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.HashMap;
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15 import java.util.Map;
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17 import org.simantics.db.ReadGraph;
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18 import org.simantics.db.Resource;
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19 import org.simantics.db.exception.DatabaseException;
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20 import org.simantics.layer0.Layer0;
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21 import org.simantics.operation.Layer0X;
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24 * Given an input resource that consists of resources representing other
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25 * resources, return a map: represented resource -> representing resource.
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27 * @author Antti Villberg
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29 public class MappedParts extends ResourceRead<Map<Resource, Resource>> {
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31 public MappedParts(Resource flat) {
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36 public Map<Resource, Resource> perform(ReadGraph graph) throws DatabaseException {
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38 Layer0 l0 = Layer0.getInstance(graph);
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39 Layer0X L0X = Layer0X.getInstance(graph);
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40 Map<Resource, Resource> result = new HashMap<Resource, Resource>();
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42 for (Resource part : graph.getObjects(resource, l0.ConsistsOf)) {
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43 Resource represents = graph.getPossibleObject(part, L0X.Represents);
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44 if (represents != null)
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45 result.put(represents, part);
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