[2176] Implement FramedConcernMembership attributes

CHANGELOG.adoc

@@ -93,6 +93,7 @@ Both tools optionally allow selecting an existing `StateUsage` to exhibit.
 
 - https://github.com/eclipse-syson/syson/issues/1979[#1979] [diagrams] Add tools to create timeslices and snapshots, available on `OccurrenceUsage`, `ItemUsage`, and `PartUsage` graphical nodes.
 These tools leverage a selection dialog to either create a specific timeslice/snapshot graphical node or, if no selection is made, default to a timeslice/snapshot `OccurrenceUsage` graphical node.
+- https://github.com/eclipse-syson/syson/issues/2176[#2176] [metamodel] Implements `ownedConcern` and `referencedConcern` of `FramedConcernMembership`.
 
 == v2026.3.0
 

backend/metamodel/syson-sysml-metamodel/src/main/java/org/eclipse/syson/sysml/impl/FramedConcernMembershipImpl.java

@@ -1,15 +1,15 @@
 /*******************************************************************************
-* Copyright (c) 2023, 2025 Obeo.
-* This program and the accompanying materials
-* are made available under the terms of the Eclipse Public License v2.0
-* which accompanies this distribution, and is available at
-* https://www.eclipse.org/legal/epl-2.0/
-*
-* SPDX-License-Identifier: EPL-2.0
-*
-* Contributors:
-*     Obeo - initial API and implementation
-*******************************************************************************/
+ * Copyright (c) 2023, 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
 package org.eclipse.syson.sysml.impl;
 
 import org.eclipse.emf.ecore.EClass;
@@ -67,13 +67,14 @@ public ConcernUsage getOwnedConcern() {
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
-     * @generated
+     * @generated NOT
      */
     public ConcernUsage basicGetOwnedConcern() {
-        // TODO: implement this method to return the 'Owned Concern' reference
-        // -> do not perform proxy resolution
-        // Ensure that you remove @generated or mark it @generated NOT
-        return null;
+        return this.getOwnedRelatedElement().stream()
+                .filter(ConcernUsage.class::isInstance)
+                .map(ConcernUsage.class::cast)
+                .findFirst()
+                .orElse(null);
     }
 
     /**
@@ -93,9 +94,10 @@ public ConcernUsage getReferencedConcern() {
      * @generated
      */
     public ConcernUsage basicGetReferencedConcern() {
-        // TODO: implement this method to return the 'Referenced Concern' reference
-        // -> do not perform proxy resolution
-        // Ensure that you remove @generated or mark it @generated NOT
+        var referencedConstraint = super.getReferencedConstraint();
+        if (referencedConstraint instanceof ConcernUsage referencedConcern) {
+            return referencedConcern;
+        }
         return null;
     }
 

backend/metamodel/syson-sysml-metamodel/src/main/java/org/eclipse/syson/sysml/impl/RequirementConstraintMembershipImpl.java

@@ -1,5 +1,5 @@
-/**
- * Copyright (c) 2023, 2025 Obeo.
+/*******************************************************************************
+ * Copyright (c) 2023, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -9,9 +9,11 @@
  *
  * Contributors:
  *     Obeo - initial API and implementation
- */
+ *******************************************************************************/
 package org.eclipse.syson.sysml.impl;
 
+import java.util.Optional;
+
 import org.eclipse.emf.common.notify.Notification;
 import org.eclipse.emf.ecore.EClass;
 import org.eclipse.emf.ecore.InternalEObject;
@@ -140,13 +142,16 @@ public ConstraintUsage getReferencedConstraint() {
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
-     * @generated
+     * @generated NOT
      */
     public ConstraintUsage basicGetReferencedConstraint() {
-        // TODO: implement this method to return the 'Referenced Constraint' reference
-        // -> do not perform proxy resolution
-        // Ensure that you remove @generated or mark it @generated NOT
-        return null;
+        var ownedConstraint = this.getOwnedConstraint();
+        return Optional.ofNullable(ownedConstraint)
+                .map(ConstraintUsage::referencedFeatureTarget)
+                .filter(ConstraintUsage.class::isInstance)
+                .map(ConstraintUsage.class::cast)
+                .or(() -> Optional.ofNullable(ownedConstraint))
+                .orElse(null);
     }
 
