[4652] Add support for loading editing contexts with dependencies

Bug: eclipse-sirius#4652
Signed-off-by: Gwendal Daniel <[email protected]>

CHANGELOG.adoc

@@ -57,6 +57,10 @@ See the new interface `org.eclipse.sirius.components.emf.services.api.IRepresent
 - https://github.com/eclipse-sirius/sirius-web/issues/4597[#4597] [sirius-web] Add a command to publish libraries from studios
 The command creates a library for each _RepresentationDescription_ and _Domain_ in the studio, and creates the dependencies between them.
 A _shared components_ library can be created in the process to store elements that are needed by other libraries but are not stored in libraries themselves.
+- https://github.com/eclipse-sirius/sirius-web/issues/4652[#4652] [sirius-web] Add support for loading projects with dependencies
+Semantic data can have dependencies between them, which are transitively loaded when an editing context is created.
+A new predicate `IReadOnlyObjectPredicate` has been added with a default implementation that returns `true` if the object belongs to semantic data loaded as a dependency.
+This predicate is used in Sirius Web's explorer to prevent users from deleting or renaming elements from dependencies.
 
 
 === Improvements

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/editingcontext/services/EditingContextDependencyLoader.java

@@ -0,0 +1,73 @@
+/*******************************************************************************
+ * Copyright (c) 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
+ *******************************************************************************/
+package org.eclipse.sirius.web.application.editingcontext.services;
+
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+
+import org.eclipse.emf.common.util.URI;
+import org.eclipse.emf.ecore.resource.Resource;
+import org.eclipse.sirius.components.core.api.IEditingContext;
+import org.eclipse.sirius.web.application.UUIDParser;
+import org.eclipse.sirius.web.application.editingcontext.EditingContext;
+import org.eclipse.sirius.web.application.editingcontext.services.api.IEditingContextDependencyLoader;
+import org.eclipse.sirius.web.application.editingcontext.services.api.IEditingContextMigrationParticipantPredicate;
+import org.eclipse.sirius.web.application.editingcontext.services.api.IResourceLoader;
+import org.eclipse.sirius.web.domain.boundedcontexts.semanticdata.SemanticData;
+import org.eclipse.sirius.web.domain.boundedcontexts.semanticdata.services.api.ISemanticDataSearchService;
+import org.springframework.stereotype.Service;
+
+/**
+ * Loads dependencies into the editing context.
+ *
+ * @author gdaniel
+ */
+@Service
+public class EditingContextDependencyLoader implements IEditingContextDependencyLoader {
+
+    private final ISemanticDataSearchService semanticDataSearchService;
+
+    private final IResourceLoader resourceLoader;
+
+    private final List<IEditingContextMigrationParticipantPredicate> migrationParticipantPredicates;
+
+    public EditingContextDependencyLoader(ISemanticDataSearchService semanticDataSearchService, IResourceLoader resourceLoader, List<IEditingContextMigrationParticipantPredicate> migrationParticipantPredicates) {
+        this.semanticDataSearchService = Objects.requireNonNull(semanticDataSearchService);
+        this.resourceLoader = Objects.requireNonNull(resourceLoader);
+        this.migrationParticipantPredicates = Objects.requireNonNull(migrationParticipantPredicates);
+    }
+
+    @Override
+    public void loadDependencies(IEditingContext editingContext) {
+        if (editingContext instanceof EditingContext siriusWebEditingContext) {
+            Set<SemanticData> dependenciesSemanticData = new UUIDParser().parse(siriusWebEditingContext.getId())
+                    .map(this.semanticDataSearchService::findAllTransitiveSemanticDataById)
+                    .orElse(Set.of());
+            for (SemanticData semanticData : dependenciesSemanticData) {
+                semanticData.getDocuments().forEach(document -> {
+                    URI dependencyResourceURI = URI.createURI(DEPENDENCY_SCHEME + ":///" + document.getId().toString());
+                    if (siriusWebEditingContext.getDomain().getResourceSet().getResource(dependencyResourceURI, false) == null) {
+                        Optional<Resource> resource = this.resourceLoader.toResource(siriusWebEditingContext.getDomain().getResourceSet(), document.getId().toString(), document.getName(), document.getContent(),
+                                this.migrationParticipantPredicates.stream().anyMatch(predicate -> predicate.test(editingContext.getId())));
+                        resource.ifPresent(r -> {
+                            siriusWebEditingContext.getDomain().getResourceSet().getURIConverter().getURIMap().put(r.getURI(), dependencyResourceURI);
+                            r.setURI(dependencyResourceURI);
+                        });
+                    }
+                });
+            }
+        }
+    }
+}

