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 org.slf4j.Logger;
15 import org.slf4j.LoggerFactory;
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;
27 * A rule that synchronizes values between domain and
29 * @author Hannu Niemistö
31 public class ValueRule<Domain, Range> implements IBidirectionalMappingRule<Domain, Range> {
33 static Logger LOGGER = LoggerFactory.getLogger(ValueRule.class);
35 IDomainAccessor<Domain,Object> domainAccessor;
36 IRangeAccessor<Range,Object> rangeAccessor;
38 public ValueRule(IDomainAccessor<Domain,Object> domainAccessor,
39 IRangeAccessor<Range,Object> rangeAccessor) {
40 this.domainAccessor = domainAccessor;
41 this.rangeAccessor = rangeAccessor;
45 public boolean updateDomain(WriteGraph g, IBackwardMapping<Domain, Range> map,
46 Domain domainElement, Range rangeElement)
47 throws MappingException {
48 LOGGER.info(" ValueRule.updateDomain");
49 Object value = rangeAccessor.get(rangeElement);
50 return domainAccessor.set(g, domainElement, value);
54 public boolean updateRange(ReadGraph g, IForwardMapping<Domain, Range> map,
55 Domain domainElement, Range rangeElement)
56 throws MappingException {
57 LOGGER.info(" ValueRule.updateRange");
58 Object value = domainAccessor.get(g, domainElement);
59 return rangeAccessor.set(rangeElement, value);
62 public void createDomain(WriteGraph g, IBackwardMapping<Domain,Range> map, Domain domainElement, Range rangeElement) throws MappingException {
63 updateDomain(g, map, domainElement, rangeElement);
65 public void createRange(ReadGraph g, IForwardMapping<Domain,Range> map, Domain domainElement, Range rangeElement) throws MappingException {
66 updateRange(g, map, domainElement, rangeElement);