection<Feature> redefinedFeatures = null;
+	private EList<FeatureMembership> featureMembership = null;
 
 	public void clearCaches() {
 		super.clearCaches();
 		inheritedMembership = null;
 		nonPrivateMembership = null;
 		redefinedFeatures = null;
+		featureMembership = null;
 	}
 
 	// Implicit Elements

org.omg.sysml/src/org/omg/sysml/delegate/setting/Type_featureMembership_SettingDelegate.java

@@ -1,7 +1,7 @@
 /*******************************************************************************
  * SysML 2 Pilot Implementation
  * Copyright (c) 2022 Siemens AG
- * Copyright (c) 2022 Model Driven Solutions, Inc.
+ * Copyright (c) 2022, 2026 Model Driven Solutions, Inc.
  *    
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published by
@@ -25,9 +25,8 @@
 import org.eclipse.emf.common.util.EList;
 import org.eclipse.emf.ecore.EStructuralFeature;
 import org.eclipse.emf.ecore.InternalEObject;
-import org.omg.sysml.lang.sysml.FeatureMembership;
 import org.omg.sysml.lang.sysml.Type;
-import org.omg.sysml.util.NonNotifyingEObjectEList;
+import org.omg.sysml.util.TypeUtil;
 
 public class Type_featureMembership_SettingDelegate extends BasicDerivedListSettingDelegate {
 
@@ -37,13 +36,7 @@ public Type_featureMembership_SettingDelegate(EStructuralFeature eStructuralFeat
 
 	@Override
 	protected EList<?> basicGet(InternalEObject owner) {
-		EList<FeatureMembership> featureMemberships = new NonNotifyingEObjectEList<>(FeatureMembership.class, owner, eStructuralFeature.getFeatureID());
-		featureMemberships.addAll(((Type)owner).getOwnedFeatureMembership());
-		((Type)owner).getInheritedMembership().stream().
-			filter(FeatureMembership.class::isInstance).
-			map(FeatureMembership.class::cast).
-			forEachOrdered(featureMemberships::add);
-		return featureMemberships;
+		return TypeUtil.getFeatureMembershipOf((Type)owner);
 	}
 
 }

org.omg.sysml/src/org/omg/sysml/util/TypeUtil.java

@@ -1,6 +1,6 @@
 /*******************************************************************************
  * SysML 2 Pilot Implementation
- * Copyright (c) 2021-2022, 2024-2025 Model Driven Solutions, Inc.
+ * Copyright (c) 2021-2022, 2024-2026 Model Driven Solutions, Inc.
  *    
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published by
@@ -104,6 +104,10 @@ public static List<Feature> getFeaturesRedefinedBy(Type type, Feature skip) {
 				flatMap(feature->FeatureUtil.getRedefinedFeaturesWithComputedOf(feature).stream()).
 				toList();
 	}
+
+	public static EList<FeatureMembership> getFeatureMembershipOf(Type type) {
+		return getTypeAdapter(type).getFeatureMembership();
+	}
 
 	// Supertypes