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/editingcontext/services/EditingContextLoader.java

@@ -21,6 +21,7 @@
 import org.eclipse.sirius.components.emf.services.EditingContextCrossReferenceAdapter;
 import org.eclipse.sirius.emfjson.resource.JsonResource;
 import org.eclipse.sirius.web.application.editingcontext.EditingContext;
+import org.eclipse.sirius.web.application.editingcontext.services.api.IEditingContextDependencyLoader;
 import org.eclipse.sirius.web.application.editingcontext.services.api.IEditingContextLoader;
 import org.eclipse.sirius.web.application.editingcontext.services.api.IEditingContextMigrationParticipantPredicate;
 import org.eclipse.sirius.web.application.editingcontext.services.api.IResourceLoader;
@@ -41,22 +42,27 @@ public class EditingContextLoader implements IEditingContextLoader {
 
     private final IResourceLoader resourceLoader;
 
+    private final IEditingContextDependencyLoader editingContextLibraryLoader;
+
     private final List<IEditingContextRepresentationDescriptionProvider> representationDescriptionProviders;
 
     private final List<IEditingContextProcessor> editingContextProcessors;
 
     private final List<IEditingContextMigrationParticipantPredicate> migrationParticipantPredicates;
 
-    public EditingContextLoader(IResourceLoader resourceLoader, List<IEditingContextRepresentationDescriptionProvider> representationDescriptionProviders, List<IEditingContextProcessor> editingContextProcessors, List<IEditingContextMigrationParticipantPredicate> migrationParticipantPredicates) {
+    public EditingContextLoader(IResourceLoader resourceLoader, IEditingContextDependencyLoader editingContextLibraryLoader, List<IEditingContextRepresentationDescriptionProvider> representationDescriptionProviders, List<IEditingContextProcessor> editingContextProcessors, List<IEditingContextMigrationParticipantPredicate> migrationParticipantPredicates) {
         this.resourceLoader = Objects.requireNonNull(resourceLoader);
+        this.editingContextLibraryLoader = Objects.requireNonNull(editingContextLibraryLoader);
         this.representationDescriptionProviders = Objects.requireNonNull(representationDescriptionProviders);
         this.editingContextProcessors = Objects.requireNonNull(editingContextProcessors);
         this.migrationParticipantPredicates = Objects.requireNonNull(migrationParticipantPredicates);
     }
 
+    @Override
     public void load(EditingContext editingContext, SemanticData semanticData) {
         this.editingContextProcessors.forEach(processor -> processor.preProcess(editingContext));
 
+        this.editingContextLibraryLoader.loadDependencies(editingContext);
         this.loadSemanticData(editingContext, semanticData);
 
         this.representationDescriptionProviders.forEach(representationDescriptionProvider -> {

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/editingcontext/services/api/IEditingContextDependencyLoader.java

@@ -0,0 +1,28 @@
+/*******************************************************************************
+ * Copyright (c) 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
+ *******************************************************************************/
+package org.eclipse.sirius.web.application.editingcontext.services.api;
+
+import org.eclipse.sirius.components.core.api.IEditingContext;
+
+/**
+ * Loads dependencies into the editing context.
+ *
+ * @author gdaniel
+ */
+public interface IEditingContextDependencyLoader {
+
+    String DEPENDENCY_SCHEME = "dependency";
+
+    void loadDependencies(IEditingContext editingContext);
+
+}

