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* 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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* KIND, either express or implied. See the License for the
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package org.apache.cayenne.access;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.apache.art.ArtGroup;
import org.apache.art.Artist;
import org.apache.art.Painting;
import org.apache.cayenne.PersistenceState;
import org.apache.cayenne.ValueHolder;
import org.apache.cayenne.query.PrefetchTreeNode;
import org.apache.cayenne.query.SelectQuery;
import org.apache.cayenne.unit.CayenneCase;
/**
*/
public class FlattenedPrefetchTest extends CayenneCase {
@Override
protected void setUp() throws Exception {
super.setUp();
deleteTestData();
}
public void testManyToMany() throws Exception {
createTestData("testPrefetch1");
SelectQuery q = new SelectQuery(Artist.class);
q.addPrefetch(Artist.GROUP_ARRAY_PROPERTY);
DataContext context = createDataContext();
List objects = context.performQuery(q);
blockQueries();
try {
assertEquals(3, objects.size());
Iterator it = objects.iterator();
while (it.hasNext()) {
Artist a = (Artist) it.next();
List list = a.getGroupArray();
assertNotNull(list);
assertFalse("artist's groups not resolved: " + a, ((ValueHolder) list).isFault());
assertTrue(list.size() > 0);
Iterator children = list.iterator();
while (children.hasNext()) {
ArtGroup g = (ArtGroup) children.next();
assertEquals(PersistenceState.COMMITTED, g.getPersistenceState());
}
// assert no duplicates
Set s = new HashSet(list);
assertEquals(s.size(), list.size());
}
}
finally {
unblockQueries();
}
}
public void testMultiPrefetch() throws Exception {
createTestData("testPrefetch2");
SelectQuery q = new SelectQuery(Painting.class);
q.addPrefetch(Painting.TO_ARTIST_PROPERTY);
q.addPrefetch(Painting.TO_ARTIST_PROPERTY + '.' + Artist.GROUP_ARRAY_PROPERTY);
DataContext context = createDataContext();
List objects = context.performQuery(q);
blockQueries();
try {
assertEquals(3, objects.size());
Iterator it = objects.iterator();
while (it.hasNext()) {
Painting p = (Painting) it.next();
Artist a = p.getToArtist();
assertEquals(PersistenceState.COMMITTED, a.getPersistenceState());
List list = a.getGroupArray();
assertNotNull(list);
assertFalse("artist's groups not resolved: " + a, ((ValueHolder)list).isFault());
assertTrue(list.size() > 0);
Iterator children = list.iterator();
while (children.hasNext()) {
ArtGroup g = (ArtGroup) children.next();
assertEquals(PersistenceState.COMMITTED, g.getPersistenceState());
}
// assert no duplicates
Set s = new HashSet(list);
assertEquals(s.size(), list.size());
}
}
finally {
unblockQueries();
}
}
public void testJointManyToMany() throws Exception {
createTestData("testPrefetch1");
SelectQuery q = new SelectQuery(Artist.class);
q.addPrefetch(Artist.GROUP_ARRAY_PROPERTY).setSemantics(
PrefetchTreeNode.JOINT_PREFETCH_SEMANTICS);
DataContext context = createDataContext();
List objects = context.performQuery(q);
blockQueries();
try {
assertEquals(3, objects.size());
Iterator it = objects.iterator();
while (it.hasNext()) {
Artist a = (Artist) it.next();
List list = a.getGroupArray();
assertNotNull(list);
assertFalse("artist's groups not resolved: " + a, ((ValueHolder) list).isFault());
assertTrue(list.size() > 0);
Iterator children = list.iterator();
while (children.hasNext()) {
ArtGroup g = (ArtGroup) children.next();
assertEquals(PersistenceState.COMMITTED, g.getPersistenceState());
}
// assert no duplicates
Set s = new HashSet(list);
assertEquals(s.size(), list.size());
}
}
finally {
unblockQueries();
}
}
public void testJointMultiPrefetch() throws Exception {
createTestData("testPrefetch2");
SelectQuery q = new SelectQuery(Painting.class);
q.addPrefetch(Painting.TO_ARTIST_PROPERTY).setSemantics(
PrefetchTreeNode.JOINT_PREFETCH_SEMANTICS);
q
.addPrefetch(
Painting.TO_ARTIST_PROPERTY + '.' + Artist.GROUP_ARRAY_PROPERTY)
.setSemantics(PrefetchTreeNode.JOINT_PREFETCH_SEMANTICS);
DataContext context = createDataContext();
List objects = context.performQuery(q);
blockQueries();
try {
assertEquals(3, objects.size());
Iterator it = objects.iterator();
while (it.hasNext()) {
Painting p = (Painting) it.next();
Artist a = p.getToArtist();
assertEquals(PersistenceState.COMMITTED, a.getPersistenceState());
List list = a.getGroupArray();
assertNotNull(list);
assertFalse("artist's groups not resolved: " + a, ((ValueHolder) list).isFault());
assertTrue(list.size() > 0);
Iterator children = list.iterator();
while (children.hasNext()) {
ArtGroup g = (ArtGroup) children.next();
assertEquals(PersistenceState.COMMITTED, g.getPersistenceState());
}
// assert no duplicates
Set s = new HashSet(list);
assertEquals(s.size(), list.size());
}
}
finally {
unblockQueries();
}
}
}