java:comp NameSpace in EJB 3.0

[tshuynh]

Hi

I am using JBoss 4.0.4GA with EJB 3.0 and having a problem of looking up a EJB reference defined in jboss.xml using

ctx.lookup("java:comp/env/ejb/MyEJB");

When I used the JBoss MBean service JNDIView, I recon that all the EJBs version 3.0 don't have a java:comp namespace section. Only EJBs version 2.X have it.

Is it normal that EJBs 3.0 don't have that namespace anymore?

Thank you.

[bill.burke]

we changed the ENC implementation for EJB3 to be ThreadLocal based instead of keyed by classloader. We can't change the implementation for java:comp for JBoss 4, so there is a new java:comp namespace for now:

"java:comp.ejb3"


You can get this as a constant via org.jboss.ejb3.Container.ENC_CTX_NAME

we'll change the value of this constant back to java:comp for JBoss 5.

[tshuynh]

Thanks for your quick reply.

The question now is how to add a EJB Ref to that namespace (java:comp.ejb3). I have 2 EJBs: myEjb1 and myEjb2. The myEjb1 has a ref to myEJB2 like this:

<?xml version="1.0" encoding="UTF-8"?>
<jboss xmlns="http://java.sun.com/xml/ns/javaee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://www.jboss.org/j2ee/schema/jboss_5_0.xsd"
 version="3.0">

 <enterprise-beans>
 <session>
 <ejb-name>MyBean1</ejb-name>
 <local-jndi-name>ejb/myEJB1</local-jndi-name>
 <ejb-local-ref>
 <ejb-ref-name>ejb/myEJB2</ejb-ref-name>
 <local-jndi-name>ejb/myEJB2</local-jndi-name>
 </ejb-local-ref>
 </session>
 </enterprise-beans>
 <resource-managers></resource-managers>
</jboss>

And the MyBean2 binds to the JNDI name 'ejb/myEJB2'.
When I deploy both EJBs in a EAR file to JBoss 4.0.4GA/EJB3.0, I get the exception:

javax.naming.NamingException: Could not bind statless proxy with ejb name MyBean1 into JNDI under jndiName: /ejb/myEJB2 [Root exception is javax.naming.NameAlreadyBoundException]

And in the JNDIView, it shows that the MyBean2 was already bound to 'ejb/myEJB2'.

I don't understand why.

Thank you