Lars Hoss wrote:
>
> 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?
See http://www.jboss.org/ejbref_howto.html for doc about
internal/external ejb references. What you need is an internal one, so
ejb-link is what you are looking for.
Sebastien
> 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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