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.graph.schema;
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14 import java.util.ArrayList;
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16 import org.apache.log4j.Logger;
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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.WriteGraph;
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20 import org.simantics.db.common.utils.NameUtils;
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21 import org.simantics.db.exception.DatabaseException;
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22 import org.simantics.layer0.Layer0;
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23 import org.simantics.objmap.backward.IBackwardMapping;
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24 import org.simantics.objmap.bidirectional.IBidirectionalMappingRule;
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25 import org.simantics.objmap.exceptions.MappingException;
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26 import org.simantics.objmap.forward.IForwardMapping;
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30 * A link type that is associated with single domain and range type (class).
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31 * SimpleLinkType is composed of simpler rules whose combination determines
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32 * its update policy.
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33 * @author Hannu Niemist�
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35 public class SimpleLinkType<Range> implements ILinkType<Resource,Range> {
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37 static Logger LOGGER = Logger.getLogger("org.simantics.objmap");
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39 public Resource domainType;
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40 public Class<?> rangeType;
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41 ArrayList<IBidirectionalMappingRule<Resource, Range>> rules;
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43 public SimpleLinkType(Resource domainType, Class<?> rangeType,
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44 ArrayList<IBidirectionalMappingRule<Resource, Range>> rules) {
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45 this.domainType = domainType;
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46 this.rangeType = rangeType;
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50 public SimpleLinkType(Resource domainType, Class<?> rangeType) {
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51 this(domainType, rangeType, new ArrayList<IBidirectionalMappingRule<Resource, Range>>());
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55 * Adds a new rule to this link type that is enforced
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58 public void addRule(IBidirectionalMappingRule<Resource, Range> rule) {
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63 public Resource createDomainElement(WriteGraph g, Range rangeElement)
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64 throws MappingException {
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66 if(LOGGER.isInfoEnabled())
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67 LOGGER.info("SimpleLinkType.createDomainElement " +
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68 rangeElement.toString()
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70 Resource result = g.newResource();
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71 g.claim(result, Layer0.getInstance(g).InstanceOf, null, domainType);
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73 } catch(DatabaseException e) {
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74 throw new MappingException(e);
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78 public Range createRangeElement(ReadGraph g, Resource domainElement)
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79 throws MappingException {
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81 if(LOGGER.isInfoEnabled())
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83 LOGGER.info("SimpleLinkType.createRangeElement " +
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84 NameUtils.getSafeName(g, domainElement)
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86 } catch(DatabaseException e) {
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87 throw new MappingException(e);
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89 return (Range)rangeType.newInstance();
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90 } catch (InstantiationException e) {
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91 throw new MappingException(e);
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92 } catch (IllegalAccessException e) {
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93 throw new MappingException(e);
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97 public void createDomain(WriteGraph graph, IBackwardMapping<Resource,Range> mapping, Resource domainElement, Range rangeElement) throws MappingException {
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98 updateDomain(graph, mapping, domainElement, rangeElement);
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101 public void createRange(ReadGraph graph, org.simantics.objmap.forward.IForwardMapping<Resource,Range> mapping, Resource domainElement, Range rangeElement) throws MappingException {
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102 updateRange(graph, mapping, domainElement, rangeElement);
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105 public boolean updateDomain(WriteGraph g, IBackwardMapping<Resource,Range> map, Resource domainElement, Range rangeElement) throws MappingException {
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106 if(LOGGER.isInfoEnabled())
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108 LOGGER.info("SimpleLinkType.updateDomain " +
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109 NameUtils.getSafeName(g, domainElement) + " " +
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110 rangeElement.toString()
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112 } catch(DatabaseException e) {
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113 throw new MappingException(e);
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116 boolean updated = false;
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117 for(IBidirectionalMappingRule<Resource, Range> rule : rules)
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118 updated |= rule.updateDomain(g, map, domainElement, rangeElement);
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122 public boolean updateRange(ReadGraph g, IForwardMapping<Resource,Range> map, Resource domainElement, Range rangeElement) throws MappingException {
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124 if(LOGGER.isInfoEnabled())
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126 LOGGER.info("SimpleLinkType.updateRange " +
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127 NameUtils.getSafeName(g, domainElement) + " " +
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128 rangeElement.toString()
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130 } catch(DatabaseException e) {
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131 throw new MappingException(e);
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134 boolean updated = false;
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135 for(IBidirectionalMappingRule<Resource, Range> rule : rules)
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136 updated |= rule.updateRange(g, map, domainElement, rangeElement);
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