Problem with resource-mapping

[hdmonty]

Hi,

this is in my SessionBean:

(...)
@Resource(name="myDB", mappedName="java:/MyDefaultDS")
DataSource dataSource;
(...)

I deploy this in an ear-File, that looks like this:

- myBean.ear
 myJar.jar
 - META-INF
 application.xml

In my server/default/deploy-Folder is an oracle-ds.xml-File with following Content:

(..)
<local-tx-datasource>
 <jndi-name>MyDefaultDS</jndi-name>
(...)
<local-tx-datasource>
 <jndi-name>TheOtherDS</jndi-name>
(...)

Now, I have an application that shall uses the 'TheOtherDS'. I can use a DeploymentDescriptor for each Bean but I would like to say it in one File for all:
"Please use for the resource "myDB" the global Name "java:/TheOtherDS".
Is this possible?

[waynebaylor]

do you mean you want to use the same deployment descriptor for each bean, or that you want the beans to have the same code and just change the descriptor?

[hdmonty]

I mean that the Resource-name('myDB') is mapped on a datasource ear-wide. First I thought you can make this in a jboss-app.xml or applikation.xml like you can do that in a jboss-web.xml but that doesnt work.

My problem is, I would like to avoid to build a deployment descriptor for twenty or more beans in an applikation. With my beans I want to make up reusable code. So I decided, that every datasource gets the name 'myDB' and is mapped to the global jndi-name 'java:/MyDefaultDS'. Now I have the problem that more than one applikation is deployed on a server with different databases. I can manage this with a deployment descriptor in each bean but that is to complicated.

I hope the problem is more perspicuous even if my english is a disaster.

[waynebaylor]

i would make each bean that needs a datasourse use a local jndi lookup instead of a global one. since you only have one jar you will only need one ejb-jar.xml and one jboss.xml.

doing it this way you can keep your bean code the same, for example all lookups could be:

DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/MyDS");

then in the jboss.xml you can map the lookup to the proper data source on a per bean basis.

[hdmonty]

How does look the mapping in a jboss.xml and ejb-jar.xml?