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              <h1>Testing Transactions</h1>
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                <p><em>Help us document this example! Click the blue pencil icon in the upper right to edit this page.</em></p>
<h2>Movie</h2>
<pre><code>package org.superbiz.injection.tx;

import javax.persistence.Entity;

@Entity
public class Movie {

    private String director;
    private String title;
    private int year;

    public Movie() {
    }

    public Movie(String director, String title, int year) {
        this.director = director;
        this.title = title;
        this.year = year;
    }

    public String getDirector() {
        return director;
    }

    public void setDirector(String director) {
        this.director = director;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public int getYear() {
        return year;
    }

    public void setYear(int year) {
        this.year = year;
    }

}
</code></pre>
<h2>Movies</h2>
<pre><code>package org.superbiz.injection.tx;

import javax.ejb.Stateful;
import javax.ejb.TransactionAttribute;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceContextType;
import javax.persistence.Query;
import java.util.List;

import static javax.ejb.TransactionAttributeType.MANDATORY;

//START SNIPPET: code
@Stateful(name = &quot;Movies&quot;)
@TransactionAttribute(MANDATORY)
public class Movies {

    @PersistenceContext(unitName = &quot;movie-unit&quot;, type = PersistenceContextType.TRANSACTION)
    private EntityManager entityManager;

    public void addMovie(Movie movie) throws Exception {
        entityManager.persist(movie);
    }

    public void deleteMovie(Movie movie) throws Exception {
        entityManager.remove(movie);
    }

    public List&lt;Movie&gt; getMovies() throws Exception {
        Query query = entityManager.createQuery(&quot;SELECT m from Movie as m&quot;);
        return query.getResultList();
    }
}
</code></pre>
<h2>persistence.xml</h2>
<pre><code>&lt;persistence xmlns=&quot;http://java.sun.com/xml/ns/persistence&quot; version=&quot;1.0&quot;&gt;

  &lt;persistence-unit name=&quot;movie-unit&quot;&gt;
    &lt;jta-data-source&gt;movieDatabase&lt;/jta-data-source&gt;
    &lt;non-jta-data-source&gt;movieDatabaseUnmanaged&lt;/non-jta-data-source&gt;
    &lt;class&gt;org.superbiz.injection.tx.Movie&lt;/class&gt;

    &lt;properties&gt;
      &lt;property name=&quot;openjpa.jdbc.SynchronizeMappings&quot; value=&quot;buildSchema(ForeignKeys=true)&quot;/&gt;
    &lt;/properties&gt;
  &lt;/persistence-unit&gt;
&lt;/persistence&gt;
</code></pre>
<h2>MoviesTest</h2>
<pre><code>package org.superbiz.injection.tx;

import junit.framework.TestCase;

import javax.ejb.EJB;
import javax.ejb.Stateless;
import javax.ejb.TransactionAttribute;
import javax.ejb.embeddable.EJBContainer;
import java.util.List;
import java.util.Properties;
import java.util.concurrent.Callable;

import static javax.ejb.TransactionAttributeType.REQUIRES_NEW;

/**
 * See the transaction-rollback example as it does the same thing
 * via UserTransaction and shows more techniques for rollback 
 */
//START SNIPPET: code
public class MoviesTest extends TestCase {

    @EJB
    private Movies movies;

    @EJB
    private Caller transactionalCaller;

    protected void setUp() throws Exception {
        final Properties p = new Properties();
        p.put(&quot;movieDatabase&quot;, &quot;new://Resource?type=DataSource&quot;);
        p.put(&quot;movieDatabase.JdbcDriver&quot;, &quot;org.hsqldb.jdbcDriver&quot;);
        p.put(&quot;movieDatabase.JdbcUrl&quot;, &quot;jdbc:hsqldb:mem:moviedb&quot;);

        EJBContainer.createEJBContainer(p).getContext().bind(&quot;inject&quot;, this);
    }

    private void doWork() throws Exception {

        movies.addMovie(new Movie(&quot;Quentin Tarantino&quot;, &quot;Reservoir Dogs&quot;, 1992));
        movies.addMovie(new Movie(&quot;Joel Coen&quot;, &quot;Fargo&quot;, 1996));
        movies.addMovie(new Movie(&quot;Joel Coen&quot;, &quot;The Big Lebowski&quot;, 1998));

        List&lt;Movie&gt; list = movies.getMovies();
        assertEquals(&quot;List.size()&quot;, 3, list.size());

        for (Movie movie : list) {
            movies.deleteMovie(movie);
        }

        assertEquals(&quot;Movies.getMovies()&quot;, 0, movies.getMovies().size());
    }

    public void testWithTransaction() throws Exception {
        transactionalCaller.call(new Callable() {
            public Object call() throws Exception {
                doWork();
                return null;
            }
        });
    }

    public void testWithoutTransaction() throws Exception {
        try {
            doWork();
            fail(&quot;The Movies bean should be using TransactionAttributeType.MANDATORY&quot;);
        } catch (javax.ejb.EJBTransactionRequiredException e) {
            // good, our Movies bean is using TransactionAttributeType.MANDATORY as we want
        }
    }


    public static interface Caller {
        public &lt;V&gt; V call(Callable&lt;V&gt; callable) throws Exception;
    }

