1 /*******************************************************************************
2 * Copyright (c) 2007, 2011 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.model.modifiers;
14 import org.simantics.browsing.ui.common.ErrorLogger;
15 import org.simantics.browsing.ui.content.Labeler.Modifier;
16 import org.simantics.db.ReadGraph;
17 import org.simantics.db.RequestProcessor;
18 import org.simantics.db.Resource;
19 import org.simantics.db.Statement;
20 import org.simantics.db.WriteGraph;
21 import org.simantics.db.common.primitiverequest.PossibleAdapter;
22 import org.simantics.db.common.request.WriteRequest;
23 import org.simantics.db.exception.DatabaseException;
24 import org.simantics.db.layer0.adapter.StringModifier;
25 import org.simantics.db.layer0.util.Layer0Utils;
26 import org.simantics.db.request.Read;
27 import org.simantics.layer0.Layer0;
29 public class L0StringModifier implements Modifier {
31 private final RequestProcessor processor;
32 private final Resource subject;
33 private final Resource propertyRelation;
34 private final Resource literal;
36 public L0StringModifier(RequestProcessor processor, Resource subject, Resource propertyRelation, Resource literal) {
37 this.processor = processor;
38 this.subject = subject;
39 this.propertyRelation = propertyRelation;
40 this.literal = literal;
44 public String getValue() {
46 return processor.syncRequest(new PossibleAdapter<String>(literal, String.class));
47 } catch (DatabaseException e) {
48 ErrorLogger.defaultLogError(e);
54 public String isValid(final String label) {
56 return processor.syncRequest(new Read<String>() {
58 public String perform(ReadGraph graph) throws DatabaseException {
59 StringModifier modifier = graph.adapt(literal, StringModifier.class);
60 return modifier.isValid(label);
63 } catch (DatabaseException e) {
64 ErrorLogger.defaultLogError(e);
65 return e.getMessage();
70 public void modify(final String label) {
72 processor.syncRequest(new WriteRequest() {
74 public void perform(WriteGraph graph) throws DatabaseException {
75 Layer0Utils.addCommentMetadata(graph, "Modify string");
76 graph.markUndoPoint();
77 Statement stm = graph.getPossibleStatement(subject, propertyRelation);
78 if (stm.isAsserted(subject)) {
79 Layer0 L0 = Layer0.getInstance(graph);
80 Resource newLiteral = graph.newResource();
81 for (Resource iof : graph.getObjects(literal, L0.InstanceOf))
82 graph.claim(newLiteral, L0.InstanceOf, null, iof);
83 graph.claim(subject, propertyRelation, newLiteral);
84 StringModifier modifier = graph.adapt(newLiteral, StringModifier.class);
85 modifier.modify(graph, label);
87 StringModifier modifier = graph.adapt(literal, StringModifier.class);
88 modifier.modify(graph, label);
92 } catch (DatabaseException e) {
93 ErrorLogger.defaultLogError(e);