[Hibernate Search] Lucene event listener not initialized

fabreax · **Posted:** Wed Apr 25, 2007 10:40 am

Hello,

I'm French, so sorry for my english.

I try to use Hibernate Search, that's my code :

Code:

s = sessionFactory.openSession();
         
FullTextSession fullTextSession = Search.createFullTextSession(s);
         
QueryParser parser = new QueryParser("title", new StopAnalyzer() );

org.apache.lucene.search.Query luceneQuery = null;
try {
    luceneQuery = parser.parse( "nom:f" );
} catch (ParseException e) {
    e.printStackTrace();
}

org.hibernate.Query fullTextQuery = fullTextSession.createFullTextQuery(luceneQuery );

List result = (fullTextQuery).list(); //return a list of managed objects
Iterator i = result.iterator();
while(i.hasNext())
{
    System.out.println("bla : "+i.next());
}

And this is my error : Exception in thread "main" org.hibernate.HibernateException: Lucene event listener not initialized

I don't know what to do, could you help me ?

Thank you.

emmanuel · **Posted:** Wed Apr 25, 2007 7:10 pm

Hi,
Which version are you using?
Are you using it with Hibernate Annotations?
Can you post your cfg.xml file?

fabreax · **Posted:** Thu Apr 26, 2007 3:24 am

I'm using Hibernate 3.2.

This is my cfg.xml :

Code:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>
        <property name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost/tablename</property>
        <property name="hibernate.connection.username">user</property>
        <property name="hibernate.connection.password">pass</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
       
        <property name="show_sql">true</property>
        
        <property name="hibernate.connection.autocommit">false</property> 
        
        <!-- Use the C3P0 connection pool. -->
      <property name="c3p0.min_size">5</property>
      <property name="c3p0.max_size">20</property>
      <property name="c3p0.timeout">1800</property>
      
      <!-- Disable second-level cache. -->
      <property name="cache.provider_class">
         org.hibernate.cache.NoCacheProvider
      </property>
      <property name="cache.use_query_cache">false</property>
      <property name="cache.use_minimal_puts">false</property>
      <property name="max_fetch_depth">0</property>

      <property name="current_session_context_class">thread</property>
        
        <!-- Mapping objet/relationnel -->
        <mapping resource="com/demo/dao/config/Mapping.hbm.xml" />
        
    </session-factory>
</hibernate-configuration>

And if I'm using Annotations, I don't know, I put this in a class called "Categorie" :

Code:

import org.hibernate.search.annotations.*;

@Indexed(index="indexs/Categorie")
public class Categorie {

   private Integer id;

   private String nom;
   
   public Categorie() {}
   
   public Categorie(String nom)
   {
      this.nom = nom;
   }

   public String toString()
   {
      return(nom);
   }
   
   public Integer getId() {
      return id;
   }

   public void setId(Integer id) {
      this.id = id;
   }
   
   @Field(name="Abstract", index=Index.TOKENIZED, store=Store.YES)
   public String getNom() {
      return nom;
   }

   public void setNom(String nom) {
      this.nom = nom;
   }

I don't know where I must create an "indexs" Directory ?

Thank you.

lucian · **Posted:** Thu Apr 26, 2007 3:04 pm

Add these hibernate listeners to the session factory:

<event type="post-update">
<listener class="org.hibernate.search.event.FullTextIndexEventListener"/>
</event>
<event type="post-insert">
<listener class="org.hibernate.search.event.FullTextIndexEventListener"/>
</event>
<event type="post-delete">
<listener class="org.hibernate.search.event.FullTextIndexEventListener"/>
</event>

Don't forget to add these hibernate properties:
<property name="hibernate.search.default.directory_provider">
org.hibernate.search.store.FSDirectoryProvider
</property>
<property name="hibernate.search.default.indexBase">
/usr/lucene
</property>

You will have to create the indexBase directory. Then, Hibernate Search will automatically create for you the indexs/Categorie directory inside /usr/lucene.

