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package org.apache.cayenne;
import org.apache.cayenne.di.Inject;
import org.apache.cayenne.exp.ExpressionFactory;
import org.apache.cayenne.query.RefreshQuery;
import org.apache.cayenne.query.SelectQuery;
import org.apache.cayenne.test.jdbc.DBHelper;
import org.apache.cayenne.test.jdbc.TableHelper;
import org.apache.cayenne.testdo.relationships_collection_to_many.CollectionToMany;
import org.apache.cayenne.testdo.relationships_collection_to_many.CollectionToManyTarget;
import org.apache.cayenne.unit.di.server.CayenneProjects;
import org.apache.cayenne.unit.di.server.ServerCase;
import org.apache.cayenne.unit.di.server.UseServerRuntime;
import org.junit.Before;
import org.junit.Test;
import java.util.Collection;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
@UseServerRuntime(CayenneProjects.RELATIONSHIPS_COLLECTION_TO_MANY_PROJECT)
public class CDOCollectionRelationshipIT extends ServerCase {
@Inject
private ObjectContext context;
@Inject
private DBHelper dbHelper;
@Before
public void setUp() throws Exception {
TableHelper tCollectionToMany = new TableHelper(dbHelper, "COLLECTION_TO_MANY");
tCollectionToMany.setColumns("ID");
TableHelper tCollectionToManyTarget = new TableHelper(
dbHelper,
"COLLECTION_TO_MANY_TARGET");
tCollectionToManyTarget.setColumns("ID", "COLLECTION_TO_MANY_ID");
// single data set for all tests
tCollectionToMany.insert(1).insert(2);
tCollectionToManyTarget.insert(1, 1).insert(2, 1).insert(3, 1).insert(4, 2);
}
@Test
public void testReadToMany() throws Exception {
CollectionToMany o1 = Cayenne.objectForPK(context, 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)));
}
@Test
public void testReadToManyPrefetching() throws Exception {
SelectQuery query = new SelectQuery(CollectionToMany.class, ExpressionFactory
.matchDbExp(CollectionToMany.ID_PK_COLUMN, 1));
query.addPrefetch(CollectionToMany.TARGETS.disjoint());
CollectionToMany o1 = (CollectionToMany) Cayenne.objectForQuery(context, 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)));
}
@Test
public void testAddToMany() throws Exception {
CollectionToMany o1 = Cayenne.objectForPK(context, 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());
}
@Test
public void testRemoveToMany() throws Exception {
CollectionToMany o1 = Cayenne.objectForPK(context, 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));
}
@Test
public void testAddToManyViaReverse() throws Exception {
CollectionToMany o1 = Cayenne.objectForPK(context, 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());
}
}