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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.tuscany.sdo.test;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import junit.framework.TestCase;
import org.apache.tuscany.sdo.api.SDOUtil;
import org.apache.tuscany.sdo.api.Event;
import org.apache.tuscany.sdo.impl.ListenerBase;
import commonj.sdo.DataObject;
import commonj.sdo.Type;
import commonj.sdo.helper.HelperContext;
import commonj.sdo.helper.TypeHelper;
/**
* Test DataObject Property value change notification
*/
public class NotificationTestCase extends TestCase {
HelperContext hc;
TypeHelper th;
private class Observer extends ListenerBase {
private int notificationCount;
private Event lastEvent;
public int getNotificationCount() {
return notificationCount;
}
public Event getLastEvent() {
return lastEvent;
}
public Observer() {
notificationCount = 0;
}
public void eventNotification(Event e) {
if (e.getEventType() != Event.REMOVE_LISTENER) {
notificationCount++;
lastEvent = e;
}
}
}
public void testTransitions() throws IOException {
final String TEST_MODEL = "/simple.xsd";
final String TEST_NAMESPACE = "http://www.example.com/simple";
// Populate the meta data for the test (Stock Quote) model
URL url = getClass().getResource(TEST_MODEL);
InputStream inputStream = url.openStream();
hc.getXSDHelper().define(inputStream, url.toString());
inputStream.close();
Type quoteType = th.getType(TEST_NAMESPACE, "Quote");
DataObject quote = hc.getDataFactory().create(quoteType);
Observer o = new Observer();
SDOUtil.addChangeListener(quote, o);
Event e;
String firstName = "FlyByNightTechnology";
int changeCount = 0;
quote.setString("companyName", firstName);
assertEquals(++changeCount, o.getNotificationCount());
e = o.getLastEvent();
assertEquals(Event.SET, e.getEventType());
assertEquals(null, e.getOldValue());
assertFalse(e.wasSet());
quote.setString("companyName", "FBNT");
e = o.getLastEvent();
assertTrue(e.wasSet());
assertEquals(firstName, e.getOldValue());
assertEquals(++changeCount, o.getNotificationCount());
assertEquals("companyName", e.getProperty().getName());
SDOUtil.removeChangeListener(quote, o);
quote.setString("companyName", "3rdValue");
e = o.getLastEvent();
assertEquals(firstName, e.getOldValue());
assertEquals(changeCount /* no ++ */, o.getNotificationCount());
SDOUtil.addChangeListener(quote, o);
quote.setString("companyName", "3rdValue");
assertEquals(++changeCount, o.getNotificationCount());
e = o.getLastEvent();
assertTrue(e.isTouch());
assertTrue(e.wasSet());
quote.unset("companyName");
assertEquals(++changeCount, o.getNotificationCount());
e = o.getLastEvent();
assertTrue(e.wasSet());
quote.set("companyName", "4thValue");
assertEquals(++changeCount, o.getNotificationCount());
e = o.getLastEvent();
assertFalse(e.wasSet());
assertEquals(Event.NO_INDEX, e.getPosition());
DataObject child = quote.createDataObject("quotes");
assertEquals(++changeCount, o.getNotificationCount());
e = o.getLastEvent();
assertFalse(e.wasSet());
assertEquals(0, e.getPosition());
assertEquals(Event.ADD, e.getEventType());
DataObject child2 = quote.createDataObject("quotes");
assertEquals(++changeCount, o.getNotificationCount());
e = o.getLastEvent();
assertTrue(e.wasSet()); // the quotes property was previously set to a non empty list
assertEquals(1, e.getPosition());
child2.setString("companyName", "subsidiary");
assertEquals(changeCount /* no ++ */, o.getNotificationCount()); // not monitoring the child
quote.getList("quotes").clear();
e = o.getLastEvent();
assertEquals(++changeCount, o.getNotificationCount());
assertEquals(Event.REMOVE_MANY, e.getEventType());
List newList = new ArrayList();
newList.add(hc.getDataFactory().create(quoteType));
newList.add(hc.getDataFactory().create(quoteType));
quote.getList("quotes").addAll(newList);
e = o.getLastEvent();
assertEquals(++changeCount, o.getNotificationCount());
assertEquals(Event.ADD_MANY, e.getEventType());
}
protected void setUp() throws Exception {
super.setUp();
hc = SDOUtil.createHelperContext();
th = hc.getTypeHelper();
}
}
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