content: /*****************************************************************
   *   Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  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
   *  with the License.  You may obtain a copy of the License at
   *
   *    https://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
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   ****************************************************************/
  package org.apache.cayenne;
  
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.exp.ExpressionFactory;
  import org.apache.cayenne.query.ObjectSelect;
  import org.apache.cayenne.query.RefreshQuery;
  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.runtime.CayenneProjects;
  import org.apache.cayenne.unit.di.runtime.RuntimeCase;
  import org.apache.cayenne.unit.di.runtime.UseCayenneRuntime;
  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;
  
  @UseCayenneRuntime(CayenneProjects.RELATIONSHIPS_COLLECTION_TO_MANY_PROJECT)
  public class CDOCollectionRelationshipIT extends RuntimeCase {
  
      @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 {
          CollectionToMany o1 = ObjectSelect.query(CollectionToMany.class)
                  .where(ExpressionFactory.matchDbExp(CollectionToMany.ID_PK_COLUMN, 1))
                  .prefetch(CollectionToMany.TARGETS.disjoint())
                  .selectOne(context);
  
          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());
      }
  }
  