I used Hibernate Search 3.0.0 beta, Lucene 2.1.0 and Hibernate 3.2.2GA.

Make sure that you have the new notation for the hibernate properties, like instead of "cache.use_query_cache" you will have "hibernate.cache.use_query_cache".

It should work. Please take a look in the documentation, it is really small and easy to read.

Many many thanks to the Hibernate team that made Hibernate-Lucene integration so easy.

Lucian

fabreax · **Posted:** Fri Apr 27, 2007 3:32 am

Thank you very much for your answer. I already read the little Hibernate Search documentation but I don't understand all.

I change my cfg.xml file and I have this exception, I really don't understand what it means :S.

fabreax · **Posted:** Mon Apr 30, 2007 4:12 am

emmanuel · **Posted:** Tue May 01, 2007 3:24 pm

be sure to use the latest hibernate core version witht he latest hibernate search version, check the compatibility matrix in the download page

fabreax · **Posted:** Wed May 02, 2007 3:01 am

I use Hibernate 3.2.3 with Hibernate Search 3.0.0.Beta1 and lucene-core-2.1.0.

I don't know where is the problem :S

fabreax · **Posted:** Thu May 03, 2007 3:31 am

I made a simple example.

This is my .cfg.xml file :

Code:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>
        <property name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost/testsfmn</property>
        <property name="hibernate.connection.username">fmn</property>
        <property name="hibernate.connection.password">mdp</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        
        <!-- affiche les requetes sql crees par hibernate -->
        <property name="show_sql">true</property>
        
        <!-- commit automatique -->
        <property name="hibernate.connection.autocommit">false</property> 
        
        <!-- Use the C3P0 connection pool. -->
      <property name="c3p0.min_size">5</property>
      <property name="c3p0.max_size">20</property>
      <property name="c3p0.timeout">1800</property>
      
      <!-- Disable second-level cache. -->
      <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
      <property name="cache.use_query_cache">false</property>
      <property name="cache.use_minimal_puts">false</property>
      <property name="max_fetch_depth">0</property>
      
      <!-- Enable Hibernate's automatic session context management -->
      <property name="current_session_context_class">thread</property>
 
 
       <!-- Hibernate Search -->
        <property name="hibernate.search.default.directory_provider">org.hibernate.search.store.FSDirectoryProvider</property>
        <property name="hibernate.search.default.indexBase">/home/fmn/templucene</property>
        
        <!-- Mapping objet/relationnel -->
        <mapping resource="servicedonnees/Mapping.hbm.xml" />

        <!-- Hibernate Search auto indexing -->
      <event type="post-update">
         <listener class="org.hibernate.search.event.FullTextIndexEventListener"/>
      </event>
      <event type="post-insert">
         <listener class="org.hibernate.search.event.FullTextIndexEventListener"/>
      </event>
      <event type="post-delete">
         <listener class="org.hibernate.search.event.FullTextIndexEventListener"/>
      </event>

    </session-factory>

</hibernate-configuration>

My Mapping.hbm.xml could be empty or not, the error is the same.

This is a class which allows to get Sessions :

Code:

package servicedonnees;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.tool.hbm2ddl.SchemaExport;

public class HibernateUtil
{
   private static final Configuration configuration;
   private static final SessionFactory sessionFactory;

   static
   {
      try
      {
         configuration = new Configuration();
         configuration.configure(); // hibernate.cfg.xml reading

         sessionFactory = configuration.buildSessionFactory();

      } catch (HibernateException e) {
         throw new RuntimeException("Probleme de configuration Hibernate : "+ e.getMessage(), e);
      }
   }

   public static final ThreadLocal<Session> session = new ThreadLocal<Session>();

   public static Session getSessionActuelle()
   {
      Session s = (Session) session.get();
      