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/object/services/ComposedReadOnlyObjectPredicate.java

@@ -0,0 +1,52 @@
+/*******************************************************************************
+ * Copyright (c) 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
+ *******************************************************************************/
+package org.eclipse.sirius.web.application.object.services;
+
+import java.util.List;
+import java.util.Objects;
+
+import org.eclipse.sirius.web.application.object.services.api.IDefaultReadOnlyObjectPredicate;
+import org.eclipse.sirius.web.application.object.services.api.IReadOnlyObjectPredicate;
+import org.eclipse.sirius.web.application.object.services.api.IReadOnlyObjectPredicateDelegate;
+import org.springframework.stereotype.Service;
+
+/**
+ * Implementation of {@link IReadOnlyObjectPredicate} which delegates to {@link IReadOnlyObjectPredicateDelegate} or fallback to
+ * {@link IDefaultReadOnlyObjectPredicate}.
+ *
+ * @author gdaniel
+ */
+@Service
+public class ComposedReadOnlyObjectPredicate implements IReadOnlyObjectPredicate {
+
+    private final List<IReadOnlyObjectPredicateDelegate> readOnlyObjectPredicateDelegate;
+
+    private final IDefaultReadOnlyObjectPredicate defaultReadOnlyObjectPredicate;
+
+    public ComposedReadOnlyObjectPredicate(List<IReadOnlyObjectPredicateDelegate> readOnlyObjectPredicateDelegate, IDefaultReadOnlyObjectPredicate defaultReadOnlyObjectPredicate) {
+        this.readOnlyObjectPredicateDelegate = Objects.requireNonNull(readOnlyObjectPredicateDelegate);
+        this.defaultReadOnlyObjectPredicate = Objects.requireNonNull(defaultReadOnlyObjectPredicate);
+    }
+
+    @Override
+    public boolean test(Object object) {
+        var optionalDelegate = this.readOnlyObjectPredicateDelegate.stream()
+                .filter(delegate -> delegate.canHandle(object))
+                .findFirst();
+        if (optionalDelegate.isPresent()) {
+            return optionalDelegate.get().test(object);
+        }
+        return this.defaultReadOnlyObjectPredicate.test(object);
+    }
+
+}

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/object/services/DefaultReadOnlyObjectPredicate.java

@@ -0,0 +1,48 @@
+/*******************************************************************************
+ * Copyright (c) 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
+ *******************************************************************************/
+package org.eclipse.sirius.web.application.object.services;
+
+import java.util.Objects;
+import java.util.Optional;
+
+import org.eclipse.emf.common.util.URI;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.ecore.resource.Resource;
+import org.eclipse.sirius.web.application.editingcontext.services.api.IEditingContextDependencyLoader;
+import org.eclipse.sirius.web.application.object.services.api.IDefaultReadOnlyObjectPredicate;
+import org.springframework.stereotype.Service;
+
+/**
+ * The default service used to test if an object is read-only.
+ *
+ * @author gdaniel
+ */
+@Service
+public class DefaultReadOnlyObjectPredicate implements IDefaultReadOnlyObjectPredicate {
+
+    @Override
+    public boolean test(Object object) {
+        boolean result = false;
+        if (object instanceof EObject eObject) {
+            result = Optional.ofNullable(eObject.eResource())
+                    .map(Resource::getURI)
+                    .map(URI::scheme)
+                    .filter(scheme -> Objects.equals(scheme, IEditingContextDependencyLoader.DEPENDENCY_SCHEME))
+                    .isPresent();
+        } else if (object instanceof Resource resource) {
+            result = Objects.equals(resource.getURI().scheme(), IEditingContextDependencyLoader.DEPENDENCY_SCHEME);
+        }
+        return result;
+    }
+
+}

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/object/services/api/IDefaultReadOnlyObjectPredicate.java

