1 /*******************************************************************************
2 * Copyright (c) 2007, 2013 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.objmap.graph.rules;
14 import java.util.Objects;
16 import org.simantics.db.ReadGraph;
17 import org.simantics.db.WriteGraph;
18 import org.simantics.objmap.backward.IBackwardMapping;
19 import org.simantics.objmap.bidirectional.IBidirectionalMappingRule;
20 import org.simantics.objmap.exceptions.MappingException;
21 import org.simantics.objmap.forward.IForwardMapping;
22 import org.simantics.objmap.graph.rules.domain.IDomainAccessor;
23 import org.simantics.objmap.graph.rules.range.IRangeAccessor;
24 import org.slf4j.Logger;
25 import org.slf4j.LoggerFactory;
28 * A rule that synchronizes collection of elements between
29 * domain and range accessors. Elements are mapped from
30 * between domain and range during the synchronization.
31 * @author Hannu Niemistö
33 public class MappedElementRule<Domain, Range> implements IBidirectionalMappingRule<Domain, Range> {
35 static final Logger LOGGER = LoggerFactory.getLogger(MappedElementRule.class);
37 IDomainAccessor<Domain,Domain> domainAccessor;
38 IRangeAccessor<Range,Range> rangeAccessor;
40 public MappedElementRule(IDomainAccessor<Domain,Domain> domainAccessor,
41 IRangeAccessor<Range,Range> rangeAccessor) {
42 this.domainAccessor = domainAccessor;
43 this.rangeAccessor = rangeAccessor;
47 public boolean updateDomain(WriteGraph g, IBackwardMapping<Domain, Range> map,
48 Domain domainElement, Range rangeElement)
49 throws MappingException {
50 LOGGER.trace(" MappedElementRule.updateDomain");
51 Range value = rangeAccessor.get(rangeElement);
52 Domain mappedValue = value == null ? null : map.inverseMap(g, value);//map.inverseGet(value);
53 return domainAccessor.set(g, domainElement, mappedValue);
57 public boolean updateRange(ReadGraph g, IForwardMapping<Domain, Range> map,
58 Domain domainElement, Range rangeElement)
59 throws MappingException {
60 LOGGER.trace(" MappedElementRule.updateRange");
61 Domain value = domainAccessor.get(g, domainElement);
62 Range mappedValue = value == null ? null : map.map(g, value);////map.get(value);
63 return rangeAccessor.set(rangeElement, mappedValue);
67 public boolean checkChanges(ReadGraph g, IForwardMapping<Domain, Range> map, Domain domainElement, Range rangeElement) throws MappingException {
68 Domain value = domainAccessor.get(g, domainElement);
69 Range mappedValue = value == null ? null : map.map(g, value);
70 return mappedValue == rangeAccessor.get(rangeElement);
74 public void createDomain(WriteGraph g, IBackwardMapping<Domain,Range> map, Domain domainElement, Range rangeElement) throws MappingException {
75 updateDomain(g, map, domainElement, rangeElement);
79 public void createRange(ReadGraph g, IForwardMapping<Domain,Range> map, Domain domainElement, Range rangeElement) throws MappingException {
80 updateRange(g, map, domainElement, rangeElement);