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* to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne;
import java.util.Collection;
import org.apache.cayenne.exp.ExpressionFactory;
import org.apache.cayenne.query.RefreshQuery;
import org.apache.cayenne.query.SelectQuery;
import org.apache.cayenne.testdo.relationship.CollectionToMany;
import org.apache.cayenne.testdo.relationship.CollectionToManyTarget;
import org.apache.cayenne.unit.RelationshipCase;
public class CDOCollectionRelationshipTest extends RelationshipCase {
@Override
protected void setUp() throws Exception {
deleteTestData();
}
public void testReadToMany() throws Exception {
createTestData("prepare");
CollectionToMany o1 = Cayenne.objectForPK(
createDataContext(),
CollectionToMany.class,
1);
Collection targets = o1.getTargets();
assertNotNull(targets);
assertTrue(((ValueHolder) targets).isFault());
assertEquals(3, targets.size());
assertTrue(targets.contains(Cayenne.objectForPK(
o1.getObjectContext(),
CollectionToManyTarget.class,
1)));
assertTrue(targets.contains(Cayenne.objectForPK(
o1.getObjectContext(),
CollectionToManyTarget.class,
2)));
assertTrue(targets.contains(Cayenne.objectForPK(
o1.getObjectContext(),
CollectionToManyTarget.class,
3)));
}
public void testReadToManyPrefetching() throws Exception {
createTestData("prepare");
SelectQuery query = new SelectQuery(CollectionToMany.class, ExpressionFactory
.matchDbExp(CollectionToMany.ID_PK_COLUMN, new Integer(1)));
query.addPrefetch(CollectionToMany.TARGETS_PROPERTY);
CollectionToMany o1 = (CollectionToMany) Cayenne.objectForQuery(
createDataContext(),
query);
Collection targets = o1.getTargets();
assertFalse(((ValueHolder) targets).isFault());
assertNotNull(targets);
assertEquals(3, targets.size());
assertTrue(targets.contains(Cayenne.objectForPK(
o1.getObjectContext(),
CollectionToManyTarget.class,
1)));
assertTrue(targets.contains(Cayenne.objectForPK(
o1.getObjectContext(),
CollectionToManyTarget.class,
2)));
assertTrue(targets.contains(Cayenne.objectForPK(
o1.getObjectContext(),
CollectionToManyTarget.class,
3)));
}
public void testAddToMany() throws Exception {
createTestData("prepare");
CollectionToMany o1 = Cayenne.objectForPK(
createDataContext(),
CollectionToMany.class,
1);
Collection targets = o1.getTargets();
assertNotNull(targets);
assertEquals(3, targets.size());
CollectionToManyTarget newTarget = o1
.getObjectContext()
.newObject(CollectionToManyTarget.class);
o1.addToTargets(newTarget);
assertEquals(4, targets.size());
assertTrue(o1.getTargets().contains(newTarget));
assertSame(o1, newTarget.getCollectionToMany());
o1.getObjectContext().commitChanges();
o1.getObjectContext().performGenericQuery(new RefreshQuery());
assertEquals(4, o1.getTargets().size());
}
public void testRemoveToMany() throws Exception {
createTestData("prepare");
CollectionToMany o1 = Cayenne.objectForPK(
createDataContext(),
CollectionToMany.class,
1);
Collection targets = o1.getTargets();
assertEquals(3, targets.size());
CollectionToManyTarget target = Cayenne
.objectForPK(o1.getObjectContext(), CollectionToManyTarget.class, 2);
o1.removeFromTargets(target);
assertEquals(2, targets.size());
assertFalse(o1.getTargets().contains(target));
assertNull(target.getCollectionToMany());
o1.getObjectContext().commitChanges();
o1.getObjectContext().performGenericQuery(new RefreshQuery());
assertEquals(2, o1.getTargets().size());
assertFalse(o1.getTargets().contains(target));
}
public void testAddToManyViaReverse() throws Exception {
createTestData("prepare");
CollectionToMany o1 = Cayenne.objectForPK(
createDataContext(),
CollectionToMany.class,
1);
Collection targets = o1.getTargets();
assertNotNull(targets);
assertEquals(3, targets.size());
CollectionToManyTarget newTarget = o1
.getObjectContext()
.newObject(CollectionToManyTarget.class);
newTarget.setCollectionToMany(o1);
assertEquals(4, targets.size());
assertTrue(o1.getTargets().contains(newTarget));
assertSame(o1, newTarget.getCollectionToMany());
o1.getObjectContext().commitChanges();
o1.getObjectContext().performGenericQuery(new RefreshQuery());
assertEquals(4, o1.getTargets().size());
}
}