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From "Guillaume Chauvet (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (OPENJPA-2274) Annotations & interface methods
Date Mon, 14 Oct 2013 13:12:42 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-2274?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Guillaume Chauvet closed OPENJPA-2274.
--------------------------------------

    Resolution: Not A Problem

http://stackoverflow.com/questions/4204868/jpa-doesnt-support-interfaces-well-implications

> Annotations & interface methods
> -------------------------------
>
>                 Key: OPENJPA-2274
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2274
>             Project: OpenJPA
>          Issue Type: Improvement
>            Reporter: Guillaume Chauvet
>
> Dear OpenJPA team,
> I tested a peculiar use of annotations on methods declared into an interface :
> public interface EntityHeader {
>     public long getId();
> }
> public interface EntityHistorizable<E extends EntityHeader> {
> /* .... other methods ....*/
>     @PostLoad
>     public void postLoad();
>     
>     @PrePersist
>     public void prePersist();
> }
> public class Task implements Serializable, EntityHistorizable<Task>, EntityHeader
{
> /* .... Implementations .... */
>     @Override
>     public void postLoad() {
> 	System.out.println("postLoad");
>     }
>     @Override
>     public void prePersist() {
> 	System.out.println("prePersist");
>     }
> }
> When I perform a persist/find operation on the "Task" entity, OpenJPA don't execute postLoad/prePersist
methods because annotations are applied in the interface. I don't know if it's a good practice,
but it will be useful in the case who want to provide a "pattern" interface, for example.



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