[1398] Fix exposed Element update while d'n'd Element on General View

CHANGELOG.adoc

@@ -23,6 +23,7 @@
 === Bug fixes
 
 - https://github.com/eclipse-syson/syson/issues/893[#893] [explorer] Fix _Expand All_ tool in SysON _Explorer_ view
+- https://github.com/eclipse-syson/syson/issues/1398[#1398] [explorer] Fix an issue where a d'n'd of an `Element` in a diagram exposed the `Element` twice in the `ViewUsage` associated to the diagram.
 
 === Improvements
 

backend/application/syson-application/src/test/java/org/eclipse/syson/application/controllers/diagrams/general/view/GVDropFromExplorerTests.java

@@ -51,6 +51,7 @@
 import org.eclipse.syson.sysml.Element;
 import org.eclipse.syson.sysml.Package;
 import org.eclipse.syson.sysml.SysmlPackage;
+import org.eclipse.syson.sysml.ViewUsage;
 import org.eclipse.syson.util.IDescriptionNameGenerator;
 import org.eclipse.syson.util.SysONRepresentationDescriptionIdentifiers;
 import org.junit.jupiter.api.AfterEach;
@@ -136,7 +137,8 @@ public void tearDown() {
         }
     }
 
-    @Sql(scripts = { GeneralViewAddExistingElementsTestProjectData.SCRIPT_PATH }, executionPhase = Sql.ExecutionPhase.BEFORE_TEST_METHOD)
+    @Sql(scripts = { GeneralViewAddExistingElementsTestProjectData.SCRIPT_PATH }, executionPhase = Sql.ExecutionPhase.BEFORE_TEST_METHOD,
+            config = @SqlConfig(transactionMode = SqlConfig.TransactionMode.ISOLATED))
     @Sql(scripts = { "/scripts/cleanup.sql" }, executionPhase = Sql.ExecutionPhase.AFTER_TEST_METHOD, config = @SqlConfig(transactionMode = SqlConfig.TransactionMode.ISOLATED))
     @Test
     public void dropFromExplorerOnEmptyDiagram() {
@@ -156,9 +158,7 @@ public void dropFromExplorerOnEmptyDiagram() {
             String emptyDiagramNodeDescriptionId = this.diagramDescriptionIdProvider.getNodeDescriptionId(GeneralViewEmptyDiagramNodeDescriptionProvider.NAME);
             // Ensure the existing node is the "empty diagram" one.
             assertThat(emptyDiagramNode).hasDescriptionId(emptyDiagramNodeDescriptionId);
-            this.dropFromExplorerTester.dropFromExplorerOnDiagram(GeneralViewAddExistingElementsTestProjectData.EDITING_CONTEXT_ID,
-                    this.diagram,
-                    semanticElementId.get());
+            this.dropFromExplorerTester.dropFromExplorerOnDiagram(GeneralViewAddExistingElementsTestProjectData.EDITING_CONTEXT_ID, this.diagram, semanticElementId.get());
         });
 
         Consumer<DiagramRefreshedEventPayload> updatedDiagramConsumer = payload -> Optional.of(payload)
@@ -177,9 +177,24 @@ public void dropFromExplorerOnEmptyDiagram() {
                 }, () -> fail("Missing diagram"));
 
         this.verifier.consumeNextWith(updatedDiagramConsumer);
+
+        Runnable exposedElementsChecker = this.semanticRunnableFactory.createRunnable(GeneralViewAddExistingElementsTestProjectData.EDITING_CONTEXT_ID,
+                (editingContext, executeEditingContextFunctionInput) -> {
+                    ViewUsage generalViewViewUsage = this.objectSearchService.getObject(editingContext, GeneralViewAddExistingElementsTestProjectData.SemanticIds.GENERAL_VIEW_VIEW_USAGE_ID)
+                            .filter(ViewUsage.class::isInstance)
+                            .map(ViewUsage.class::cast)
+                            .orElse(null);
+                    assertThat(generalViewViewUsage).isNotNull();
+                    assertThat(generalViewViewUsage.getExposedElement()).hasSize(1);
+                    return new ExecuteEditingContextFunctionSuccessPayload(executeEditingContextFunctionInput.id(), true);
+                });
+
+        this.verifier.then(exposedElementsChecker);
+
     }
 
-    @Sql(scripts = { GeneralViewAddExistingElementsTestProjectData.SCRIPT_PATH }, executionPhase = Sql.ExecutionPhase.BEFORE_TEST_METHOD)
+    @Sql(scripts = { GeneralViewAddExistingElementsTestProjectData.SCRIPT_PATH }, executionPhase = Sql.ExecutionPhase.BEFORE_TEST_METHOD,
+            config = @SqlConfig(transactionMode = SqlConfig.TransactionMode.ISOLATED))
     @Sql(scripts = { "/scripts/cleanup.sql" }, executionPhase = Sql.ExecutionPhase.AFTER_TEST_METHOD, config = @SqlConfig(transactionMode = SqlConfig.TransactionMode.ISOLATED))
     @Test
     public void dropFromExplorerOnEmptyDiagramNode() {
@@ -199,10 +214,7 @@ public void dropFromExplorerOnEmptyDiagramNode() {
             String emptyDiagramNodeDescriptionId = this.diagramDescriptionIdProvider.getNodeDescriptionId(GeneralViewEmptyDiagramNodeDescriptionProvider.NAME);
             // Ensure the existing node is the "empty diagram" one.
             assertThat(emptyDiagramNode).hasDescriptionId(emptyDiagramNodeDescriptionId);
-            this.dropFromExplorerTester.dropFromExplorer(GeneralViewAddExistingElementsTestProjectData.EDITING_CONTEXT_ID,
-                    this.diagram,
-                    emptyDiagramNode.getId(),
-                    semanticElementId.get());
+            this.dropFromExplorerTester.dropFromExplorer(GeneralViewAddExistingElementsTestProjectData.EDITING_CONTEXT_ID, this.diagram, emptyDiagramNode.getId(), semanticElementId.get());
         });
 
