/******************************************************************************* * Copyright (c) 2007, 2010 Association for Decentralized Information Management * in Industry THTH ry. * 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: * VTT Technical Research Centre of Finland - initial API and implementation *******************************************************************************/ package org.simantics.diagram.profile; import java.util.Collection; import java.util.HashSet; import java.util.Set; import org.simantics.db.ReadGraph; import org.simantics.db.RequestProcessor; import org.simantics.db.Resource; import org.simantics.db.common.primitiverequest.OrderedSet; import org.simantics.db.common.procedure.wrapper.SetListenerToSingleSetListener; import org.simantics.db.common.request.BinaryRead; import org.simantics.db.exception.DatabaseException; import org.simantics.db.procedure.SetListener; import org.simantics.diagram.stubs.DiagramResource; import org.simantics.scenegraph.profile.Group; /** * @author Tuukka Lehtonen */ public abstract class DiagramElementGroup implements Group { protected DiagramResource DIA; public DiagramElementGroup(ReadGraph graph) { this.DIA = DiagramResource.getInstance(graph); } @Override public void trackItems(RequestProcessor processor, final Resource runtimeDiagram, final SetListener listener) { processor.asyncRequest(new BinaryRead, Resource, Collection>(getClass(), runtimeDiagram) { @Override public Set perform(ReadGraph graph) throws DatabaseException { HashSet result = new HashSet(); Resource realDiagram = graph.getPossibleObject(parameter2, DIA.RuntimeDiagram_HasConfiguration); if (realDiagram == null) return result; Collection elements = graph.syncRequest(new OrderedSet(realDiagram)); for (Resource element : elements) { if (test(graph, element)) { result.add(element); } } return result; } }, new SetListenerToSingleSetListener(listener)); } protected abstract boolean test(ReadGraph graph, Resource element) throws DatabaseException; }