We have a requirement to implement Lucene search in our application. And the design is as follows.
1) Every model class (or the java bean mapping to xml) should have an interface (rather we are following interface design for model classes). So we have defined an entity-name attribute for class something like

<class name="com.test.bean.hibernate.VideoHibernateImpl" table="video" entity-name="Video">
</class>
--------- Java bean class here -----------
@Entity
@Indexed(index="Video")
public class VideoHibernateImpl implements Video, Serializable, Cloneable {


@DocumentId(name = "videoId")
@Field(name = "videoId", index = Index.UN_TOKENIZED, store = Store.NO)
private Long id;
}

2) We have been configuring the session factory (wrapped up in transaction manager) as
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>

<property name="mappingResources">
<list>
<value>com/test/bean/hibernate/Video.hbm.xml</value>
</list>
</property>
<property name="eventListeners">
<map>
<entry key="post-update">
<bean class="org.hibernate.search.event.FullTextIndexEventListener" />
</entry>
</property>
</bean>

When I run the application I am getting the following error.

Caused by: java.lang.NullPointerException
at org.hibernate.search.store.DirectoryProviderFactory.getDirectoryProviderName(DirectoryProviderFactory.java:354)
at org.hibernate.search.store.DirectoryProviderFactory.createDirectoryProviders(DirectoryProviderFactory.java:65)
at org.hibernate.search.impl.SearchFactoryImpl.initDocumentBuilders(SearchFactoryImpl.java:260)
at org.hibernate.search.impl.SearchFactoryImpl.<init>(SearchFactoryImpl.java:94)
at org.hibernate.search.impl.SearchFactoryImpl.getSearchFactory(SearchFactoryImpl.java:172)
at org.hibernate.search.event.FullTextIndexEventListener.initialize(FullTextIndexEventListener.java:44)
at org.hibernate.event.EventListeners.initializeListeners(EventListeners.java:356)
at org.hibernate.cfg.Configuration.getInitializedEventListeners(Configuration.java:1304)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1294)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:855)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:774)

Hi,

you might be running into this bug - HSEARCH-444.
Why are you using entity-name here?

Hi Hardy,

Thanks for the reply. It looks like, I am running into the same issue which you referred. How can I get that fix into my search? Hope, I had to download the source apply the patch or changes then re-build. For information, we are using hibernate-search Hibernate Search 3.0 version.

We are referring these entity-names ( like "Video") in named-queires, while saving the reference is interface (and we are using session.save("Video", Object)) and other reference associations (when this video is associated to other entities). Please find the following example.


<class name="com.test.bean.hibernate.VideoTagHibernateImpl" table="video_tag" entity-name="VideoTag">
<composite-id name="id" class="com.test.bean.hibernate.VideoTagId">
<key-property name="videoId" type="java.lang.Long">
<column name="video_id" />
</key-property>
<key-property name="tagId" type="java.lang.Long">
<column name="tag_id" />
</key-property>
<key-property name="creatorId" type="java.lang.Long">
<column name="creator_id" />
</key-property>
</composite-id>
<many-to-one name="video" class="Video" update="false" insert="false" fetch="select" lazy="false">
<column name="video_id" />
</many-to-one>
</class>

Thanks,
Kishore

Hi,

the best way wold of be to download the source and see if the patch works. If not you can complete/update it and attach it to the issue. Help like this is highly appreciated. You can also comment on the issue itself get Emmanuel to finish his work.

--Hardy