[jboss-user] [EJB/JBoss] - Re: persist entity ignores the

[sfisque]

posting this so that anyone else searching on this will find what i found:

if you have an object with a composite key object, e.g:


  | @Entity
  | @IdClass( ThingPK.class )
  | @Table( name="Thing" )
  | public class Thing
  | implements Serializable
  | {
  |     @Id
  |     private String keyOne;
  | 
  |     @Id
  |     private String keyTwo;
  | 
  |     @Column( name="value_one" )
  |     private String valueOne;
  | 
  |     // getter/setters omitted for brevity
  | }
  | 
  | public class ThingPK
  | implements Serializable
  | {
  |     @Column( name="key_one" )
  |     private String keyOne;
  | 
  |     @Column( name="key_two" )
  |     private String keyTwo;
  | 
  |     // getter/setters omitted for brevity
  | }
  | 

what ended up causing the above problem is that i had annotated the @Columns in the entity object (Thing), instead of instrumenting the PK class (ThingPK),  once i corrected it (to appear like the above), the column name was properly injected and it worked fine.  all of the example code i've seen never indicates that the @Column instrumentation is supposed to go into the PK class and not the entity class.

caveat emptor.

== stanton


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