/*
 * 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
 *
 * 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 org.apache.openjpa.persistence.embed;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.EntityTransaction;

import org.apache.openjpa.persistence.test.SQLListenerTestCase;

public class TestEmbedded extends SQLListenerTestCase {
    public void setUp() {
        super.setUp(BaseEntity.class, Address.class, Geocode.class,
                CLEAR_TABLES);
    }

    public void testInsertEmbedded() {
        EntityManager em = emf.createEntityManager();
        em.getTransaction().begin();
        Address a = new Address();
        a.setStreetAddress("123 Main St");
        a.setCity("Chicago");
        a.setState("IL");
        a.setZip(60606);
        Geocode g = new Geocode();
        g.setLatitude(1.0f);
        g.setLongtitude(2.0f);
        a.setGeocode(g);
        em.persist(a);
        em.getTransaction().commit();
        em.close();
    }
    
    /*
     * This variation verifies that an embedded entity can be accessed after
     * being detached.  An entity /w embedded is persisted and then queried.
     * The em is closed, detaching the entities, and then a getter is called
     * on the embeddeded.  If the embedded is still attached (it should not be)
     * an IllegalStateException will be thrown.    
     * 
     * JIRA Ref: OPENJPA-733
     * Authors: Chris Tillman, Jeremy Bauer
     */    
    public void testDetachedQueryEmbedded() {
        Address a = new Address();
        a.setStreetAddress("456 Main St");
        a.setCity("New York");
        a.setState("NY");
        a.setZip(12955);
        Geocode g = new Geocode();
        g.setLatitude(1.0f);
        g.setLongtitude(2.0f);
        a.setGeocode(g);
        
        persistAddress(a);
        
        Address a2 = queryAddresses(
                "select address from Address address" +
                " where address.streetAddress = '456 Main St'").get(0);
        
        assertEquals(a2.getGeocode().getLatitude(),1.0f);
    }
    
    public void testDeleteEmbeddedDoesNotSelectBeforeDelete() {
        EntityManager em = emf.createEntityManager();
        em.getTransaction().begin();
        String[] streets = {"S1", "S2", "S3"};
        String[] cities = {"C1", "C2", "C3"};
        String[] states = {"AB", "CD", "EF"};
        int[] zips = {123456, 345678, 456789};
        
        for (int i = 0; i < streets.length; i++) {
            Address a = new Address();
            a.setStreetAddress(streets[i]);
            a.setCity(cities[i]);
            a.setState(states[i]);
            a.setZip(zips[i]);
            Geocode g = new Geocode();
            g.setLatitude(i+1.0f);
            g.setLongtitude(i+6.0f);
            a.setGeocode(g);
            em.persist(a);
        } 
        em.getTransaction().commit();
        em.close();
        
        em = emf.createEntityManager();
        em.getTransaction().begin();
        sql.clear();
        int count = em.createQuery("DELETE FROM Address a WHERE a.zip=:zip")
            .setParameter("zip", zips[0])
            .executeUpdate();
        assertEquals(1, count);
        em.getTransaction().commit();
        assertEquals(1, sql.size());
        
        em.getTransaction().begin();
        sql.clear();
        count = em.createQuery("DELETE FROM Address").executeUpdate();
        assertEquals(streets.length-1, count);
        assertTrue(count>1);
        em.getTransaction().commit();
        assertEquals(1, sql.size());
        em.close();
    }

    private void persistAddress(Address address) {
        final EntityManager em = emf.createEntityManager();
        final EntityTransaction tx = em.getTransaction();

        tx.begin();

        try {
            em.persist(address);
            tx.commit();
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            em.close();
        }
        assertEquals(address.getGeocode().getLatitude(),1.0f);
    }

    private List<Address> queryAddresses(String query) {
        final EntityManager em = emf.createEntityManager();
        final EntityTransaction tx = em.getTransaction();

        tx.begin();

        try {
            final List<Address> list = (List<Address>) em.createQuery(query)
                            .getResultList();
            tx.commit();
            return list;
        } finally {
            if (tx.isActive()) {
                tx.rollback();
            }
            em.close();
        }
    }
}