      // open a new Session, if this Thread have none
      if (s == null)
      {
         s = sessionFactory.openSession();
         session.set(s);
      }
      return s;
   }

   public static void fermerSession()
   {
      Session s = (Session) session.get();
      session.set(null);
      if (s != null)
         s.close();
   }
   
   public static void reinitialiserDonnees()
   {
      SchemaExport se = new SchemaExport(configuration);
      se.create(true,true);
   }

   public static void main(String[] args)
   {
      // clear the database and insert tables
      HibernateUtil.reinitialiserDonnees();

      Session s = HibernateUtil.getSessionActuelle();
      
      
      FullTextSession fullTextSession = Search.createFullTextSession(s);
      
      QueryParser parser = new QueryParser("title", new StopAnalyzer() );

      org.apache.lucene.search.Query luceneQuery = null;
      try {
         luceneQuery = parser.parse( "nom:f" );
      } catch (ParseException e) {
         e.printStackTrace();
      }
      org.hibernate.Query fullTextQuery = fullTextSession.createFullTextQuery( luceneQuery );

      List result = (fullTextQuery).list(); //return a list of managed objects
      Iterator i = result.iterator();
      while(i.hasNext())
      {
         System.out.println("bla : "+i.next());
      }

      // close the session
      HibernateUtil.fermerSession();
   }
}

The error appears at configuration.configure();

This is the error :

Code:

Exception in thread "main" java.lang.VerifyError: (class: org/hibernate/search/event/FullTextIndexEventListener, method: onPostInsert signature: (Lorg/hibernate/event/PostInsertEvent;)V) Incompatible argument to function
   at java.lang.Class.getDeclaredConstructors0(Native Method)
   at java.lang.Class.privateGetDeclaredConstructors(Class.java:2357)
   at java.lang.Class.getConstructor0(Class.java:2671)
   at java.lang.Class.newInstance0(Class.java:321)
   at java.lang.Class.newInstance(Class.java:303)
   at org.hibernate.cfg.Configuration.setListeners(Configuration.java:1536)
   at org.hibernate.cfg.Configuration.parseEvent(Configuration.java:1521)
   at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1452)
   at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1414)
   at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1390)
   at org.hibernate.cfg.Configuration.configure(Configuration.java:1310)
   at org.hibernate.cfg.Configuration.configure(Configuration.java:1296)
   at servicedonnees.HibernateUtil.<clinit>(HibernateUtil.java:34)

Thank you very much.

emmanuel · **Posted:** Thu May 03, 2007 9:43 am

you have an old hibernate3.jar or hibernate-annotations.jar somewhere, most likely

fabreax · **Posted:** Fri May 04, 2007 8:00 am

I haven't hibernate-annotations.jar, I have hibernate-commons-annotations.jar

I downloaded Hibernate Annotations and add hibernate-annotations.jar but the problem was still here.

Next, I tried to update hibernate.jar, it was that ! I have no errors.

Thank you very much !

galactikuh · **Joined:** Wed Jul 18, 2007 6:35 pm **Posts:** 8

A little late to the party, but....

I'm trying to add the event listeners to my config file but I use a persistence file that looks like this:

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/ ... ce_1_0.xsd"
version="1.0">

<persistence-unit name="Predict2">

<provider>org.hibernate.ejb.HibernatePersistence</provider>

<properties>
<property name="hibernate.archive.autodetection" value="class, hbm"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>


<property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>
<property name="hibernate.connection.url" value="jdbc:postgresql://localhost/predict"/>
<property name="hibernate.connection.username" value="predict"/>
<property name="hibernate.connection.password" value="predict"/>

<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>


<property name="hibernate.c3p0.min_size"
value="5"/>
<property name="hibernate.c3p0.max_size"
value="20"/>
<property name="hibernate.c3p0.timeout"
value="300"/>
<property name="hibernate.c3p0.max_statements"
value="50"/>

<property name="hibernate.c3p0.idle_test_period"
value="3000"/>

<property name="hibernate.search.default.directory_provider"
value="org.hibernate.search.store.FSDirectoryProvider"/>
<property name="hibernate.search.default.indexBase"
value="/usr/lucene" />


</properties>
</persistence-unit>

</persistence>

Where should I put the event handlers that are supposed to be in the sessionfactory tag?

