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.objmap.structural.rules.domain;
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14 import java.util.ArrayList;
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15 import java.util.List;
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17 import org.apache.log4j.Logger;
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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.WriteGraph;
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21 import org.simantics.db.exception.DatabaseException;
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22 import org.simantics.objmap.exceptions.MappingException;
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23 import org.simantics.objmap.graph.rules.domain.IDomainAccessor;
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24 import org.simantics.objmap.structural.StructuralResource;
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27 public class StructuralRelatedObjectAccessor implements IDomainAccessor<StructuralResource,StructuralResource> {
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29 static Logger LOGGER = Logger.getLogger("org.simantics.objmap");
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32 boolean useTypeResource;
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34 private boolean preventStructuralChanges = true;
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35 private boolean preventStructuralRootChanges = true;
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37 public StructuralRelatedObjectAccessor(Resource relation, boolean useTypeResource) {
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38 this.relation = relation;
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39 this.useTypeResource = useTypeResource;
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42 public StructuralRelatedObjectAccessor(Resource relation, boolean useTypeResource, boolean preventStructuralChanges, boolean preventStructuralRootChanges) {
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43 this.relation = relation;
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44 this.useTypeResource = useTypeResource;
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45 this.preventStructuralChanges = preventStructuralChanges;
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46 this.preventStructuralRootChanges = preventStructuralRootChanges;
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49 private boolean preventChange(StructuralResource element) {
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50 return preventStructuralChanges && element.isStructural() && (!element.isStructuralRoot()||preventStructuralRootChanges);
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54 public StructuralResource get(ReadGraph g, StructuralResource element) throws MappingException {
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57 LOGGER.info(" RelatedObjectAccessor.get");
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59 if (!element.isStructural())
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61 Resource instance = StructuralUtils.getContainingInstance(element);
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63 Resource publicRelation = StructuralUtils.getPublishedRelation(g, element, relation);
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65 if (publicRelation == null)
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67 Resource r = g.getPossibleObject(instance, publicRelation);
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70 List<Resource> context = new ArrayList<Resource>();
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71 for (int i = 0; i < element.getContext().size()-1; i++)
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72 context.add(element.getContext().get(i));
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73 if (StructuralUtils.isStructuralInstance(g, r)) {
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74 return new StructuralResource(g, r, context,r);
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76 return new StructuralResource(g, r, context);
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78 } catch (DatabaseException e) {
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79 throw new MappingException(e);
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84 public boolean set(WriteGraph g, StructuralResource element, StructuralResource value)
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85 throws MappingException {
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87 LOGGER.info(" RelatedObjectAccessor.set");
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88 Resource instance = StructuralUtils.getContainingInstance(element);
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89 Resource publicRelation = null;
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90 if (instance == null)
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92 publicRelation = StructuralUtils.getPublishedRelation(g, element, relation);
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93 if (value == null) {
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94 if (publicRelation == null)
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96 if (preventChange(element))
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98 g.deny(instance, publicRelation);
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101 if (publicRelation == null) {
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102 if (preventChange(element))
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104 publicRelation = StructuralUtils.getOrCreatePublishedRelation(g, element, relation);
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105 g.claim(instance, publicRelation, value.getResource());
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108 Resource r = g.getPossibleObject(instance, publicRelation);
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110 if (preventChange(element))
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112 g.claim(instance, publicRelation, value.getResource());
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115 if (r.equals(value.getResource()))
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117 if (preventChange(element))
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119 g.deny(instance, publicRelation);
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120 g.claim(instance, publicRelation, value.getResource());
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125 } catch (DatabaseException e) {
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126 throw new MappingException(e);
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