TestPersistenceProvider.java

/*
 * (C) Copyright 2013 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * 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.
 *
 * Contributors:
 *     Florent Guillaume
 */
package org.nuxeo.ecm.core.persistence;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.Query;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.nuxeo.ecm.core.test.CoreFeature;
import org.nuxeo.runtime.api.Framework;
import org.nuxeo.runtime.test.runner.Deploy;
import org.nuxeo.runtime.test.runner.Features;
import org.nuxeo.runtime.test.runner.FeaturesRunner;
import org.nuxeo.runtime.test.runner.LocalDeploy;

@RunWith(FeaturesRunner.class)
@Features(CoreFeature.class) // to init properties for SQL datasources
@Deploy("org.nuxeo.ecm.core.persistence")
@LocalDeploy("org.nuxeo.ecm.core.persistence.test:OSGI-INF/test-persistence-config.xml")
public class TestPersistenceProvider {

    protected PersistenceProvider persistenceProvider;

    @Before
    public void setUp() {
        activatePersistenceProvider();
    }

    @After
    public void tearDown() {
        EntityManager em = persistenceProvider.acquireEntityManager();

        // clean all entities
        Query q = em.createQuery("select id from DummyEntity");
        @SuppressWarnings("unchecked")
        List<String> list = (List<String>) q.getResultList();
        for (String id : list) {
            DummyEntity entity = em.find(DummyEntity.class, id);
            em.remove(entity);
        }
        em.flush();
        em.clear();

        deactivatePersistenceProvider();
    }

    protected void activatePersistenceProvider() {
        ClassLoader last = Thread.currentThread().getContextClassLoader();
        try {
            // needs context classloader for Hibernate to find the
            // META-INF/persistence.xml file
            Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
            PersistenceProviderFactory persistenceProviderFactory = Framework.getLocalService(PersistenceProviderFactory.class);
            persistenceProvider = persistenceProviderFactory.newProvider("nxtest");
            persistenceProvider.openPersistenceUnit();
        } finally {
            Thread.currentThread().setContextClassLoader(last);
        }
    }

    protected void deactivatePersistenceProvider() {
        if (persistenceProvider != null) {
            persistenceProvider.closePersistenceUnit();
            persistenceProvider = null;
        }
    }

    @Test
    public void testBase() throws Exception {
        EntityManager em = persistenceProvider.acquireEntityManager();
        DummyEntity entity = new DummyEntity("1");
        em.persist(entity);
        em.flush();
        em.clear();
        em.close();
    }

    @Test
    public void testAcquireTwiceInSameTx() throws Exception {
        EntityManager em;
        em = persistenceProvider.acquireEntityManager();
        em.persist(new DummyEntity("1"));
        em.flush();
        em.clear();
        em.close();
        em = persistenceProvider.acquireEntityManager();
        em.persist(new DummyEntity("2"));
        em.flush();
        em.clear();
        em.close();
    }

}