Thanks,
K[/quote]

emmanuel · **Posted:** Thu Jul 19, 2007 9:33 am

If you use Hibernate EntityManager 3.3.x you don't need to declare the event listeners. They are autowired if HSearch is in the classpath

galactikuh · **Joined:** Wed Jul 18, 2007 6:35 pm **Posts:** 8

emmanuel wrote:

If you use Hibernate EntityManager 3.3.x you don't need to declare the event listeners. They are autowired if HSearch is in the classpath

Thanks. I updated a number of jars and seem to be beyond my previous error to a new one:

....
Not a mapped entity: class com.stottlerhenke.predict.service.persistence.Prediction
at org.hibernate.search.query.FullTextQueryImpl.buildSearcher(FullTextQueryImpl.java:323)
at org.hibernate.search.query.FullTextQueryImpl.list(FullTextQueryImpl.java:209)
at com.stottlerhenke.predict.service.persistence.LuceneSearch.searchPredictions(LuceneSearch.java:79)
at com.stottlerhenke.predict.service.persistence.PredictPersistence.searchPredictions(PredictPersistence.java:266)
at com.stottlerhenke.predict.service.persistence.PredictPersistencePredictionTest.testSearchPredictions(PredictPersistencePredictionTest.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.internal.runners.TestMethodRunner.executeMethodBody(TestMethodRunner.java:99)
at org.junit.internal.runners.TestMethodRunner.runUnprotected(TestMethodRunner.java:81)
at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)
at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)
at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:66)
at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)
at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)
at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
.....

So this looks to me like my annotized classes are not being mapped in this full text session. I know they are without the Search capabilities though. Could it be that I'm missing some kind of initialization when I set up my FullTextSession? Here's my code for the Search part:

public class LuceneSearch
{

private static final String HIBERNATE_FILE = "META-INF/persistence.xml";

private QueryParser _parser;

private String[] _stopWords;

private FullTextSession _textSession;

private EntityManager _entityManager;

public LuceneSearch(EntityManager entityMgr)
{

_entityManager = entityMgr;
// Have to use sessions here
try
{
Session session = (Session) _entityManager.getDelegate();
_textSession = Search.createFullTextSession(session);
initialize(null);//use default stop words for now
}
catch (ClassCastException ce)
{
// this error supposedly should not get thrown as getDelegate()
// supposedly always returns a Session, but just in case.
// (this was from examples on the web and the #hibernate channel so
// needs to be verified
ce.printStackTrace();
// TODO: Wrap it up and do something else with it
throw ce;
}
}

private void initialize(String[] stopWords)
{
if (stopWords != null)
{
// first set up the parser with the new stop words
_parser = new QueryParser("text", new StandardAnalyzer(stopWords));

}
else
{// default stop words
_parser = new QueryParser("text", new StandardAnalyzer());
}
_stopWords = stopWords;
}

public List<Prediction> searchPredictions(String queryStr)
{
// look in text column of predictions
try
{
org.apache.lucene.search.Query luceneQuery = _parser.parse(queryStr);
Query query = _textSession.createFullTextQuery(luceneQuery,
Prediction.class);

return query.list();
}
catch (Exception pe)
{// KKG TODO: Turn this into a better exception
pe.printStackTrace();
}
return null;
}
}

Thanks again,
Kshanti

emmanuel · **Posted:** Thu Jul 19, 2007 5:12 pm

It means that com.stottlerhenke.predict.service.persistence.Prediction is not part of your persistent unit.
Are you sure @java.persistence.Entity is defined in com.stottlerhenke.predict.service.persistence.Prediction?

Is it part of the jar containing your META-INF/persistence.xml?