Merge pull request #557 from Systems-Modeling/ST6RI-762

ST6RI-762: %viz command causes ConcurrentModificationException

org.omg.sysml.plantuml/src/org/omg/sysml/plantuml/InheritKey.java

@@ -1,6 +1,6 @@
 /*****************************************************************************
  * SysML 2 Pilot Implementation, PlantUML Visualization
- * Copyright (c) 2022-2023 Mgnite Inc.
+ * Copyright (c) 2022-2024 Mgnite 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

org.omg.sysml.plantuml/src/org/omg/sysml/plantuml/SysML2PlantUMLText.java

@@ -1,6 +1,6 @@
 /*****************************************************************************
  * SysML 2 Pilot Implementation, PlantUML Visualization
- * Copyright (c) 2020-2023 Mgnite Inc.
+ * Copyright (c) 2020-2024 Mgnite 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

org.omg.sysml.plantuml/src/org/omg/sysml/plantuml/VBehavior.java

@@ -128,7 +128,7 @@ public String caseSuccession(Succession su) {
     private boolean resolveReference(Feature f, ActionUsage au, boolean send) {
         if (!(f instanceof ReferenceUsage)) return false;
         boolean flag = true;
-        for (Membership m: f.getOwnedMembership()) {
+        for (Membership m: toOwnedMembershipArray(f)) {
             if (m instanceof FeatureValue) {
                 FeatureValue fv = (FeatureValue) m;
                 Expression e = fv.getValue();
@@ -235,7 +235,7 @@ private String convertToDescription(TransitionUsage tu) {
         String guardString = null;
         String effectString = null;
 
-        for (FeatureMembership fm: tu.getOwnedFeatureMembership()) {
+        for (FeatureMembership fm: toOwnedFeatureMembershipArray(tu)) {
             if (!(fm instanceof TransitionFeatureMembership)) continue;
             TransitionFeatureMembership tfm = (TransitionFeatureMembership) fm;
             Step s = tfm.getTransitionFeature();

org.omg.sysml.plantuml/src/org/omg/sysml/plantuml/VCompartment.java

@@ -1,6 +1,6 @@
 /*****************************************************************************
  * SysML 2 Pilot Implementation, PlantUML Visualization
- * Copyright (c) 2020-2023 Mgnite Inc.
+ * Copyright (c) 2020-2024 Mgnite Inc.
  * Copyright (c) 2021-2023 Model Driven Solutions, Inc.
  *    
  * This program is free software: you can redistribute it and/or modify
@@ -203,7 +203,7 @@ private class CompTree {
         private final CompartmentEntry parent;
 
         public void process(Feature f) {
-            for (Membership m: f.getOwnedMembership()) {
+            for (Membership m: toOwnedMembershipArray(f)) {
                 Element e = m.getMemberElement();
                 if (e instanceof Expression) {
                     // Do not show it

org.omg.sysml.plantuml/src/org/omg/sysml/plantuml/VDefault.java

@@ -1,6 +1,6 @@
 /*****************************************************************************
  * SysML 2 Pilot Implementation, PlantUML Visualization
- * Copyright (c) 2020-2023 Mgnite Inc.
+ * Copyright (c) 2020-2024 Mgnite Inc.
  * Copyright (c) 2020-2023 Model Driven Solutions, Inc.
  *    
  * This program is free software: you can redistribute it and/or modify
@@ -263,7 +263,7 @@ public String caseDependency(Dependency dep) {
     }
 
     protected static boolean isEmptyFeature(Feature f) {
-        for (FeatureMembership fm: f.getOwnedFeatureMembership()) {
+        for (FeatureMembership fm: toOwnedFeatureMembershipArray(f)) {
             if (fm.getOwnedMemberFeature() instanceof BindingConnector) continue;
             return false;
         }
@@ -272,7 +272,7 @@ protected static boolean isEmptyFeature(Feature f) {
 
     protected Relationship findBindingLikeRel(Feature f) {
         Relationship ret = null;
-        for (Relationship rel : f.getOwnedRelationship()) {
+        for (Relationship rel : toOwnedRelationshipArray(f)) {
             if (rel instanceof FeatureValue) {
                 // first priority
                 return rel;

org.omg.sysml.plantuml/src/org/omg/sysml/plantuml/VPath.java

@@ -1,6 +1,6 @@
 /*****************************************************************************
  * SysML 2 Pilot Implementation, PlantUML Visualization
- * Copyright (c) 2020-2023 Mgnite Inc.
+ * Copyright (c) 2020-2024 Mgnite Inc.
  * Copyright (c) 2022 Model Driven Solutions, Inc.
  *    
  * This program is free software: you can redistribute it and/or modify
@@ -306,7 +306,7 @@ private InheritKey makeInheritKeyOfOwner(Feature f) {
       }
     */
     private static Feature getIOTarget(ItemFlowEnd ife) {
-        for (FeatureMembership fm: ife.getOwnedFeatureMembership()) {
+        for (FeatureMembership fm: toOwnedFeatureMembershipArray(ife)) {
             Feature f = fm.getOwnedMemberFeature();
             for (Redefinition rd: f.getOwnedRedefinition()) {
                 return rd.getRedefinedFeature();

