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.request;
\r
14 import org.simantics.databoard.Bindings;
\r
15 import org.simantics.db.ReadGraph;
\r
16 import org.simantics.db.Resource;
\r
17 import org.simantics.db.common.request.ResourceRead;
\r
18 import org.simantics.db.common.utils.NameUtils;
\r
19 import org.simantics.db.exception.DatabaseException;
\r
20 import org.simantics.db.exception.ValidationException;
\r
21 import org.simantics.layer0.Layer0;
\r
24 * @author Tuukka Lehtonen
\r
26 public class GetLabel extends ResourceRead<String> {
\r
28 public GetLabel(Resource r) {
\r
33 public String perform(ReadGraph graph) throws DatabaseException {
\r
34 Layer0 l0 = Layer0.getInstance(graph);
\r
35 String label = graph.getPossibleRelatedValue(resource, l0.HasLabel, Bindings.STRING);
\r
37 label = graph.getPossibleRelatedValue(resource, l0.HasName, Bindings.STRING);
\r
38 if (label == null) {
\r
39 String rep = NameUtils.getSafeName(graph, resource);
\r
40 throw new ValidationException("Resource '" + rep + "' does not have a Label or a Name property.");
\r