No table name specified in ejb-jar.xml file

Question

Hi, I have an entity bean defined as follows:
<enterprise-beans>
<entity>
<display-name>SponsorEJB</display-name>
<ejb-name>SponsorEJB</ejb-name>
<home>com.ultradns.j2ee.components.sponsor.ejb.SponsorHome</home>
<remote>com.ultradns.j2ee.components.sponsor.ejb.Sponsor</remote>
<ejb-class>com.ultradns.j2ee.components.sponsor.ejb.SponsorEJB</ejb-class>
<persistence-type>Container</persistence-type>
<prim-key-class>java.lang.String</prim-key-class>
<reentrant>False</reentrant>
     <resource-ref>
          <res-ref-name>jdbc/jdbc/OracleDS</res-ref-name>
          <res-type>javax.sql.DataSource</res-type>
          <res-auth>Container</res-auth>
     </resource-ref>     
<cmp-version>2.x</cmp-version>
<abstract-schema-name>sponsor</abstract-schema-name>
<cmp-field>
<primkey-field>guid</primkey-field>
     <query>
          <query-method>
               <method-name>findAll</method-name>
               <method-params></method-params>
          </query-method>
          <ejb-ql>
               <![CDATA[ SELECT OBJECT(a) FROM sponsor AS a]]>
          </ejb-ql>
     </query>
</entity>
</enterprise-beans>
In the database, I want this entity bean refers to a table named "sponsor", but I could not specify the relation in the ejb-jar.xml file. So when I deployed this bean, it auto created a table called "SponsorEJB". Where is this name come from, from display-name or ejb-name field?
Basically, how can I specify a bean "SponsorEJB" referes to a table "sponsor"?
Thanks,

Answer 1

First thing, to stop OC4J auto-creating tables, edit the file %J2EE_HOME%/config/application.xml. Change the first orion-application tag so that one attribute says autocreate-tables="false"
The ejb-jar.xml file describes your EJB's to the container. It is not supposed to describe which table each entity bean maps too, as this is an implementation specific property, so would not be portable between databases. Therefore you have to configure the container to point an entity to a table. Sun uses the sun-j2ee-ri.xml file to do this, and this has to be included in the deployment.
OC4J however uses the file 'orion-ejb-jar.xml', and will generate this for you. Since you have already deployed your application, this will have already been generated. Go to the directory %J2EE_HOME%/application-deployments. There will be a directory corresponding to your application name. In there is a directory corresponding to your ejb module name, and in there is the 'orion-ejb-jar.xml' file. If you open this file, you will see the entity deployment tags, an example of one is below. Edit the tag so that the table attribute points to the table in your database (note that there is a data-source attribute as well, so make sure that this points to the correct schema). The example below points the EJB Emp to the table EMP:
<entity-deployment name="Emp" max-instances="10" location="Emp" wrapper="EmpHome_EntityHomeWrapper3" table="EMP" data-source="jdbc/rob9iDS" locking-mode="optimistic" update-changed-fields-only="true" min-instances-per-pk="0" max-instances-per-pk="50" disable-wrapper-cache="true">
Hope this helps,
Rob