JBoss Hibernate

[dstreev]

I followed the wiki page for JBoss-Hibernate and download the additional files as specified by the document. After getting it all configured and getting a successful deployment, when I use a service that uses Hibernate for persistence I get the following:

21:41:10,341 INFO [SessionContext] Generating Hibernate session for scoped bind
21:41:10,902 INFO [SessionContext] Generating Hibernate session for scoped bind
21:41:10,902 ERROR [LogInterceptor] RuntimeException:
java.lang.NullPointerException
at org.jboss.hibernate.session.SessionContext.registerSynch(SessionContext.java:244)
at org.jboss.hibernate.session.SessionContext.openSession(SessionContext.java:232)
at org.jboss.hibernate.session.SessionContext.prepareCall(SessionContext.java:117)
at org.jboss.hibernate.session.EjbInterceptor.invoke(EjbInterceptor.java:67)
at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstance
Interceptor.java:72)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:84)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:341)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:148)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:120)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:191)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.
java:122)
at org.jboss.ejb.StatelessSessionContainer.internalInvoke(StatelessSessionContainer.java:331
)


Can anyone help with this? Not really what version of the source was used to generate the jboss-hibernate.jar file in the wiki page, so I'm not sure if I missed something or if there still might be a problem with the jboss-hibernate code.

Any clues and/or help would be much appreciated.

[marc_mulzer]

I did everything as described, including the update of the jar, the har deploys fine. But then I get a different error:

java.lang.IllegalArgumentException: Unknown session scope for jndi name [java:/hibernate/SessionFactory]

Also, when I verify my jboss.xml, then the

<interceptor service="..." scope="..."/>

does not validate against jboss_3_2.dtd.
------------------------------------------------------------------------

Here my jboss.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.2//EN" "http://www.jboss.org/j2ee/dtd/jboss_3_2.dtd">

<jboss>
 <enterprise-beans>
 <session>
 <ejb-name>Event</ejb-name>
 <jndi-name>ejb/Event</jndi-name>
 </session>
 </enterprise-beans>

 <container-configurations>
 <container-configuration extends="Standard Stateless SessionBean">
 <container-name>Hibernate Stateless SessionBean</container-name>
 <call-logging>true</call-logging>
 <container-interceptors>
 <interceptor>org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor</interceptor>
 <interceptor>org.jboss.ejb.plugins.LogInterceptor</interceptor>
 <interceptor>org.jboss.ejb.plugins.SecurityInterceptor</interceptor>
 <!-- CMT -->
 <interceptor transaction="Container">org.jboss.ejb.plugins.TxInterceptorCMT</interceptor>
 <interceptor transaction="Container" metricsEnabled="true">org.jboss.ejb.plugins.MetricsInterceptor</interceptor>
 <interceptor transaction="Container">org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor</interceptor>
 <!-- BMT not feasible using Hibernate interceptor with 'transaction' scope!!!! -->
 <!-- Notice that the service name is the same as that used to define the MBean -->
 <interceptor service="jboss.har:service=Hibernate" scope="transaction">org.jboss.hibernate.session.EjbInterceptor</interceptor>
 </container-interceptors>
 </container-configuration>
</container-configurations>
</jboss>

________________________________________________
And here my hibernate-service.xml:

<mbean code="org.jboss.hibernate.jmx.Hibernate" name="jboss.har:service=Hibernate">
 <attribute name="DatasourceName">java:/DefaultDS</attribute>
 <attribute name="SessionFactoryName">java:/hibernate/SessionFactory</attribute>
 <attribute name="Dialect">net.sf.hibernate.dialect.HSQLDialect</attribute>
 <attribute name="CacheProviderClass">net.sf.hibernate.cache.HashtableCacheProvider</attribute>
 <attribute name="Hbm2ddlAuto">create-drop</attribute>
</mbean>

____________________________________________________

Here my ejb-jar.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">

<ejb-jar >

 <description>[CDATA[No Description.]]</description>
 <display-name>Generated by XDoclet</display-name>

 <enterprise-beans>

 <!-- Session Beans -->
 <session >
 <description>[CDATA[Description for Event]]</description>
 <display-name>Name for Event</display-name>

 <ejb-name>Event</ejb-name>

 <home>com.yankeezulu.flightlog.interfaces.EventHome</home>
 <remote>com.yankeezulu.flightlog.interfaces.Event</remote>
 <ejb-class>com.yankeezulu.flightlog.ejb.EventBean</ejb-class>
 <session-type>Stateless</session-type>
 <transaction-type>Container</transaction-type>

 </session>

 </enterprise-beans>

 <assembly-descriptor >
 <!-- transactions -->
 <container-transaction >
 <method >
 <ejb-name>Event</ejb-name>
 <method-name>*</method-name>
 </method>
 <trans-attribute>Required</trans-attribute>
 </container-transaction>

 <!-- finder transactions -->
 </assembly-descriptor>

</ejb-jar>

__________________________________________________________
And here the business method in my session EJB:

/**
 * Business method
 * @ejb.interface-method view-type = "remote"
 */
 public void createEvent(String title, Date date) {

 session = org.jboss.hibernate.session.SessionContext.getSession("java:/hibernate/SessionFactory");
 try {

 Transaction tx = session.beginTransaction();
 EventVO event = new EventVO();
 event.setTitle(title);
 event.setDate(date);
 session.save(event);
 tx.commit();
 session.close();
 }
 catch (HibernateException he){
 System.err.println(he.getMessage());
 }
 }

How did you configure it? Can you send me your ear file? [e-mail]

[aloubyansky]

We decided to discuss Hibernate integration issues here
http://forum.hibernate.org/viewforum.php?f=8&sid=74a08b0457b45bcfe449aea84187792c

Please, post there. Thanks.

[david.wade]

You almost got it right.

But you must reference the container configuration from your ejb in the jboss.xml.

<jboss>

 <enterprise-beans>

 <session>
 <ejb-name>MyFacadeManager</ejb-name>
 <local-jndi-name>MyFacadeManagerLocal</local-jndi-name>
 <configuration-name>Hibernate Stateless SessionBean</configuration-name>

 <method-attributes />
 </session>

 ....

I actually added that container configuration to standardjboss.xml to save repeating it in every ejb jar.