Hi all!
Last weekend I have developed two little ejbs. one entity bean
and one session bean.
I started with the entity bean. Once I had coded it I tested it and
everything was fine.
Then I wrote the session bean which is a fasade controller
to the entity bean.
I had the following two problems:
1.
Since the session bean needs the entity bean in order to work
the deployment descriptor looks something like (ejb-jar.xml):
<session>
...
<ejb-ref>
<ejb-ref-name>NewsEB</ejb-ref-name>
<ejb-ref-type>Entity</ejb-ref-type>
<home>net.highteq.ejbs.news.NewsEBHome</home>
<remote>net.highteq.ejbs.news.NewsEB</remote>
</ejb-ref>
</session>
This, however, will not work. The log files says: either add <ejb-link>
or modifiy jboss.xml. I tried <ejb-link> and it worked.
Unfortunally I was not able to find any documentation about what to set in
jboss.xml?
2.
After I had fixed the first problem I faced another problem:
The datasource was no longer available?
My jboss.xml has looked like this:
<jboss>
<resource-managers>
<resource-manager>
<res-name>PostgresDB</res-name>
<res-class>orb.jboss.ejb.deployment.JDBCResource</res-class>
<res-jndi-name>PostgresDB</res-jndi-name>
</resource-manager>
</resource-managers>
</jboss>
In fact the deployment descriptor must look something like the following:
<jboss>
<enterprise-beans>
<entity>
<ejb-name>NewsEB</ejb-name>
<jndi-name>NewsEB</jndi-name>
</entity>
<session>
<ejb-name>NewsController</ejb-name>
<jndi-name>NewsController</jndi-name>
</session>
</enterprise-beans>
<resource-managers>
<resource-manager>
<res-name>PostgresDB</res-name>
<res-class>orb.jboss.ejb.deployment.JDBCResource</res-class>
<res-jndi-name>PostgresDB</res-jndi-name>
</resource-manager>
</resource-managers>
</jboss>
Afterwards everything worked for me.
I know there is a "getting started" tutorial out there but it deals only with
session beans.
What about an entity bean tutorial? Anyone working on it?
If no one is working on such a tutorial I would like to write it :-)
Yours,
Lars
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