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How does one map fields in a DomainObject base class?

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mystic

Post subject: How does one map fields in a DomainObject base class?

Posted: Wed Aug 26, 2009 5:27 pm

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Joined: Tue May 12, 2009 6:08 am
Posts: 92

How does one map fields in a DomainObject base class using annotations? I'd really like it if Hibernate could inherit the @Id, etc. annotations in all the subclasses, because DomainObject is really very good at defining a quick and dirty equals, as well as some convenience methods like isTransient and stuff like that. If nothing else, I need id and isActive on every domain object in the system, so it makes sense to have a base class for this. I obviously do not want to put @Entity on DomainObject, because this is not a subclass relationship.

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mystic

Post subject: Re: How does one map fields in a DomainObject base class?

Posted: Wed Aug 26, 2009 9:34 pm

Regular

Joined: Tue May 12, 2009 6:08 am
Posts: 92

Okay, this is what I have so far:

Code:

@MappedSuperclass
public abstract class DomainObject implements Serializable {

   /* Members */
   @Id
   @GeneratedValue
   protected Long id;

   @Column( name = "is_active" )
   protected boolean isActive = true;
...
}

I realized that using @MappedSuperclass will inherit these fields, which is great!

HOWEVER, now I have a problem with the name of the id that gets generated for SubClass (of DomainObject)