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* 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
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*
* 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
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package org.apache.cayenne.access;
import org.apache.cayenne.Cayenne;
import org.apache.cayenne.query.SQLTemplate;
import org.apache.cayenne.query.SelectQuery;
import org.apache.cayenne.testdo.testmap.Artist;
import org.apache.cayenne.unit.CayenneCase;
import org.apache.cayenne.unit.util.ThreadedTestHelper;
public class ObjectStoreGCTest extends CayenneCase {
@Override
protected void setUp() throws Exception {
super.setUp();
deleteTestData();
}
public void testReleaseUnreferenced() throws Exception {
final DataContext context = createDataContext();
context.performGenericQuery(new SQLTemplate(
Artist.class,
"insert into ARTIST (ARTIST_ID, ARTIST_NAME) values (1, 'aa')"));
assertEquals(0, context.getObjectStore().registeredObjectsCount());
context.performQuery(new SelectQuery(Artist.class));
assertEquals(1, context.getObjectStore().registeredObjectsCount());
// allow for slow GC
new ThreadedTestHelper() {
@Override
protected void assertResult() throws Exception {
System.gc();
assertEquals(0, context.getObjectStore().registeredObjectsCount());
}
}.assertWithTimeout(2000);
}
public void testRetainUnreferencedNew() throws Exception {
final DataContext context = createDataContext();
assertEquals(0, context.getObjectStore().registeredObjectsCount());
Artist a = context.newObject(Artist.class);
a.setArtistName("X");
a = null;
assertEquals(1, context.getObjectStore().registeredObjectsCount());
// allow for slow GC
new ThreadedTestHelper() {
@Override
protected void assertResult() throws Exception {
System.gc();
assertEquals(1, context.getObjectStore().registeredObjectsCount());
}
}.assertWithTimeout(2000);
assertEquals(1, context.getObjectStore().registeredObjectsCount());
context.commitChanges();
new ThreadedTestHelper() {
@Override
protected void assertResult() throws Exception {
System.gc();
assertEquals(0, context.getObjectStore().registeredObjectsCount());
}
}.assertWithTimeout(2000);
}
public void testRetainUnreferencedModified() throws Exception {
final DataContext context = createDataContext();
context.performGenericQuery(new SQLTemplate(
Artist.class,
"insert into ARTIST (ARTIST_ID, ARTIST_NAME) values (1, 'aa')"));
assertEquals(0, context.getObjectStore().registeredObjectsCount());
Artist a = Cayenne.objectForPK(context, Artist.class, 1);
a.setArtistName("Y");
a = null;
assertEquals(1, context.getObjectStore().registeredObjectsCount());
new ThreadedTestHelper() {
@Override
protected void assertResult() throws Exception {
System.gc();
assertEquals(1, context.getObjectStore().registeredObjectsCount());
}
}.assertWithTimeout(2000);
context.commitChanges();
new ThreadedTestHelper() {
@Override
protected void assertResult() throws Exception {
System.gc();
assertEquals(0, context.getObjectStore().registeredObjectsCount());
}
}.assertWithTimeout(2000);
}
}