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package org.apache.cayenne.access;
import org.apache.cayenne.DataChannel;
import org.apache.cayenne.DataChannelListener;
import org.apache.cayenne.ObjectContext;
import org.apache.cayenne.graph.GraphEvent;
import org.apache.cayenne.testdo.testmap.Artist;
import org.apache.cayenne.unit.CayenneCase;
import org.apache.cayenne.unit.util.ThreadedTestHelper;
import org.apache.cayenne.util.EventUtil;
/**
* Tests that DataContext sends DataChannel events.
*
*/
public class DataContextDataChannelEventsTest extends CayenneCase {
public void testCommitEvent() {
DataContext context = createDataContext();
Artist a = context.newObject(Artist.class);
a.setArtistName("X");
context.commitChanges();
MockChannelListener listener = new MockChannelListener();
EventUtil.listenForChannelEvents(context, listener);
a.setArtistName("Y");
context.commitChanges();
assertTrue(listener.graphCommitted);
assertFalse(listener.graphChanged);
assertFalse(listener.graphRolledBack);
}
public void testRollbackEvent() {
DataContext context = createDataContext();
Artist a = context.newObject(Artist.class);
a.setArtistName("X");
context.commitChanges();
MockChannelListener listener = new MockChannelListener();
EventUtil.listenForChannelEvents(context, listener);
a.setArtistName("Y");
context.rollbackChanges();
assertFalse(listener.graphCommitted);
assertFalse(listener.graphChanged);
assertTrue(listener.graphRolledBack);
}
public void testChangeEventOnChildChange() {
DataContext context = createDataContext();
Artist a = context.newObject(Artist.class);
a.setArtistName("X");
context.commitChanges();
MockChannelListener listener = new MockChannelListener();
EventUtil.listenForChannelEvents(context, listener);
ObjectContext child = context.createChildContext();
Artist a1 = (Artist) child.localObject(a.getObjectId(), a);
a1.setArtistName("Y");
child.commitChangesToParent();
assertFalse(listener.graphCommitted);
assertTrue(listener.graphChanged);
assertFalse(listener.graphRolledBack);
}
public void testChangeEventOnPeerChange() throws Exception {
DataContext context = createDataContext();
Artist a = context.newObject(Artist.class);
a.setArtistName("X");
context.commitChanges();
final MockChannelListener listener = new MockChannelListener();
EventUtil.listenForChannelEvents(context, listener);
DataContext peer = createDataContextWithSharedCache(false);
Artist a1 = (Artist) peer.localObject(a.getObjectId(), a);
a1.setArtistName("Y");
peer.commitChangesToParent();
new ThreadedTestHelper() {
@Override
protected void assertResult() throws Exception {
assertFalse(listener.graphCommitted);
assertTrue(listener.graphChanged);
assertFalse(listener.graphRolledBack);
}
}.assertWithTimeout(1000);
}
public void testChangeEventOnPeerChangeSecondNestingLevel() throws Exception {
DataContext context = createDataContext();
ObjectContext childPeer1 = context.createChildContext();
Artist a = childPeer1.newObject(Artist.class);
a.setArtistName("X");
childPeer1.commitChanges();
final MockChannelListener listener = new MockChannelListener();
EventUtil.listenForChannelEvents((DataChannel) childPeer1, listener);
ObjectContext childPeer2 = context.createChildContext();
Artist a1 = (Artist) childPeer2.localObject(a.getObjectId(), a);
a1.setArtistName("Y");
childPeer2.commitChangesToParent();
new ThreadedTestHelper() {
@Override
protected void assertResult() throws Exception {
assertFalse(listener.graphCommitted);
assertTrue(listener.graphChanged);
assertFalse(listener.graphRolledBack);
}
}.assertWithTimeout(1000);
}
class MockChannelListener implements DataChannelListener {
boolean graphChanged;
boolean graphCommitted;
boolean graphRolledBack;
public void graphChanged(GraphEvent event) {
graphChanged = true;
}
public void graphFlushed(GraphEvent event) {
graphCommitted = true;
}
public void graphRolledback(GraphEvent event) {
graphRolledBack = true;
}
}
}