com.github.snd297.hibernatecollections.PublicCollectionTest.java Source code

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Here is the source code for com.github.snd297.hibernatecollections.PublicCollectionTest.java

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/*
 * Copyright 2013 Sam Donnelly
 *
 * Licensed 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
 *
 * 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 "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 com.github.snd297.hibernatecollections;

import static com.google.common.base.Predicates.compose;
import static com.google.common.base.Predicates.equalTo;
import static com.google.common.collect.Iterables.find;
import static com.google.common.collect.Sets.newHashSet;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.util.Set;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.collection.spi.PersistentCollection;
import org.junit.BeforeClass;
import org.junit.Test;

import com.github.snd297.hibernatecollections.model.BadBicycle;
import com.github.snd297.hibernatecollections.model.Bicycle;
import com.github.snd297.hibernatecollections.model.IHasLongId;
import com.github.snd297.hibernatecollections.model.Wheel;
import com.github.snd297.hibernatecollections.model.WheelInBadBicycle;
import com.github.snd297.hibernatecollections.persistence.HibernateUtil;

public class PublicCollectionTest {

    private static Long badBicycleId;
    private static Long bicycleId;

    @BeforeClass
    public static void classSetup() throws Exception {
        Session sess = null;
        Transaction trx = null;
        try {
            sess = HibernateUtil.getSessionFactory().openSession();

            trx = sess.beginTransaction();

            BadBicycle badBicycle = new BadBicycle();
            sess.save(badBicycle);
            sess.save(new WheelInBadBicycle(badBicycle));
            sess.save(new WheelInBadBicycle(badBicycle));

            Bicycle bicycle = new Bicycle();
            sess.save(bicycle);
            sess.save(new Wheel(bicycle));
            sess.save(new Wheel(bicycle));

            trx.commit();

            badBicycleId = badBicycle.getId();
            bicycleId = bicycle.getId();

        } catch (Exception e) {
            HibernateUtil.rollbackQuietly(trx);
            throw e;
        } finally {
            HibernateUtil.closeQuietly(sess);
        }
    }

    @Test(expected = HibernateException.class)
    public void orphanedCollection() throws Exception {
        Session sess = null;
        Transaction trx = null;
        try {
            sess = HibernateUtil.getSessionFactory().openSession();

            trx = sess.beginTransaction();

            BadBicycle bicycle = (BadBicycle) sess.get(BadBicycle.class, badBicycleId);

            Set<WheelInBadBicycle> wheels = bicycle.getWheels();
            assertTrue(wheels instanceof PersistentCollection);

            WheelInBadBicycle newWheel0 = new WheelInBadBicycle(bicycle);
            WheelInBadBicycle newWheel1 = new WheelInBadBicycle(bicycle);

            sess.save(newWheel0);
            sess.save(newWheel1);

            Set<WheelInBadBicycle> newWheels = newHashSet(newWheel0, newWheel1);

            bicycle.setWheels(newWheels);
            try {
                trx.commit();
            } catch (HibernateException he) {
                assertTrue(he.getMessage().equals(
                        "A collection with cascade=\"all-delete-orphan\" was no longer referenced by the owning entity instance: com.github.snd297.hibernatecollections.model.BadBicycle.wheels"));
                throw he;
            }

        } catch (Exception e) {
            HibernateUtil.rollbackQuietly(trx);
            throw e;
        } finally {
            HibernateUtil.closeQuietly(sess);
        }
    }

    @Test
    public void fixedCollection() throws Exception {
        Session sess = null;
        Transaction trx = null;
        Long newWheel0Id = null;
        Long newWheel1Id = null;
        try {
            sess = HibernateUtil.getSessionFactory().openSession();

            trx = sess.beginTransaction();

            Bicycle bicycle = (Bicycle) sess.load(Bicycle.class, bicycleId);
            Set<Wheel> wheels = bicycle.getWheels();

            assertTrue(wheels instanceof PersistentCollection);

            Wheel newWheel0 = new Wheel(bicycle);
            Wheel newWheel1 = new Wheel(bicycle);

            sess.save(newWheel0);
            sess.save(newWheel1);

            Set<Wheel> newWheels = newHashSet(newWheel0, newWheel1);

            bicycle.getWheels().clear();
            bicycle.getWheels().addAll(newWheels);
            trx.commit();

            newWheel0Id = newWheel0.getId();
            newWheel1Id = newWheel1.getId();

        } catch (Exception e) {
            HibernateUtil.rollbackQuietly(trx);
            throw e;
        } finally {
            HibernateUtil.closeQuietly(sess);
        }

        try {
            sess = HibernateUtil.getSessionFactory().openSession();

            trx = sess.beginTransaction();

            Bicycle bicycle = (Bicycle) sess.load(Bicycle.class, bicycleId);
            Set<Wheel> wheels = bicycle.getWheels();

            assertEquals(2, wheels.size());

            assertNotNull(find(wheels, compose(equalTo(newWheel0Id), IHasLongId.getId), null));

            assertNotNull(find(wheels, compose(equalTo(newWheel1Id), IHasLongId.getId), null));

            trx.commit();
        } catch (Exception e) {
            HibernateUtil.rollbackQuietly(trx);
            throw e;
        } finally {
            HibernateUtil.closeQuietly(sess);
        }
    }
}