    /**
     * This little bit of magic allows our test code to execute in
     * the scope of a container controlled transaction.
     */
    @Stateless
    @TransactionAttribute(REQUIRES_NEW)
    public static class TransactionBean implements Caller {

        public &lt;V&gt; V call(Callable&lt;V&gt; callable) throws Exception {
            return callable.call();
        }
    }
}
</code></pre>
<h1>Running</h1>
<pre><code>-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Running org.superbiz.injection.tx.MoviesTest
Apache OpenEJB 4.0.0-beta-1    build: 20111002-04:06
http://tomee.apache.org/
INFO - openejb.home = /Users/dblevins/examples/testing-transactions
INFO - openejb.base = /Users/dblevins/examples/testing-transactions
INFO - Using &#39;javax.ejb.embeddable.EJBContainer=true&#39;
INFO - Configuring Service(id=Default Security Service, type=SecurityService, provider-id=Default Security Service)
INFO - Configuring Service(id=Default Transaction Manager, type=TransactionManager, provider-id=Default Transaction Manager)
INFO - Configuring Service(id=movieDatabase, type=Resource, provider-id=Default JDBC Database)
INFO - Found EjbModule in classpath: /Users/dblevins/examples/testing-transactions/target/classes
INFO - Found EjbModule in classpath: /Users/dblevins/examples/testing-transactions/target/test-classes
INFO - Beginning load: /Users/dblevins/examples/testing-transactions/target/classes
INFO - Beginning load: /Users/dblevins/examples/testing-transactions/target/test-classes
INFO - Configuring enterprise application: /Users/dblevins/examples/testing-transactions
INFO - Configuring Service(id=Default Stateful Container, type=Container, provider-id=Default Stateful Container)
INFO - Auto-creating a container for bean Movies: Container(type=STATEFUL, id=Default Stateful Container)
INFO - Configuring Service(id=Default Stateless Container, type=Container, provider-id=Default Stateless Container)
INFO - Auto-creating a container for bean TransactionBean: Container(type=STATELESS, id=Default Stateless Container)
INFO - Configuring Service(id=Default Managed Container, type=Container, provider-id=Default Managed Container)
INFO - Auto-creating a container for bean org.superbiz.injection.tx.MoviesTest: Container(type=MANAGED, id=Default Managed Container)
INFO - Configuring PersistenceUnit(name=movie-unit)
INFO - Auto-creating a Resource with id &#39;movieDatabaseNonJta&#39; of type &#39;DataSource for &#39;movie-unit&#39;.
INFO - Configuring Service(id=movieDatabaseNonJta, type=Resource, provider-id=movieDatabase)
INFO - Adjusting PersistenceUnit movie-unit &lt;non-jta-data-source&gt; to Resource ID &#39;movieDatabaseNonJta&#39; from &#39;movieDatabaseUnmanaged&#39;
INFO - Enterprise application &quot;/Users/dblevins/examples/testing-transactions&quot; loaded.
INFO - Assembling app: /Users/dblevins/examples/testing-transactions
INFO - PersistenceUnit(name=movie-unit, provider=org.apache.openjpa.persistence.PersistenceProviderImpl) - provider time 406ms
INFO - Jndi(name=&quot;java:global/testing-transactions/Movies!org.superbiz.injection.tx.Movies&quot;)
INFO - Jndi(name=&quot;java:global/testing-transactions/Movies&quot;)
INFO - Jndi(name=&quot;java:global/testing-transactions/TransactionBean!org.superbiz.injection.tx.MoviesTest$Caller&quot;)
INFO - Jndi(name=&quot;java:global/testing-transactions/TransactionBean&quot;)
INFO - Jndi(name=&quot;java:global/EjbModule2036741132/org.superbiz.injection.tx.MoviesTest!org.superbiz.injection.tx.MoviesTest&quot;)
INFO - Jndi(name=&quot;java:global/EjbModule2036741132/org.superbiz.injection.tx.MoviesTest&quot;)
INFO - Created Ejb(deployment-id=Movies, ejb-name=Movies, container=Default Stateful Container)
INFO - Created Ejb(deployment-id=TransactionBean, ejb-name=TransactionBean, container=Default Stateless Container)
INFO - Created Ejb(deployment-id=org.superbiz.injection.tx.MoviesTest, ejb-name=org.superbiz.injection.tx.MoviesTest, container=Default Managed Container)
INFO - Started Ejb(deployment-id=Movies, ejb-name=Movies, container=Default Stateful Container)
INFO - Started Ejb(deployment-id=TransactionBean, ejb-name=TransactionBean, container=Default Stateless Container)
INFO - Started Ejb(deployment-id=org.superbiz.injection.tx.MoviesTest, ejb-name=org.superbiz.injection.tx.MoviesTest, container=Default Managed Container)
INFO - Deployed Application(path=/Users/dblevins/examples/testing-transactions)
INFO - EJBContainer already initialized.  Call ejbContainer.close() to allow reinitialization
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.403 sec

Results :

Tests run: 2, Failures: 0, Errors: 0, Skipped: 0
</code></pre>
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