1 /*******************************************************************************
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2 * Copyright (c) 2007, 2013 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.objmap.structural.rules.domain;
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14 import java.util.ArrayList;
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15 import java.util.Collection;
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16 import java.util.Collections;
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17 import java.util.List;
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19 import org.apache.log4j.Logger;
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20 import org.simantics.db.ReadGraph;
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21 import org.simantics.db.Resource;
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22 import org.simantics.db.WriteGraph;
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23 import org.simantics.db.exception.DatabaseException;
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24 import org.simantics.objmap.exceptions.MappingException;
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25 import org.simantics.objmap.graph.rules.domain.IDomainAccessor;
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26 import org.simantics.objmap.graph.rules.domain.MappingUtils;
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27 import org.simantics.objmap.structural.StructuralResource;
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30 public class RelatedObjectsAccessor implements IDomainAccessor<StructuralResource,Collection<StructuralResource>> {
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32 static Logger LOGGER = Logger.getLogger("org.simantics.objmap");
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35 boolean deleteExtraObjects;
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36 boolean useTypeResource;
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38 private boolean preventStructuralChanges = true;
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39 private boolean preventStructuralRootChanges = true;
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41 public RelatedObjectsAccessor(Resource relation, boolean deleteExtraObjects, boolean useTypeResource) {
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43 this.relation = relation;
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44 this.deleteExtraObjects = deleteExtraObjects;
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45 this.useTypeResource = useTypeResource;
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48 public RelatedObjectsAccessor(Resource relation, boolean deleteExtraObjects, boolean useTypeResource, boolean preventStructuralChanges, boolean preventStructuralRootChanges) {
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50 this.relation = relation;
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51 this.deleteExtraObjects = deleteExtraObjects;
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52 this.useTypeResource = useTypeResource;
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53 this.preventStructuralChanges = preventStructuralChanges;
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54 this.preventStructuralRootChanges = preventStructuralRootChanges;
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58 public Collection<StructuralResource> get(ReadGraph g, StructuralResource element) throws MappingException {
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60 LOGGER.info(" RelatedObjectsAccessor.get");
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63 Resource res = getServiceResource(g, element);
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65 return Collections.emptyList();
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66 Collection<Resource> coll = g.getObjects(res, relation);
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67 List<StructuralResource> result = new ArrayList<StructuralResource>(coll.size());
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68 for (Resource r : coll) {
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69 if (StructuralUtils.isStructuralInstance(g, r)) {
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70 result.add(new StructuralResource(g, r, element.getContext(),r));
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72 result.add(new StructuralResource(g, r, element.getContext()));
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76 } catch (DatabaseException e) {
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77 throw new MappingException(e);
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81 private boolean preventChange(StructuralResource element) {
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82 return preventStructuralChanges && element.isStructural() && (!element.isStructuralRoot()||preventStructuralRootChanges);
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86 public boolean set(WriteGraph g, StructuralResource element, Collection<StructuralResource> value)
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87 throws MappingException {
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89 LOGGER.info(" RelatedObjectsAccessor.set");
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90 Resource res = getServiceResource(g, element);
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93 if (preventChange(element))
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95 Resource[] arr = new Resource[value.size()];
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97 for (StructuralResource sr : value) {
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98 arr[i++] = sr.getResource();
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100 return MappingUtils.synchronizeStatements(g, res, relation,
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101 arr, deleteExtraObjects);
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102 } catch (DatabaseException e) {
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103 throw new MappingException(e);
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108 private Resource getServiceResource(ReadGraph g, StructuralResource element) {
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109 if (!useTypeResource)
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110 return element.getResource();
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111 return element.getTypeResource();
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