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.graph.rules.domain;
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14 import java.util.Arrays;
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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.Statement;
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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.layer0.Layer0;
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23 import org.simantics.objmap.exceptions.MappingException;
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26 * Accesses a value attached to the element by given functional relation.
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27 * @author Hannu Niemist�
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29 public class RelatedValueAccessor implements IDomainAccessor<Resource,Object> {
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31 static Logger LOGGER = Logger.getLogger("org.simantics.objmap");
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36 public RelatedValueAccessor(Resource relation, Resource valueType) {
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37 this.relation = relation;
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38 this.valueType = valueType;
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42 public Object get(ReadGraph g, Resource element) throws MappingException {
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44 LOGGER.info(" RelatedValueAccessor.get");
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45 Resource valueResource = g.getPossibleObject(element, relation);
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46 if(valueResource == null)
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48 return g.getValue(valueResource);
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49 } catch (DatabaseException e) {
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50 throw new MappingException(e);
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55 public boolean set(WriteGraph g, Resource element, Object value)
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56 throws MappingException {
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58 LOGGER.info(" RelatedValueAccessor.set");
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59 Statement valueStatement = g.getPossibleStatement(element, relation);
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60 if(valueStatement == null) {
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63 Resource valueResource = g.newResource();
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64 g.claim(valueResource, Layer0.getInstance(g).InstanceOf, null,
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66 g.claim(element, relation, valueResource);
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67 g.claimValue(valueResource, value);
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72 if (!valueStatement.isAsserted(element)) {
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73 g.deny(valueStatement.getObject());
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79 Object currentValue = g.getValue(valueStatement.getObject());
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80 if(equals(currentValue,value))
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82 if (!valueStatement.isAsserted(element))
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83 g.claimValue(valueStatement.getObject(), value);
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85 Resource valueResource = g.newResource();
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86 g.claim(valueResource, Layer0.getInstance(g).InstanceOf, null,
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88 g.claim(element, relation, valueResource);
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89 g.claimValue(valueResource, value);
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93 } catch (DatabaseException e) {
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94 throw new MappingException(e);
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99 private boolean equals(Object o1, Object o2) {
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100 if (o1 instanceof boolean[])
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101 Arrays.equals((boolean[])o1,(boolean[])o2);
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102 if (o1 instanceof int[])
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103 Arrays.equals((int[])o1,(int[])o2);
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104 if (o1 instanceof float[])
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105 Arrays.equals((float[])o1,(float[])o2);
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106 if (o1 instanceof double[])
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107 Arrays.equals((double[])o1,(double[])o2);
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108 if (o1 instanceof byte[])
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109 Arrays.equals((byte[])o1,(byte[])o2);
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110 return o1.equals(o2);
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