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