My question was the later. I could not find the behavior in the documentation.
Thanks, - Dan -----Original Message----- From: Ron Gallagher [mailto:[EMAIL PROTECTED] Sent: Monday, August 18, 2003 9:53 AM To: OJB Users List Subject: Re: Compound Primary Key foreign key references Dan -- Are you asking this question because you've tried this configuration and it doesn't work, or are you just confused as to how OJB will handle this situation? If the former, then please provide more info regarding the problems you're having. If the latter, then here's my explanation... Anytime ojb encounters a reference-descriptor, it matches up the foreignkey elements, one for one, with the primary key field-descriptors in the referenced class. This matching process pairs up foreignkey and field-descriptor elements in the same order that they appear in the repository. So, in your case, the property mypackage.ClassA::keyA will be matched up with the property mypackage.ClassB::firstKey, and the property mypackage.ClassA::keyB will be matched up with the property mypackage.ClassB::secondKey Ron Gallagher Atlanta, GA [EMAIL PROTECTED] > > From: [EMAIL PROTECTED] > Date: 2003/08/18 Mon AM 09:01:37 EDT > To: [EMAIL PROTECTED] > Subject: Compound Primary Key foreign key references > > All, > > From what I can tell, the repository.dtd is not sufficient to uniquely > reference an object with a compound primary key. I think I must be missing > something. In the contrived example below the foreign keys used to > reference class B are keyA and keyB. Unfortunately, the names of keyA and > keyB are NOT the same names inside classB. How do I configure refB to tell > it that keyA references classB.secondKey and that keyB references > classB.firstKey or vica-versa. I am a little unclear on how to make the > distinction explicit. Any help will be appreciated. > > - Dan > > <class-descriptor > class="mypackage.ClassA" > table="tableA" > > > <field-descriptor > name="id" > column="id" > jdbc-type="INTEGER" > primarykey="true" > /> > <field-descriptor > name="keyA" > column="keyA" > jdbc-type="INTEGER" > /> > <field-descriptor > name="keyB" > column="keyB" > jdbc-type="INTEGER" > /> > <reference-descriptor > name="refB" > class-ref="mypackage.ClassB" > > > <foreignkey field-ref="keyA"/> > <foreignkey field-ref="keyB"/> > </reference-descriptor> > </class-descriptor> > > > <class-descriptor > class="mypackage.ClassB" > table="tableB" > > > <field-descriptor > name="firstKey" > column="firstKey" > jdbc-type="INTEGER" > primarykey="true" > /> > <field-descriptor > name="secondKey" > column="secondKey" > jdbc-type="INTEGER" > primarykey="true" > /> > </class-descriptor> > > > __________________________________________________ > > Daniel B. Brown | WELLS FARGO BANK MINNESOTA, N.A. | > > Software Architect | http://www.wellsfargo.com | MAC N2702-011 | > > 9062 Old Annapolis Road | Columbia | MD | 21045-1951 | > > p: 410.884.2034 | f: 410.715.2325 | [EMAIL PROTECTED] > > | > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
