Hib Search - annotation inheritance issues (classbridge)

dprpme · **Joined:** Fri Feb 07, 2014 4:58 pm **Posts:** 2

Hello,

Before anything else, just wanted to say Search is awesome, so thank you.

I'm having an issue with the @ClassBridge defined on an interface not inheriting to the implementing classes. I currently have a setup like the one below (simplified):

Code:

@ClassBridge(name="MY_BRIDGE",
      store=Store.YES,
      impl=MyChild.MyChildClassBridge.class)
public interface MyChild {
   public class MyChildClassBridge implements FieldBridge {

      @Override
      public void set(String name, Object value, Document document,
            LuceneOptions luceneOptions) {
         
         String fieldValue = ((MyChild) value).getConcatGroup();
         if(fieldValue == null){
            fieldValue = "";
         }

         org.apache.lucene.document.Field field = 
            new org.apache.lucene.document.Field( 
               name, fieldValue, luceneOptions.getStore(),
               luceneOptions.getIndex(), luceneOptions.getTermVector());

         field.setBoost(luceneOptions.getBoost());
         document.add(field);
      }
   }

   public String getConcatGroup();
}

@Entity
@Indexed
public class Pete implements MyChild{
   @Id   @GeneratedValue
   private long id;

   /**** .... simplified *****/

   public String getConcatGroup(){
      return "some string";
   }
}

Now I expected that the Pete class would inherit the ClassBridge defined on MyChild and thus I would see and index of the name "MY_BRIDGE". However when I reindex and inspect with Luke it doesn't show up. If I move the ClassBridge from the interface (MyChild) and define it directly on the Pete class then the index shows up as expected. Scouring the interwebs I only came upon the following:

https://hibernate.atlassian.net/browse/HSEARCH-249 (6 years old, unresolved)
http://stackoverflow.com/questions/17116839/how-does-hibernate-search-handle-annotations-inherited-from-a-superclass
http://stackoverflow.com/questions/1413558/hibernate-search-annotations-not-inherited

(contributions from sirs Emmanuel, Sanne, and Hardy) which also pointed to some hibernate forum posts.

Emmanuel (in the JIRA) and a SO poster seemed to indicate that the inheritance should work. Is this not the case, does it only work on actual super classes and not interfaces?, or do I have something incorrectly configured?

Many thanks in advance for any help.

sanne.grinovero · **Posted:** Sun Feb 09, 2014 1:38 pm

Hi,
you're right it won't inherit from an interface: since you can have multiple interfaces that would introduce ambiguity.
It should however work to define you ClassBridge on a parent class.

And thanks for the kind words!

dprpme · **Joined:** Fri Feb 07, 2014 4:58 pm **Posts:** 2

Hi Sanne,

Ok, understandable, I can live with that. I've also confirmed that it does work when inheriting from a class.

And you've got to give credit where credit is due man :).

Thanks again for the help.