1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 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.db.common.request;
14 import java.util.Collection;
15 import java.util.HashSet;
18 import org.simantics.db.ReadGraph;
19 import org.simantics.db.Resource;
20 import org.simantics.db.exception.DatabaseException;
22 final public class ObjectsWithType extends ResourceRead3<Collection<Resource>> {
24 public ObjectsWithType(Resource subject, Resource subrelationOf, Resource instanceOf) {
25 super(subject, subrelationOf, instanceOf);
29 public Collection<Resource> perform(ReadGraph graph) throws DatabaseException {
31 Set<Resource> result = new HashSet<Resource>();
32 for(Resource object : graph.getObjects(resource, resource2)) {
33 if(graph.isInstanceOf(object, resource3)) result.add(object);