Decouple coded name from JNDI-Name (JBoss3.0 / Postgres)

[stefankuhn]

Hi!

I have set up a data source with a postgres-service.xml file.
When i use the JNDI-name in the postgres-service.xml file, in the
Session Bean code (coded name) for the lookup() method, the data source
is fund (i.e. i don' get an naming exception).

However i would like to to decouple the "coded name" (used in the session bean
from the JNDI-name.

I have succeded doing this for the session bean i use.
The name of the session bean is "LogInEJB". That name listed in the deployment
descriptor for the bean (in ejb-jar.xml).

In the file jboss.xml the session bean is given the JNDI-name "ejb/Login".

In a JSP-file (packed in a WAR-file) i use the coded name ejb/UserLogin.
This coded name is "mapped" tho the JNDI-name "ejb/Login" in the file jboss-web.xml.

I.e. the file jboss-web.xml is the glue between the coded name in the JSP-file
(wich i never want to change) an the actual JNDI-name of the session bean.

This works fine!

How do i achieve this wit a datasource?

I have tried this:

1. I set up a datasource in a postgres-service.xml file giving it the JNDI-name "jdbc/UKontakt"
2. In the session bean code however i use the "coded name" java:comp/env/jdbc/UKontaktDB
3. I tried to use the file jboss.xml as the glue between the coded name and the JNDI-name like this:
<resource-managers>
<resource-manager res-class="javax.sql.DataSource">
<res-name>jdbc/UKontaktDB</res-name>
<res-jndi-name>jdbc/UKontakt</res-jndi-name>
</resource-manager>
</resource-managers>

The reason for trying it this way, ist that "SUN", using the deploytool of the ref imp., puts
the "glue" in the sun-j2ee-ri.xml file in the EAR archive (not down in the "Bean archive" jar),
that is one level up in the archv hiearchy.

Unfortenatly this doesn't work.

I would appreciate any help on this on.
Rgds.
Stefan

[tbfmicke]

Do something like this in your ejb-jar.xml.

<ejb-name>YourEJBName</ejb-name>
..........
<resource-ref>

DataSource for Contacts

<res-ref-name>jdbc/UKontaktDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>

And then in the jboss.xml

<?xml version="1.0"?>
<!DOCTYPE jboss PUBLIC
"-//JBoss//DTD JBOSS 3.0//EN"
"http://www.jboss.org/j2ee/dtd/jboss_3_0.dtd">

<enterprise-beans>

<ejb-name>YourEJBName</ejb-name>
<resource-ref>
<res-ref-name>jdbc/UKontaktDB</res-ref-name>
<resource-name>java:/jdbc/UKontakt</resource-name>
</resource-ref>

</enterprise-beans>

[stefankuhn]

Hej Micke!

(ok i'l continue in english ;-)

Thanks a lot for your help!
Your solution works fine.

After posting my question i tried some other solutions.

This one works too:
No changes wer made in the jboss.xml. This file only gives my session bean an JNDI name as:

<ejb-name>LogInEJB</ejb-name>
<jndi-name>ejb/Login</jndi-name>


In the file ejb-jar.xml you only have to state the JNDI name for the used coded name as ...:

<ejb-name>YourEJBName</ejb-name>
...
<resource-ref>
<res-ref-name>jdbc/UKontaktDB</res-ref-name>
<jndi-name>jdbc/UKontakt</jndi-name> <!-- ... as in this line -->
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
...

Here is a fragment of the postgres-service.xml just in order to make this explanation complete

...
<!--embedded mbean-->


<!-- ========== Set the JndiName ======================= -->
jdbc/UKontakt <!-- The JNDI name used in the ejb-jar.xml! -->



Best regards
Stefan Kühn