     /**

backend/metamodel/syson-sysml-metamodel/src/test/java/org/eclipse/syson/sysml/impl/ConstraintUsageImplTest.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2025 Obeo.
+ * Copyright (c) 2025, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -12,6 +12,7 @@
  *******************************************************************************/
 package org.eclipse.syson.sysml.impl;
 
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import org.eclipse.syson.sysml.ConstraintUsage;
@@ -47,6 +48,7 @@ public void getNames() {
 
         reqMembership.getOwnedRelatedElement().add(constraint);
         this.builder.addReferenceSubsetting(constraint, superConstraint);
+        assertThat(reqMembership.getReferencedConstraint()).isEqualTo(superConstraint);
 
         assertEquals("SuperConstraint", constraint.getName());
         assertEquals("SuperConstraint", constraint.effectiveName());

backend/metamodel/syson-sysml-metamodel/src/test/java/org/eclipse/syson/sysml/impl/FramedConcernMembershipImplTest.java

@@ -0,0 +1,79 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.syson.sysml.impl;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.eclipse.syson.sysml.SysmlFactory;
+import org.eclipse.syson.sysml.util.ModelBuilder;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Test class for {@link FramedConcernMembershipImpl}.
+ *
+ * @author gcoutable
+ */
+public class FramedConcernMembershipImplTest {
+
+    private ModelBuilder builder;
+
+    @BeforeEach
+    public void setUp() {
+        this.builder = new ModelBuilder();
+    }
+
+    @Test
+    public void checkBasicGetOwnedConcern() {
+        var framedConcernMembership = SysmlFactory.eINSTANCE.createFramedConcernMembership();
+
+        var requirementUsage = SysmlFactory.eINSTANCE.createRequirementUsage();
+        requirementUsage.setDeclaredName("requirement1");
+        framedConcernMembership.getOwnedRelatedElement().add(requirementUsage);
+        assertThat(framedConcernMembership.getOwnedConcern()).isNull();
+
+        var anotherFramedConcernMembership = SysmlFactory.eINSTANCE.createFramedConcernMembership();
+
+        var concernUsage = SysmlFactory.eINSTANCE.createConcernUsage();
+        concernUsage.setDeclaredName("concern1");
+        anotherFramedConcernMembership.getOwnedRelatedElement().add(concernUsage);
+        assertThat(anotherFramedConcernMembership.getOwnedConcern()).isEqualTo(concernUsage);
+
+        var referencedConcernUsage = SysmlFactory.eINSTANCE.createConcernUsage();
+        referencedConcernUsage.setDeclaredName("concern2");
+        this.builder.addReferenceSubsetting(concernUsage, referencedConcernUsage);
+        assertThat(anotherFramedConcernMembership.getOwnedConcern()).isEqualTo(concernUsage);
+    }
+
+    @Test
+    public void checkBasicGetReferencedConstraint() {
+        var framedConcernMembership = SysmlFactory.eINSTANCE.createFramedConcernMembership();
+
+        var requirementUsage = SysmlFactory.eINSTANCE.createRequirementUsage();
+        requirementUsage.setDeclaredName("requirement1");
+        framedConcernMembership.getOwnedRelatedElement().add(requirementUsage);
+        assertThat(framedConcernMembership.getReferencedConstraint()).isNull();
+
+        var anotherFramedConcernMembership = SysmlFactory.eINSTANCE.createFramedConcernMembership();
+
+        var concernUsage = SysmlFactory.eINSTANCE.createConcernUsage();
+        concernUsage.setDeclaredName("concern1");
+        anotherFramedConcernMembership.getOwnedRelatedElement().add(concernUsage);
+        assertThat(anotherFramedConcernMembership.getReferencedConcern()).isEqualTo(concernUsage);
+
+        var referencedConcernUsage = SysmlFactory.eINSTANCE.createConcernUsage();
+        referencedConcernUsage.setDeclaredName("concern2");
+        this.builder.addReferenceSubsetting(concernUsage, referencedConcernUsage);
+        assertThat(anotherFramedConcernMembership.getReferencedConcern()).isEqualTo(referencedConcernUsage);
+    }
+}