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.db.tests.api.request.misc;
14 import java.util.concurrent.atomic.AtomicBoolean;
15 import java.util.concurrent.atomic.AtomicInteger;
17 import org.junit.Test;
18 import org.simantics.databoard.Bindings;
19 import org.simantics.db.AsyncReadGraph;
20 import org.simantics.db.Resource;
21 import org.simantics.db.Session;
22 import org.simantics.db.WriteGraph;
23 import org.simantics.db.common.procedure.adapter.AsyncListenerAdapter;
24 import org.simantics.db.common.request.ResourceAsyncRead;
25 import org.simantics.db.common.request.WriteRequest;
26 import org.simantics.db.exception.DatabaseException;
27 import org.simantics.db.exception.RuntimeDatabaseException;
28 import org.simantics.db.procedure.AsyncProcedure;
29 import org.simantics.db.testing.base.ExistingDatabaseTest;
30 import org.simantics.layer0.Layer0;
33 * @author Tuukka Lehtonen
35 public class MultiListenerTest extends ExistingDatabaseTest {
37 static class TestRequest extends ResourceAsyncRead<String> {
38 public TestRequest(Resource resource) {
42 public void perform(AsyncReadGraph graph, AsyncProcedure<String> procedure) {
45 b = Layer0.getInstance(graph.getSession());
46 } catch (DatabaseException e) {
48 throw new RuntimeDatabaseException(e);
50 graph.forRelatedValue(resource, b.HasName, procedure);
54 static class TestListener extends AsyncListenerAdapter<String> {
56 AtomicInteger execs = new AtomicInteger();
57 AtomicBoolean disposed = new AtomicBoolean(false);
58 public TestListener(String id) {
61 public int getExecs() {
64 public void dispose() {
68 public boolean isDisposed() {
69 return disposed.get();
72 public void execute(AsyncReadGraph graph, String result) {
73 int c = execs.incrementAndGet();
75 System.out.println("Listener(" + id + ").execute(" + result + "), execution #" + c);
79 Resource testResource;
82 public void testMultipleListeners() throws Exception {
83 final Session session = getSession();
85 session.syncRequest(new WriteRequest() {
87 public void perform(WriteGraph graph) throws DatabaseException {
88 Layer0 b = Layer0.getInstance(graph);
89 testResource = graph.newResource();
90 graph.claim(testResource, b.InstanceOf, null, b.Entity);
91 graph.claimLiteral(testResource, b.HasName, "Test Entity", Bindings.STRING);
95 TestListener l1 = new TestListener("L1");
96 TestListener l2 = new TestListener("L2");
99 System.out.println("Start listening");
100 session.syncRequest(new TestRequest(testResource), l1);
101 session.syncRequest(new TestRequest(testResource), l2);
103 System.out.println("Listening");
105 assertEquals(l1.getExecs(), 1);
106 assertEquals(l2.getExecs(), 1);
109 System.out.println("Make modification, should fire listeners");
110 // Make a modification that should be notified for
111 session.syncRequest(new WriteRequest() {
113 public void perform(WriteGraph graph) throws DatabaseException {
114 Layer0 b = Layer0.getInstance(graph);
115 graph.claimLiteral(testResource, b.HasName, "Test Entity (modified name)", Bindings.STRING);
119 assertEquals(l1.getExecs(), 2);
120 assertEquals(l2.getExecs(), 2);
123 System.out.println("Dispose listener L1");
127 System.out.println("Make another modification, should fire only listener L2");
128 // Make a modification that should be notified for
129 session.syncRequest(new WriteRequest() {
131 public void perform(WriteGraph graph) throws DatabaseException {
132 Layer0 b = Layer0.getInstance(graph);
133 graph.claimLiteral(testResource, b.HasName, "Test Entity (even more modified name)", Bindings.STRING);
137 assertEquals(l1.getExecs(), 2);
138 assertEquals(l2.getExecs(), 3);