Help:EJB3 entityManagerFactory or entityManager required

[ivan.fontanals]

Hello,
I've spent a week looking for an answer to my problem, and I have tried a lot of different Spring configurations, but finally I always get the same error message when I execute my EJB3 remote method.

I'm using JPA with Hibernate 3 for my persistence layer, EJB3 for the services and all of this configured with Spring in a JBoss 4 AS enviroment. The problem, I think, is that no transaction exists, so when I tried to use my DAO from the EJB3 method, I get this error:

javax.ejb.EJBException: java.lang.IllegalArgumentException: entityManagerFactory or entityManager is required
	at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:63)
	at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
	at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:191)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
	at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
	at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
	at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
	at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:106)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
	at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
	at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
	at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
	at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:278)
	at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106)
	at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82)
	at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:734)
	at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:560)
	at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:369)
	at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:165)

When I execute my services jUnit tests, all its working OK. To do that, my jUnit extends from AbstractJpaTests and I execute my service method like a simple POJO. My applicationContext in this mode is the following:

jUnit ApplicationContext.xml to do testing:

<bean id="jpaAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
             <property name="database" value="ORACLE"/>
	<property name="showSql" value="true"/>
</bean>

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
	<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
	<property name="url" value="jdbc:oracle:thin:@trinidad:1521:D03"/>
		<property name="username" value="www"/>
		<property name="password" value="www"/>
</bean>

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
	<property name="dataSource" ref="dataSource"/>
	<property name="jpaVendorAdapter" ref="jpaAdapter"/>
	<property name="loadTimeWeaver">
     <bean class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver"/>
 	</property>
</bean>

<!-- Jpa Transaction Manager -->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
 </bean>
	
<bean id="transactionInterceptor"
      class="org.springframework.transaction.interceptor.TransactionInterceptor">
	  <property name="transactionManager" ref="transactionManager" />
	  <property name="transactionAttributeSource">
 <bean class="org.springframework.transaction.annotation.AnnotationTransactionAttributeSource" />
  </property>
</bean>

<bean id="daoAccessor" class="com.famasystems.dao.DAOAccessor" factory-method="getInstance">
	<property name="factoryDao"  ref="jpaFactoryDao"/>
</bean>
	
<bean id="jpaFactoryDao" class="com.famasystems.dao.jpa.FamaJpaFactoryDAO" autowire="default">
	<property name="entityManagerFactory"  ref="entityManagerFactory"/>
</bean>

All the DAOs extends from JpaDaoSupport.
My service ( Stateless EJB3 ) is:

@Stateless(name="ServicioCallejero")
@Transactional
@TransactionAttribute( TransactionAttributeType.REQUIRED )
public class CallejeroBean implements CallejeroLocalBean,CallejeroRemoteBean {
  
	public static final String LOCAL_JNDI_NNAME =  "ServicioCallejero/local";
	public static final String REMOTE_JNDI_NNAME =  "ServicioCallejero/remote";
	protected FamaFactoryDAO factoryDao = DAOAccessor.getInstance().getFactoryDao();
	
	private CallejeroFactoryDAO callejeroDao ;
	
	@PostConstruct
	public void initialize() {
		callejeroDao = factoryDao.getCallejeroFactoryDAO();
		}
	
	@Transactional
	public void savePais( Pais  pais ) {
		PaisDAO dao = callejeroDao.getPaisDAO();
		dao.save( pais );
		dao.flush();
	}
}

When I execute the line PaisDAO dao = callejeroDao.getPaisDAO();, my DAO, that has been previously injected with the entityManagerFactory from Spring,
tries to start a transacational EntityManager, but is here where I'm always getting a null. I've checked that my entityManagerFactory is available and is not null,
but the problem is later, when I execute the line 4 from the code below.

1: protected void initJpaDao( JpaDaoSupport jpaDao ) {
2:		jpaDao.setEntityManagerFactory( entityManagerFactory );
3:		EntityManager em = EntityManagerFactoryUtils.getTransactionalEntityManager( entityManagerFactory ); //--> This always return null, but not in my unitTests!!
4:		jpaDao.setEntityManager( em );
5: }

The ApplicationContext used in my service:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:jee="http://www.springframework.org/schema/jee"
    xmlns:util="http://www.springframework.org/schema/util"
    xsi:schemaLocation="
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
    http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.0.xsd">

	
	<bean id="jpaAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
		<property name="database" value="ORACLE"/>
		<property name="showSql" value="true"/>
	</bean>

