/******************************************************************************* * 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.browsing.ui.graph.impl; import java.util.ArrayList; import java.util.Collection; import java.util.HashSet; import java.util.Set; import org.simantics.browsing.ui.BuiltinKeys.ViewpointKey; import org.simantics.browsing.ui.NodeContext; import org.simantics.browsing.ui.PrimitiveQueryUpdater; import org.simantics.browsing.ui.common.property.IProperty; import org.simantics.browsing.ui.content.Viewpoint; import org.simantics.browsing.ui.content.ViewpointFactory; import org.simantics.db.ReadGraph; import org.simantics.db.Resource; import org.simantics.db.Statement; import org.simantics.db.common.ResourceArray; import org.simantics.db.exception.DatabaseException; import org.simantics.db.impl.RelationContextImpl; import org.simantics.layer0.Layer0; /** * A basic viewpoint which follows the Has Property relation to show properties * of resources. * *
* The viewpoint generates {@link ResourceArrayProperty} output for Value instances that contain array values. *
* * @see ArrayPropertyValueViewpointFactory viewpoint with IArrayProperty support */ public class PropertyViewpointFactory implements ViewpointFactory { @Override public Viewpoint create(PrimitiveQueryUpdater provider, final NodeContext context, ViewpointKey key) { return new LazyViewpoint(provider, context, key) { @Override public NodeContext[] children(ReadGraph graph) throws DatabaseException { Object in = getInput(Object.class); Resource input = null; if (in instanceof Resource) { input = (Resource) in; } else if (in instanceof ResourceArray) { ResourceArray ra = (ResourceArray) in; if (ra.isEmpty()) return NodeContext.NONE; input = ra.resources[0]; } else if (in instanceof Statement) { input = ((Statement) in).getObject(); } else { return NodeContext.NONE; } // // First see if this is a Value resource. // NodeContext[] valueChildren = GraphPropertyUtil.tryValueGetChildren(graph, input, new ResourcePropertyFactory(IProperty.Type.DIRECT, input)); // if (valueChildren != null) // return valueChildren; // If not, then go look for properties, either direct or asserted. Collection