1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 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.browsing.ui.graph.impl;
14 import java.util.Collection;
16 import org.simantics.browsing.ui.common.modifiers.EnumeratedValue;
17 import org.simantics.browsing.ui.common.modifiers.Enumeration;
18 import org.simantics.databoard.Bindings;
19 import org.simantics.db.Resource;
20 import org.simantics.db.Session;
21 import org.simantics.db.WriteGraph;
22 import org.simantics.db.common.utils.NameUtils;
23 import org.simantics.db.exception.DatabaseException;
24 import org.simantics.db.exception.ValidationException;
25 import org.simantics.layer0.Layer0;
28 * A graph resource based EnumerationModifier utility implementation.
30 * @author Tuukka Lehtonen
32 public class GraphEnumerationModifier extends GraphEnumerationModifierBase<Resource> {
34 protected final Resource subject;
35 protected final Resource relation;
37 public GraphEnumerationModifier(Session session, Resource subject, Resource relation, Enumeration<Resource> enumeration, Resource value) {
38 this(session, subject, relation, enumeration, enumeration.find(value));
41 public GraphEnumerationModifier(Session session, Resource subject, Resource relation, Enumeration<Resource> enumeration, EnumeratedValue<Resource> value) {
42 super(session, enumeration, value);
44 throw new NullPointerException("null subject");
46 throw new NullPointerException("null relation");
48 this.subject = subject;
49 this.relation = relation;
53 protected void modifyWithObject(WriteGraph graph, Resource oldEnumObject, Resource enumObject) throws DatabaseException {
54 // System.out.println("subject: " + NameUtils.getSafeName(graph, subject));
55 // System.out.println("relation: " + NameUtils.getSafeName(graph, relation));
56 // System.out.println("old enum object: " + NameUtils.getSafeName(graph, oldEnumObject));
57 // System.out.println("enum object: " + NameUtils.getSafeName(graph, enumObject));
59 // FIXME: this is a hackish way to support enumeration style editing for boolean values.
60 // See GetEnumeration for why this works.
61 Layer0 l0 = Layer0.getInstance(graph);
62 if (l0.True.equals(enumObject) || l0.False.equals(enumObject)) {
63 Boolean value = Boolean.valueOf(l0.True.equals(enumObject));
64 // NOTE: this assumes that relation is functional, otherwise it will fail.
65 Collection<Resource> props = graph.getObjects(subject, relation);
66 if (props.size() > 1) {
67 throw new ValidationException("Multiple (" + props.size() + ") '" + NameUtils.getSafeName(graph, relation) + "' properties found for resource '" + NameUtils.getSafeName(graph, subject) + "'. Expected functional property.");
69 graph.claimLiteral(subject, relation, value, Bindings.BOOLEAN);
71 if (oldEnumObject != null)
72 //graph.deny(subject, relation, oldEnumObject);
73 graph.deny(subject, relation);
74 if (enumObject != null)
75 graph.claim(subject, relation, null, enumObject);