1 files changed, 61 insertions, 0 deletions
diff --git a/plugins/views/modelexplorer/org.eclipse.papyrus.views.modelexplorer/src/org/eclipse/papyrus/views/modelexplorer/queries/GetVisibleReferencesQuery.java b/plugins/views/modelexplorer/org.eclipse.papyrus.views.modelexplorer/src/org/eclipse/papyrus/views/modelexplorer/queries/GetVisibleReferencesQuery.java
new file mode 100644
index 00000000000..c6bae2725e8
--- /dev/null
+++ b/plugins/views/modelexplorer/org.eclipse.papyrus.views.modelexplorer/src/org/eclipse/papyrus/views/modelexplorer/queries/GetVisibleReferencesQuery.java
@@ -0,0 +1,61 @@
+/*****************************************************************************
+ * Copyright (c) 2016 CEA LIST and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   CEA LIST - Initial API and implementation
+ *
+ *****************************************************************************/
+
+package org.eclipse.papyrus.views.modelexplorer.queries;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.ecore.EReference;
+import org.eclipse.emf.ecore.EcorePackage;
+import org.eclipse.papyrus.emf.facet.efacet.core.IFacetManager;
+import org.eclipse.papyrus.emf.facet.efacet.core.exception.DerivedTypedElementException;
+import org.eclipse.papyrus.emf.facet.query.java.core.IJavaQuery2;
+import org.eclipse.papyrus.emf.facet.query.java.core.IParameterValueList2;
+
+/**
+ * @author Camille Letavernier
+ *
+ */
+public class GetVisibleReferencesQuery implements IJavaQuery2<EObject, List<EReference>> {
+
+	/**
+	 * @see org.eclipse.papyrus.emf.facet.query.java.core.IJavaQuery2#evaluate(org.eclipse.emf.ecore.EObject, org.eclipse.papyrus.emf.facet.query.java.core.IParameterValueList2, org.eclipse.papyrus.emf.facet.efacet.core.IFacetManager)
+	 *
+	 * @param source
+	 * @param parameterValues
+	 * @param facetManager
+	 * @return
+	 * @throws DerivedTypedElementException
+	 */
+	@Override
+	public List<EReference> evaluate(EObject source, IParameterValueList2 parameterValues, IFacetManager facetManager) throws DerivedTypedElementException {
+		return source.eClass().getEAllReferences().stream().filter(
+				ref -> ref != EcorePackage.Literals.EMODEL_ELEMENT__EANNOTATIONS && ref.isContainment() && !isEmpty(ref, source) //
+		).collect(Collectors.toList());
+	}
+
+	private boolean isEmpty(EReference reference, EObject source) {
+		Object value = source.eGet(reference);
+		if (value == null) {
+			return true;
+		}
+		if (value instanceof Collection) {
+			return ((Collection<?>) value).isEmpty();
+		}
+		return false;
+	}
+
+}