search : NullPointerException in getIdentifierName

G. S. · **Joined:** Fri Feb 05, 2010 10:54 am **Posts:** 28

I've a NullPointerException :

Code:

Exception in thread "Main Thread" java.lang.NullPointerException
   at org.hibernate.search.engine.DocumentBuilderIndexedEntity.getIdentifierName(DocumentBuilderIndexedEntity.java:512)
   at org.hibernate.search.engine.ObjectLoaderHelper.initializeObjects(ObjectLoaderHelper.java:50)
   at org.hibernate.search.engine.QueryLoader.load(QueryLoader.java:42)
   at org.hibernate.search.query.FullTextQueryImpl.list(FullTextQueryImpl.java:284)
   at org.hibernate.search.jpa.impl.FullTextQueryImpl.getResultList(FullTextQueryImpl.java:92)
   at xxx.GenericSearchDaoImpl.searchLucene(GenericSearchDaoImpl.java:56)
   at xxx.GenericSearchManagerMetierImpl.searchLuceneQuery(GenericSearchManagerMetierImpl.java:41)
   at xxx.xxxSearchManagerMetierTest.main(xxxSearchManagerMetierTest.java:36

I use a ProvidedId with FieldBridg because of composed Id

But TwoWayStringBridge use is correctly impl.

I use a PrimaryKey Class xxxPK

Code:

@ProvidedId(bridge=@FieldBridge(impl=xxx_ProvidedId_Bridge.class))

I look HS sources quickly in SVN but it doesn't give me an answer to revise my code.

thx for help.

G.S.

hardy.ferentschik · **Posted:** Sat Mar 20, 2010 10:56 am

You misunderstand the meaning of @ProvidedId. @ProvidedId got to for example make JBossCache searchable. It is used if you are not working with persistent entities. If you have an hibernate/jpa managed entity just place an additional @FieldBridge annotation on the property which is annotated with @Id or @DocumentId.

--Hardy

G. S. · **Joined:** Fri Feb 05, 2010 10:54 am **Posts:** 28

Ok, i'll try
Thx.

G. S.

G. S. · **Joined:** Fri Feb 05, 2010 10:54 am **Posts:** 28

No exception generate during process but no results return...

getResultSize() give me 15
getResultList().size() give me 0

I check id return by lucene from my bridge trace.
I check in my DB and data exist

getResultList() return nothing...

Debug :

Code:

List<T> resultList = q.getResultList();

i could see that resultList.elementData = [null, null, null, null, null, null, null, null, null, null, null, null, null, null, null]

hardy.ferentschik · **Posted:** Fri Mar 26, 2010 10:41 am

Can you post your annotated entities and the search query you are trying to execute? It i hard to diagnose the problem when you only provide pieces at the time ;-)

--Hardy

G. S. · **Joined:** Fri Feb 05, 2010 10:54 am **Posts:** 28

Entity :

Code:

@Indexed
@AnalyzerDefs({ 
   @AnalyzerDef(name="standardStopWords",
         tokenizer=
            @TokenizerDef(factory = StandardTokenizerFactory.class),
         filters = {
            @TokenFilterDef(factory = LowerCaseFilterFactory.class),
            @TokenFilterDef(factory = ISOLatin1AccentFilterFactory.class),
            @TokenFilterDef(factory = StopFilterFactory.class,
                  params={
                     @Parameter(name="words", value="StopWords.txt"),
                     @Parameter(name="ignoreCase", value="true")
                  }
            )
         }
   )
})
@Entity
public class Demande extends DemandeEntity {

Superclass :

Code:

@MappedSuperclass
public class DemandeEntity implements Serializable {

   @FieldBridge(impl=Demande_DocumentId_Bridge.class)
   @DocumentId
   @IndexedEmbedded
   private DemandePK demandePK;

Bridge :

Code:

public class Demande_DocumentId_Bridge implements TwoWayStringBridge {

   public Object stringToObject(String arg0) {
      String[] tab = arg0.split("þ");
      return new DemandePK(tab[0],tab[1],tab[2]);
   }

   public String objectToString(Object arg0) {
      DemandePK d = (DemandePK)arg0;
      return d.getUiPhar()+"þ"+d.getRdes()+"þ"+d.getTypeDem();
   }
}

TestClass :

Code:

public static void main(String[] args) {
      
      ClassPathXmlApplicationContext appContext = new ClassPathXmlApplicationContext("META-INF/PostGreSQL-applicationContext.xml");
      GenericSearchManagerMetier demandeSearchManagerMetier = (GenericSearchManagerMetier) appContext.getBean("demandeSearchManagerMetier");
      
      String rqt = "+text:jean +text:francois";
      BeanLuceneQuery beanLuceneQuery = new BeanLuceneQuery(rqt);   
      BeanResultats br = null;
      
      try {
         br = demandeSearchManagerMetier.searchLuceneQuery(beanLuceneQuery,0,15);
      } catch (NegativeOrNullInteger e) {
         e.printStackTrace();
      }
      
      System.out.print("Nb total : "+br.getNbTotalResults()+"\n");
      System.out.print("Nb Résultats : "+br.getResults().size()+"\n");
      
   }

Lucene part of precess is alright !
Primary keys DemandePK generated by HS just before requesting DB are alright

but no return...

br.getNbTotalResults() return 16
but
br.getResults().size() return 0

Beans are correctly implemented.
I traced return of :

Code:

List<T> resultList = q.getResultList();

but list size = 0

stdout :

Code:

Hibernate: select this_ (..xxx..)  from Demande this_ where ((this_.RDES, this_.TYPE_DEM, this_.UI_PHAR) in ((?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?), (?, ?, ?)))
Nb total : 16
Nb Résultats : 0

i see no problem in my code...
thx for help.

G. S.

sanne.grinovero · **Posted:** Fri Mar 26, 2010 2:38 pm

It looks like there's a mismatch while creating the PK of your entity, and then it doesn't find the matching values in the DB.

I don't see how you mapped the demandePK field as primary key of your entity?

I would suggest you to write a simple test loading an entity from the database by primary key, and build this primary key using the stringToObject method from your bridge, to verify Hibernate can load this and the bridge is parsing your string correctly.

something like

Code:

Demande_DocumentId_Bridge bridge = new Demande_DocumentId_Bridge();
DemandePK demandePK = (DemandePK) bridge.stringToObject( "Test using a valid String here" );
Demande demande = entityManager.load(Demande.class, demandePK);
assert demande != null;

this has to work and verifies your mapping the the bridge, when doing a Lucene query it will load entities using the same bridge.

G. S. · **Joined:** Fri Feb 05, 2010 10:54 am **Posts:** 28

If it's that : shame on me.

I agree with your rational. Will see on Monday.

Thanks.
G. S.

G. S. · **Joined:** Fri Feb 05, 2010 10:54 am **Posts:** 28

I tested the bridge. it's alright.
Problem comes from elsewhere..

I think that it's provided by HS code. I don't know where.
If anyone see a solution i'll make also a JIRA request.

Thx for help.

G. S.

G. S. · **Joined:** Fri Feb 05, 2010 10:54 am **Posts:** 28

I made a JIRA request.

http://opensource.atlassian.com/project ... SEARCH-479

I'm creating a test project with same condition to remake bug and transmit to hibernate team

sanne.grinovero · **Posted:** Mon Mar 29, 2010 5:50 am

thank you, a test is definitely useful to understand this.

G. S. · **Joined:** Fri Feb 05, 2010 10:54 am **Posts:** 28

Clearly HS have a problem.
I make the simplest test project and i have no return when result size is upper than 1 !
Test Project is up.