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 java.util.Collection;
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15 import java.util.HashSet;
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16 import java.util.Set;
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18 import org.simantics.db.ReadGraph;
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19 import org.simantics.db.Resource;
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20 import org.simantics.db.exception.DatabaseException;
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22 final public class ObjectsWithType extends ResourceRead3<Collection<Resource>> {
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24 public ObjectsWithType(Resource subject, Resource subrelationOf, Resource instanceOf) {
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25 super(subject, subrelationOf, instanceOf);
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29 public Collection<Resource> perform(ReadGraph graph) throws DatabaseException {
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31 Set<Resource> result = new HashSet<Resource>();
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32 for(Resource object : graph.getObjects(resource, resource2)) {
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33 if(graph.isInstanceOf(object, resource3)) result.add(object);
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