@@ -0,0 +1,24 @@
+/*******************************************************************************
+ * Copyright (c) 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
+ *******************************************************************************/
+package org.eclipse.sirius.web.application.object.services.api;
+
+import java.util.function.Predicate;
+
+/**
+ * The default service used to test if an object is read-only.
+ *
+ * @author gdaniel
+ */
+public interface IDefaultReadOnlyObjectPredicate extends Predicate<Object> {
+
+}

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/object/services/api/IReadOnlyObjectPredicate.java

@@ -0,0 +1,24 @@
+/*******************************************************************************
+ * Copyright (c) 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
+ *******************************************************************************/
+package org.eclipse.sirius.web.application.object.services.api;
+
+import java.util.function.Predicate;
+
+/**
+ * Used to test if an object is read-only.
+ *
+ * @author gdaniel
+ */
+public interface IReadOnlyObjectPredicate extends Predicate<Object> {
+
+}

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/object/services/api/IReadOnlyObjectPredicateDelegate.java

@@ -0,0 +1,26 @@
+/*******************************************************************************
+ * Copyright (c) 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
+ *******************************************************************************/
+package org.eclipse.sirius.web.application.object.services.api;
+
+import java.util.function.Predicate;
+
+/**
+ * Used to test if an object is read-only.
+ *
+ * @author gdaniel
+ */
+public interface IReadOnlyObjectPredicateDelegate extends Predicate<Object> {
+
+    boolean canHandle(Object object);
+
+}

packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/views/explorer/services/ExplorerServices.java

@@ -33,6 +33,7 @@
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.emf.services.api.IEMFEditingContext;
 import org.eclipse.sirius.web.application.UUIDParser;
+import org.eclipse.sirius.web.application.object.services.api.IReadOnlyObjectPredicate;
 import org.eclipse.sirius.web.application.views.explorer.services.api.IExplorerServices;
 import org.eclipse.sirius.web.domain.boundedcontexts.representationdata.RepresentationIconURL;
 import org.eclipse.sirius.web.domain.boundedcontexts.representationdata.RepresentationMetadata;
@@ -56,11 +57,14 @@ public class ExplorerServices implements IExplorerServices {
 
     private final IRepresentationMetadataSearchService representationMetadataSearchService;
 
-    public ExplorerServices(IObjectService objectService, IURLParser urlParser, List<IRepresentationImageProvider> representationImageProviders, IRepresentationMetadataSearchService representationMetadataSearchService) {
+    private final IReadOnlyObjectPredicate readOnlyObjectPredicate;
+
+    public ExplorerServices(IObjectService objectService, IURLParser urlParser, List<IRepresentationImageProvider> representationImageProviders, IRepresentationMetadataSearchService representationMetadataSearchService, IReadOnlyObjectPredicate readOnlyObjectPredicate) {
         this.objectService = Objects.requireNonNull(objectService);
         this.urlParser = Objects.requireNonNull(urlParser);
         this.representationImageProviders = Objects.requireNonNull(representationImageProviders);
         this.representationMetadataSearchService = Objects.requireNonNull(representationMetadataSearchService);
+        this.readOnlyObjectPredicate = Objects.requireNonNull(readOnlyObjectPredicate);
     }
 
     @Override
@@ -114,19 +118,21 @@ private String getResourceLabel(Resource resource) {
     @Override
     public boolean isEditable(Object self) {
         boolean editable = false;
-        if (self instanceof RepresentationMetadata) {
-            editable = true;
-        } else if (self instanceof Resource) {
-            editable = true;
-        } else if (self instanceof EObject) {
-            editable = this.objectService.isLabelEditable(self);
+        if (!this.readOnlyObjectPredicate.test(self)) {
+            if (self instanceof RepresentationMetadata) {
+                editable = true;
+            } else if (self instanceof Resource) {
+                editable = true;
+            } else if (self instanceof EObject) {
+                editable = this.objectService.isLabelEditable(self);
+            }
         }
         return editable;
     }
 
     @Override
     public boolean isDeletable(Object self) {
-        return true;
+        return !this.readOnlyObjectPredicate.test(self);
     }
 
     @Override