         Consumer<DiagramRefreshedEventPayload> updatedDiagramConsumer = payload -> Optional.of(payload)
@@ -224,8 +236,7 @@ public void dropFromExplorerOnEmptyDiagramNode() {
     }
 
     private String getSemanticElementWithTargetObjectLabel(IEditingContext editingContext, String targetObjectLabel) {
-        Object semanticRootObject = this.objectSearchService.getObject(editingContext,
-                GeneralViewAddExistingElementsTestProjectData.SemanticIds.PACKAGE_1_ID).orElse(null);
+        Object semanticRootObject = this.objectSearchService.getObject(editingContext, GeneralViewAddExistingElementsTestProjectData.SemanticIds.PACKAGE_1_ID).orElse(null);
         assertThat(semanticRootObject).isInstanceOf(Package.class);
         Package rootPackage = (Package) semanticRootObject;
         Optional<Element> optPartUsage = rootPackage.getOwnedMember().stream().filter(m -> Objects.equals(m.getName(), targetObjectLabel)).findFirst();

backend/application/syson-application/src/test/java/org/eclipse/syson/application/data/GeneralViewAddExistingElementsTestProjectData.java

@@ -39,6 +39,8 @@ public static final class SemanticIds {
 
         public static final String PACKAGE_1_ID = "8d4123ac-3ac5-412d-90f2-49282b923003";
 
+        public static final String GENERAL_VIEW_VIEW_USAGE_ID = "b67872fa-5900-48d3-88f0-e6ced193c8ec";
+
         public static final String SUCCESSION_START_ACTION_2_IDS = "18d6f2fc-2182-4217-8da2-bf68c36ffa41";
     }
 

backend/application/syson-application/src/test/java/org/eclipse/syson/tree/explorer/view/handlers/DropTreeItemHandlerTest.java

@@ -80,8 +80,9 @@ public void beforeEach() {
         this.givenInitialServerState.initialize();
     }
 
-    @DisplayName("Given the simple project, when drag an dropping a part definition on a package, then the part definition should be moved under the Package.")
-    @Sql(scripts = { SimpleProjectElementsTestProjectData.SCRIPT_PATH }, executionPhase = Sql.ExecutionPhase.BEFORE_TEST_METHOD)
+    @DisplayName("GIVEN a SySML project, WHEN drag an dropping a PartDefinition on a Package, THEN the PartDefinition should be moved under the Package.")
+    @Sql(scripts = { SimpleProjectElementsTestProjectData.SCRIPT_PATH }, executionPhase = Sql.ExecutionPhase.BEFORE_TEST_METHOD,
+            config = @SqlConfig(transactionMode = SqlConfig.TransactionMode.ISOLATED))
     @Sql(scripts = { "/scripts/cleanup.sql" }, executionPhase = Sql.ExecutionPhase.AFTER_TEST_METHOD, config = @SqlConfig(transactionMode = SqlConfig.TransactionMode.ISOLATED))
     @Test
     public void checkDnDPartDefinitionOnPackage() {
@@ -153,8 +154,9 @@ public void checkDnDPartDefinitionOnPackage() {
 
     }
 
-    @DisplayName("Given a SySML project, when drag an dropping an element into one of its descendant, then the selected element should not be moved")
-    @Sql(scripts = { SimpleProjectElementsTestProjectData.SCRIPT_PATH }, executionPhase = Sql.ExecutionPhase.BEFORE_TEST_METHOD)
+    @DisplayName("GIVEN a SySML project, WHEN drag an dropping an Element into one of its descendant, THEN the selected Element should not be moved")
+    @Sql(scripts = { SimpleProjectElementsTestProjectData.SCRIPT_PATH }, executionPhase = Sql.ExecutionPhase.BEFORE_TEST_METHOD,
+            config = @SqlConfig(transactionMode = SqlConfig.TransactionMode.ISOLATED))
     @Sql(scripts = { "/scripts/cleanup.sql" }, executionPhase = Sql.ExecutionPhase.AFTER_TEST_METHOD, config = @SqlConfig(transactionMode = SqlConfig.TransactionMode.ISOLATED))
     @Test
     public void checkForbiddenDropOnDescendant() {
@@ -211,5 +213,4 @@ public void checkForbiddenDropOnDescendant() {
                 .verify(Duration.ofSeconds(10));
 
     }
-
 }

backend/views/syson-diagram-common-view/src/main/java/org/eclipse/syson/diagram/common/view/services/ViewToolService.java

@@ -392,7 +392,6 @@ public Element dropElementFromExplorer(Element element, IEditingContext editingC
                 }
                 if (optElementToDrop.isPresent()) {
                     this.dropElementFromExplorerInTarget(optElementToDrop.get(), targetElement, editingContext, diagramContext, selectedNode, convertedNodes);
-                    this.updateExposedElements(targetElement, optElementToDrop.get(), editingContext, diagramContext);
                 }
             }
         }

doc/content/modules/user-manual/pages/release-notes/2025.8.0.adoc

@@ -14,7 +14,8 @@
 
 == Bug fixes
 
-- Fix an issue that made the _Expand All_ tool not work consistently in SysON _Explorer_ view
+- Fix an issue that made the _Expand All_ tool not work consistently in SysON _Explorer_ view.
+- Fix an issue where a d'n'd of an `Element` from the _Explorer_ view to a diagram exposed the `Element` twice in the `ViewUsage` associated to the diagram.
 
 == Improvements