	
	 <jee:jndi-lookup id="dataSource" jndi-name="java:/famaDB"/>
	
	
	<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
		<property name="dataSource" ref="dataSource"/>
		<property name="persistenceUnitName" value="fama" />
		<property name="jpaVendorAdapter" ref="jpaAdapter" />
	</bean>

	
	<!-- Jpa Transaction Manager -->
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>
       
	<bean id="daoAccessor" class="com.famasystems.dao.DAOAccessor" factory-method="getInstance">
		<property name="factoryDao"  ref="jpaFactoryDao"/>
	</bean>
	
	
	<bean id="jpaFactoryDao" class="com.famasystems.dao.jpa.FamaJpaFactoryDAO" autowire="default">
		<property name="entityManagerFactory"  ref="entityManagerFactory"/>
	</bean>

  <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>
  <tx:annotation-driven/>
    
</beans>

My pesistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
    http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
	version="1.0">

	<persistence-unit name="fama" transaction-type="RESOURCE_LOCAL">
		<provider>org.hibernate.ejb.HibernatePersistence</provider>

		<!--  CALLEJERO -->
		<class>com.famasystems.domain.callejero.Municipio</class>
		<class>com.famasystems.domain.callejero.Localidad</class>
		<class>com.famasystems.domain.callejero.TipoVia</class>
		<class>com.famasystems.domain.callejero.Pais</class>
		<class>
			com.famasystems.domain.callejero.ComunidadAutonoma
		</class>
		<class>com.famasystems.domain.callejero.Via</class>
		<class>com.famasystems.domain.callejero.Provincia</class>

		</properties>
	</persistence-unit>
</persistence>

Please, could somebody tell me what I'm doing wrong? Any clue will be really appreciated!

Thank you very much in advance!

Bests regards!

Ivan Fontanals

[ivan.fontanals]

Hi,
I have finally made it work, but with a JTA transaction.

The error was in the creation of the EntityManager, because I was expecting to get a correct instance with the method EntityManagerFactoryUtils.getTransactionalEntityMa nager( entityManagerFactory ), but in the case the EntityManager was null, now I'm creating a new one with the method EntityManagerFactory.createEntityManager();.

My application Context has been modified too. Now I have the following configuration:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:jee="http://www.springframework.org/schema/jee"
    xmlns:util="http://www.springframework.org/schema/util"
    xsi:schemaLocation="
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
    http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.0.xsd">
	
	<bean id="jpaAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
		<property name="database" value="ORACLE"/>
		<property name="showSql" value="true"/>
	</bean>

	
	 <jee:jndi-lookup id="dataSource" jndi-name="java:/famaDB"/>
	 
	<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
		<property name="dataSource" ref="dataSource"/>
		<property name="persistenceUnitName" value="fama" />
		<property name="jpaVendorAdapter" ref="jpaAdapter" />
		<property name="jpaProperties">
			<props>
					<prop key="show_sql">true</prop>
					<prop key="hibernate.current_session_context_class">jta</prop>
					<prop key="hibernate.session_factory_name">famaSessionFactory</prop>
					<prop key="hibernate.transaction.factory_class">org.hibernate.transaction.CMTTransactionFactory</prop>
					<prop key="hibernate.transaction.manager_lookup_class">org.hibernate.transaction.JBossTransactionManagerLookup</prop>
					</props>
		</property>  
	</bean>
	
	 <!-- Transaction manager for a single Hibernate SessionFactory (alternative to JTA) -->
	<bean id="transactionManager"  class="org.springframework.transaction.jta.JtaTransactionManager"/>

	
	<bean id="daoAccessor" class="com.famasystems.dao.DAOAccessor" factory-method="getInstance">
		<property name="factoryDao"  ref="jpaFactoryDao"/>
	</bean>
	
	
	<bean id="jpaFactoryDao" class="com.famasystems.dao.jpa.FamaJpaFactoryDAO" autowire="default">
		<property name="entityManagerFactory"  ref="entityManagerFactory"/>
	</bean>

</beans>

I hope this thread could help someone! I really have lost a lot of time.

Thank you all!

Ivan

[tirzaman]

Ivan, is your Stateless EJB 3 injected in any of your components (a controller, etc) ? I'm having a tough time trying to inject a Stateless EJB 3 instance into a Spring controller (I'm using JBoss 4.2.0) as I'm getting an error which states something like "EJB home [...] has no no-arg create() method". I used the normal Spring JNDI locator ("org.springframework.ejb.access.SimpleRemoteState lessSessionProxyFactoryBean") and I've also tried some of the "jee:local-slsb" tags as well but with no success.

Any help would be appreciated.

Thanks.