1 /*******************************************************************************
\r
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
\r
3 * in Industry THTH ry.
\r
4 * All rights reserved. This program and the accompanying materials
\r
5 * are made available under the terms of the Eclipse Public License v1.0
\r
6 * which accompanies this distribution, and is available at
\r
7 * http://www.eclipse.org/legal/epl-v10.html
\r
10 * VTT Technical Research Centre of Finland - initial API and implementation
\r
11 *******************************************************************************/
\r
12 package org.simantics.browsing.ui.graph.impl;
\r
14 import java.util.Collections;
\r
15 import java.util.Set;
\r
17 import org.simantics.browsing.ui.BuiltinKeys;
\r
18 import org.simantics.browsing.ui.NodeContext;
\r
19 import org.simantics.browsing.ui.NodeContext.PrimitiveQueryKey;
\r
20 import org.simantics.db.ReadGraph;
\r
21 import org.simantics.db.Resource;
\r
22 import org.simantics.db.common.ResourceArray;
\r
23 import org.simantics.db.exception.DatabaseException;
\r
24 import org.simantics.utils.Container;
\r
26 public class InheritsQueryProcessor extends LazyGraphQueryProcessor<Set<Resource>> {
\r
29 public String toString() {
\r
30 return "InheritsProcessor";
\r
34 public Object getIdentifier() {
\r
35 return CommonKeys.INHERITS;
\r
39 protected Set<Resource> initial() {
\r
40 return Collections.emptySet();
\r
44 protected Set<Resource> compute(ReadGraph graph, NodeContext context, PrimitiveQueryKey<Container<Set<Resource>>> key) throws DatabaseException {
\r
45 Object input = context.getConstant(BuiltinKeys.INPUT);
\r
46 if (input instanceof Resource) {
\r
47 return graph.getSupertypes((Resource) input);
\r
48 } else if (input instanceof ResourceArray) {
\r
49 return graph.getSupertypes(((ResourceArray) input).resources[0]);
\r
51 return Collections.emptySet();
\r