1 /*******************************************************************************
2 * Copyright (c) 2007, 2012 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.browsing.ui.swt.widgets;
14 import org.simantics.browsing.ui.swt.widgets.impl.ReadFactoryImpl;
15 import org.simantics.db.ReadGraph;
16 import org.simantics.db.Resource;
17 import org.simantics.db.exception.DatabaseException;
18 import org.simantics.utils.datastructures.Triple;
21 * @author Antti Villberg
23 public class StringPropertyFactory extends ReadFactoryImpl<Resource, String> {
25 private final String propertyURI;
26 private final String defaultValue;
28 public StringPropertyFactory(String propertyURI) {
29 this(propertyURI, null);
32 public StringPropertyFactory(String propertyURI, String defaultValue) {
33 this.propertyURI = propertyURI;
34 this.defaultValue = defaultValue;
38 public Object getIdentity(Object inputContents) {
39 return new Triple<Resource, String, Object>((Resource) inputContents, propertyURI, getClass());
43 public String perform(ReadGraph graph, Resource resource) throws DatabaseException {
44 String value = graph.getPossibleRelatedValue(resource, graph.getResource(propertyURI));
45 return value != null ? value : defaultValue;