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@PersistenceContext is null in jboss7
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created by <a href="https://community.jboss.org/people/yunshi">yunshi tan</a> in <i>JBoss AS 7 Development</i> - <a href="https://community.jboss.org/message/759623#759623">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi all,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I am migrating jboss4.2.3 -> jboss7 and I am totally blocked by the probleme that @PersistenceContext  always returns me NULL in the EJB jars.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Here are the projects in my deployment :</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>deployment</p><p>-----------------------------</p><p>  - hibernate-ejb-1.jar</p><p>     | - src/main/java ... some entities and DAO</p><p>    | - src/main/resources</p><p>              | - META-INF</p><p>                    | - hibernate.cfg.xml</p><p>                    | - persistence.xml</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p> - seam2App.ear</p><p>     | - module1.jar</p><p>    | - module2.jar</p><p>     | - war1.war</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>     hibernate-ejb-1.jar offers some DAO functions for my seam2App.ear and other applications. <strong>However, in hibernate-ejb-1.jar, all the @PersistenceContext  EntityManager returns NULL.</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><strong>Here is the persistence.xml</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span><persistence xmlns="</span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence" target="_blank">http://java.sun.com/xml/ns/persistence</a><span>"</span></p><p><span>          xmlns:xsi="</span><a class="jive-link-external-small" href="http://www.w3.org/2001/XMLSchema-instance" target="_blank">http://www.w3.org/2001/XMLSchema-instance</a><span>"</span></p><p><span>          xsi:schemaLocation="</span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence" target="_blank">http://java.sun.com/xml/ns/persistence</a><span> </span><a class="jive-link-external-small" href="http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" target="_blank">http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd</a><span>"</span></p><p>          version="1.0"></p><p>               <persistence-unit name="xxx-unit" transaction-type="JTA"></p><p>        <provider>org.hibernate.ejb.HibernatePersistence</provider></p><p>                         <jta-data-source>java:/xxxxxDS</jta-data-source></p><p>                         <properties></p><p>                     <property name="hibernate.ejb.cfgfile" value="/META-INF/hibernate.cfg.xml"/></p><p>                    <property name="jboss.entity.manager.factory.jndi.name" value="java:jboss/EntityManagerFactories/xxx"/></p><p>                    <property name="hibernate.session_factory_name" value="java:jboss/hibernate/SessionFactoryxxx"/></p><p>                    <property name="jboss.as.jpa.providerModule" value="org.hibernate:3" /> </p><p>         </properties></p><p>          </persistence-unit></p><p></persistence></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>In the <strong>cosole</strong>, I have </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>12:15:49,752 INFO  [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-2) JNDI bindings for session bean named xxxDAOImpl in deployment unit deployment "xxxxxxx-SNAPSHOT.jar" are as follows:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>        java:global/xxxxxx-SNAPSHOT/xxxxxxDAOImpl!com.xxxx.dao.common.remotexxxxxxDAORemote</p><p>        java:app/xxxxxx-SNAPSHOT/xxxxxxDAOImpl!com.xxxxxx.dao.common.remote.xxxxxxDAORemote</p><p>        java:module/xxxxxxDAOImpl!com.xxxxxx.dao.common.remote.xxxxxxDAORemote</p><p>        java:jboss/exported/xxxxxx-SNAPSHOT/xxxxxxDAOImpl!com.xxxxxx.dao.common.remote.xxxxxxDAORemote</p><p>        java:global/xxxxxx-SNAPSHOT/xxxxxxDAOImpl!com.xxxxxx.dao.common.local.xxxxxxDAOLocal</p><p>        java:app/xxxxxx-SNAPSHOT/xxxxxxDAOImpl!com.xxxxxx.dao.common.local.xxxxxxDAOLocal</p><p>        java:module/xxxxxxDAOImpl!com.xxxxxx.dao.common.local.xxxxxxDAOLocal</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>In other applications who depend on hibernate-ejb-1.jar, I tried to get the Ejb like this:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>     context = new InitialContext();</p><p>     DAO dao=  (DAO ) context. lookup("java:global/xxxxxx-SNAPSHOT/xxxxxxDAOImpl!com.xxxxxx.dao.common.local.xxxxxxDAOLocal");</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>     </p><p><strong>DAO.java looks like this</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>@Stateless</p><p>public class DAOImpl implements DAOLocal, DAORemote{</p><p>  </p><p>    @PersistenceContext</p><p>    private EntityManager entityManager;</p><p>    </p><p>    </p><p>          public List<Bean> findAll() {</p><p>                    Query query = createNamedQuery(Bean.FIND_ALL);</p><p>                    if(query!=null)</p><p>                              return query.getResultList();</p><p>                    return null;</p><p>          }</p><p>}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>However, I have the NPE because @PersistenceContext  EntityManager entityManager  is always null.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The probleme is : </p></div>
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