jboss3 ejb-local-ref from servlet

[miguel2]

Experts,

could anybody please give a short comment about if and if yes how it is possible to invoke EJBs from servlets via their local interfaces in jboss3/jetty.

I think there is a lot of speculation on this issue out there.

thanx,

Mige

[wklauser]

As far as my testing goes, this has always been possible with JBoss 3.0. The binding is a bit unexpected though, which might have stopped a few people from getting it working (including myself till 10 min. ago ;-)

All local homes seem to be bound as "local/<ejb-name>". So, if you have got a bean named CurrencyBean with a local home CurrencyHome, you would look it up like this:

InitialContext ic = new InitialContext();
CurrencyHome c = (CurrencyHome) ic.lookup("local/CurrencyBean");

Please note that there is no "java:" or "java:comp/env" or so involved here.

Kind regards, Wilfried

[saylor09]

You may also want to note that you can redefine the local interface JNDI name in jboss.xml with <local-jndi-name>. For example:


  <enterprise-beans>
    
      <ejb-name>Product</ejb-name>
      <local-jndi-name>product/ejb/local/Product</local-jndi-name>
    
  </enterprise-beans>



so instead of....

(ProductLocalHome)context.lookup("local/Product");


you can do....

(ProductLocalHome)context.lookup("product/ejb/local/Product");


This was not in the dtd. I'm not sure if it' still not there, but you should be able to use it.

[miguel2]

Two great answers !!

However, the following questions seem to be left open:

Using local-jndi-name do I need ejb-local-ref in my servlet ?

Should lookup via "local/Beanname" work without any reference in my servlet ?

(using jboss3/jetty from cvs)

Mige

[saylor09]

local-jndi-name will redefine the global jndi name. You can either use the global name or use a reference defined with ejb-local-ref. However, the last I know of, Jetty does not support <ejb-local-ref>. But this may have changed recently.