1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 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.db.common.request;
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14 import org.simantics.db.ReadGraph;
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15 import org.simantics.db.Resource;
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16 import org.simantics.db.exception.DatabaseException;
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17 import org.simantics.layer0.Layer0;
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19 final public class PossibleObjectWithName extends TernaryRead<Resource, Resource, String, Resource> {
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21 public PossibleObjectWithName(Resource resource, Resource predicate, String name) {
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22 super(resource, predicate, name);
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26 public Resource perform(ReadGraph graph) throws DatabaseException {
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27 Layer0 b = Layer0.getInstance(graph);
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28 Resource result = null;
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29 for(Resource object : graph.getObjects(parameter, parameter2)) {
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30 String name = graph.getPossibleRelatedValue(object, b.HasName);
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31 if(parameter3.equals(name)) {
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32 if(result != null) return null;
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