Problem mapping a 1:M relationship between two entity EJBs w/ a compound PK

Question

I am having trouble trying to implement a 1:M relationship in OC4J 9.0.3 between two EJB2.0 entity beans using an EJBQL query. I have an ApplicantEJB, which contains a collection of phone numbers. The applicant table in the database has one primary key, applicant_id. The applicant_phones database table has a compound primary key--applicant_id and phone_type_id--so I have implemented a custom PK class to represent this, PhonePK. I have implemented a findByNameAndPhone method in my ejb-jar.xml file with the following syntax:
SELECT object(a) FROM applicants a, applicant_phones p where a.applicantID = p.applicantID and a.name = ?1 and p.phoneNumber = ?2
If I deploy this, Orion/OC4J translates the query in the orion-ejb-jar.xml with an incorrect reference to the applicant_phones.applicant_id column:
SELECT a.applicant_id FROM applicants a , applicant_phones p WHERE ((a.applicant_id = p.applicantID ) AND (a.name = ?) AND (p.phone_number = ? ))
I must have something wrong with my ApplicantEJB and PhoneEJB primary key mappings in my orion-ejb-jar.xml file, but I have tried many different combinations of values and keep getting them overwritten by the container with each deployment. Why is Orion/OC4J defaulting the applicant_id reference Long postings are being truncated to ~1 kB at this time.

Answer 1

Sure. Here's the <entity-deployment> for my applicant entity:
<entity-deployment name="ApplicantEntityEJB" location="ApplicantEntityEJB" table="applicants" data-source="java:/OracleDS">
<primkey-mapping>
<cmp-field-mapping name="applicantID" persistence-name="applicant_id"/>
</primkey-mapping>
<cmp-field-mapping name="name" persistence-name="name"/>
<cmp-field-mapping name="phones">
<collection-mapping table="applicant_phones">
<primkey-mapping>
<cmp-field-mapping name="applicantID">
<entity-ref home="ApplicantEntityEJB">
<cmp-field-mapping name="applicantID" persistence-name="applicant_id"/>
</entity-ref>
</cmp-field-mapping>
</primkey-mapping>
<value-mapping type="test.entity.PhoneEntity">
<cmp-field-mapping>
<entity-ref home="PhoneEntityEJB">
<cmp-field-mapping>
<fields>
<cmp-field-mapping name="phoneTypeID" persistence-name="phone_type_id"/>
<cmp-field-mapping name="applicantID" persistence-name="app[i]Long postings are being truncated to ~1 kB at this time.