org.omg.sysml.plantuml/src/org/omg/sysml/plantuml/VStructure.java

@@ -1,6 +1,6 @@
 /*****************************************************************************
  * SysML 2 Pilot Implementation, PlantUML Visualization
- * Copyright (c) 2020-2023 Mgnite Inc.
+ * Copyright (c) 2020-2024 Mgnite Inc.
  * Copyright (c) 2021-2023 Model Driven Solutions, Inc.
  *    
  * This program is free software: you can redistribute it and/or modify
@@ -140,7 +140,7 @@ protected boolean appendFeatureValue(FeatureValue fv) {
 
     private boolean addFeatureMembershipText(Feature f) {
         boolean flag = false;
-        for (Membership m: f.getOwnedMembership()) {
+        for (Membership m: toOwnedMembershipArray(f)) {
             if (m instanceof FeatureValue) {
                 return appendFeatureValue((FeatureValue) m);
             } else if (m instanceof ResultExpressionMembership) {

org.omg.sysml.plantuml/src/org/omg/sysml/plantuml/VTraverser.java

@@ -1,6 +1,6 @@
 /*****************************************************************************
  * SysML 2 Pilot Implementation, PlantUML Visualization
- * Copyright (c) 2020-2023 Mgnite Inc.
+ * Copyright (c) 2020-2024 Mgnite Inc.
  * Copyright (c) 2022 Model Driven Solutions, Inc.
  *    
  * This program is free software: you can redistribute it and/or modify
@@ -84,15 +84,15 @@ private static boolean isModelLibrary(Element e) {
     }
 
     private void traverseInternal(Namespace n, Set<Element> covered) {
-        for (Relationship r: n.getOwnedRelationship()) {
+        for (Relationship r: toOwnedRelationshipArray(n)) {
             if (r instanceof Membership) {
                 Membership ms = (Membership) r;
                 setInherited(false);
                 Element e = ms.getMemberElement();
                 markRedefining(e, covered);
                 this.currentMembership = ms;
                 visit(ms);
-                for (Relationship r2: ms.getOwnedRelationship()) {
+                for (Relationship r2: toOwnedRelationshipArray(ms)) {
                     setInherited(false);
                     visit(r2);
                 }

org.omg.sysml.plantuml/src/org/omg/sysml/plantuml/Visitor.java

@@ -1,6 +1,6 @@
 /*****************************************************************************
  * SysML 2 Pilot Implementation, PlantUML Visualization
- * Copyright (c) 2020-2023 Mgnite Inc.
+ * Copyright (c) 2020-2024 Mgnite Inc.
  * Copyright (c) 2023 Model Driven Solutions, Inc.
  *    
  * This program is free software: you can redistribute it and/or modify
@@ -36,13 +36,15 @@
 import org.omg.sysml.lang.sysml.Element;
 import org.omg.sysml.lang.sysml.Feature;
 import org.omg.sysml.lang.sysml.FeatureChaining;
+import org.omg.sysml.lang.sysml.FeatureMembership;
 import org.omg.sysml.lang.sysml.FeatureTyping;
 import org.omg.sysml.lang.sysml.Membership;
 import org.omg.sysml.lang.sysml.Multiplicity;
 import org.omg.sysml.lang.sysml.MultiplicityRange;
 import org.omg.sysml.lang.sysml.Namespace;
 import org.omg.sysml.lang.sysml.Redefinition;
 import org.omg.sysml.lang.sysml.ReferenceSubsetting;
+import org.omg.sysml.lang.sysml.Relationship;
 import org.omg.sysml.lang.sysml.Subsetting;
 import org.omg.sysml.lang.sysml.Type;
 import org.omg.sysml.lang.sysml.util.SysMLSwitch;
@@ -748,4 +750,25 @@ public String visit(Element e) {
         s2p.countVisits();
         return doSwitch(e);
     }
+
+    // Accessing relationships may cause ConcurrentModificationException over iterators
+    // because it may trigger "on-demand" transformation.  So we introduce utility methods
+    // to copy them into an array.
+    public static Relationship[] toOwnedRelationshipArray(Element e) {
+        List<Relationship> rels = e.getOwnedRelationship();
+        Relationship[] array = new Relationship[rels.size()];
+        return rels.toArray(array);
+    }
+
+    public static Membership[] toOwnedMembershipArray(Namespace ns) {
+        List<Membership> ms = ns.getOwnedMembership();
+        Membership[] array = new Membership[ms.size()];
+        return ms.toArray(array);
+    }
+
+    public static FeatureMembership[] toOwnedFeatureMembershipArray(Feature f) {
+        List<FeatureMembership> fms = f.getOwnedFeatureMembership();
+        FeatureMembership[] array = new FeatureMembership[fms.size()];
+        return fms.toArray(array);
+    }
 }