error:getListeners is not valid without active transaction

fxbird · **Joined:** Thu Dec 31, 2009 8:54 am **Posts:** 2

Hi ,I'm using hibernate search to study full text search. When I run my first app, I got the error below:
Exception in thread "main" org.hibernate.HibernateException: getListeners is not valid without active transaction
at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:338)
at $Proxy9.getListeners(Unknown Source)
at org.hibernate.search.backend.impl.EventSourceTransactionContext.getIndexWorkFlushEventListener(EventSourceTransactionContext.java:78)
at org.hibernate.search.backend.impl.EventSourceTransactionContext.<init>(EventSourceTransactionContext.java:41)
at org.hibernate.search.impl.FullTextSessionImpl.<init>(FullTextSessionImpl.java:75)
at org.hibernate.search.Search.getFullTextSession(Search.java:23)
at com.v512.examples.HibernateSearchTest.indexGuestbook(HibernateSearchTest.java:17)
at com.v512.examples.HibernateSearchTest.main(HibernateSearchTest.java:59)

my app:

Code:

Session session = HibernateSessionFactoryUtil.getSessionFactory().getCurrentSession();

      FullTextSession ftSession = org.hibernate.search.Search.getFullTextSession(session);//this line cause the above error!!!!
      ftSession.getTransaction().begin();
      List<Guestbook> guestbooks = session.createQuery("from Guestbook").list();
      for (Guestbook gb : guestbooks) {
         ftSession.index(gb); // 手工方式，把所有持久化对象进行索引
      }
      ftSession.getTransaction().commit();

hibernate.cfg.xml:
<property name="current_session_context_class">thread</property>
<mapping resource="com/v512/examples/Guestbook.hbm.xml" />
<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>
<event type="post-collection-recreate">
<listener class="org.hibernate.search.event.FullTextIndexEventListener" />
</event>
<event type="post-collection-remove">
<listener class="org.hibernate.search.event.FullTextIndexEventListener" />
</event>
<event type="post-collection-update">
<listener class="org.hibernate.search.event.FullTextIndexEventListener" />
</event>
my lib version:

Quote:

hibernate core:3.3.2 GA
hibernate search:3.1.1 GA

who knows reason? thanks.

sanne.grinovero · **Posted:** Thu Dec 31, 2009 9:12 am

Hi,
just begin the transaction before getFullTextSession(), exactly as the error message suggests:

Code:

Session session = HibernateSessionFactoryUtil.getSessionFactory().getCurrentSession();
session.getTransaction().begin();
FullTextSession ftSession = org.hibernate.search.Search.getFullTextSession(session);
List<Guestbook> guestbooks = session.createQuery("from Guestbook").list();
for (Guestbook gb : guestbooks) {
   ftSession.index(gb);
}
ftSession.getTransaction().commit();

keep in mind that session and ftSession are similar, fstSession just wraps the other by adding functionality:
session.getTransaction() == ftSession.getTransaction()

fxbird · **Joined:** Thu Dec 31, 2009 8:54 am **Posts:** 2

s.grinovero wrote:

Hi,
just begin the transaction before getFullTextSession(), exactly as the error message suggests:

Code:

Session session = HibernateSessionFactoryUtil.getSessionFactory().getCurrentSession();
session.getTransaction().begin();
FullTextSession ftSession = org.hibernate.search.Search.getFullTextSession(session);
List<Guestbook> guestbooks = session.createQuery("from Guestbook").list();
for (Guestbook gb : guestbooks) {
   ftSession.index(gb);
}
ftSession.getTransaction().commit();

keep in mind that session and ftSession are similar, fstSession just wraps the other by adding functionality:
session.getTransaction() == ftSession.getTransaction()

thank s.grinovero for your reply. Why does it need open a session transaction explicitly? I found closing the transaction can't be done with a error saying " Transaction not successfully started", here is the code:

Code:

Session session = HibernateSessionFactoryUtil.getSessionFactory().getCurrentSession();

      Transaction tx=session.getTransaction();
      tx.begin();
      FullTextSession ftSession = org.hibernate.search.Search.getFullTextSession(session);
      ftSession.getTransaction().begin();
      List<Guestbook> guestbooks = session.createQuery("from Guestbook").list();
      for (Guestbook gb : guestbooks) {
         ftSession.index(gb); // 手工方式，把所有持久化对象进行索引
      }
      
      ftSession.getTransaction().commit();
      
      //my code start
      tx.commit();
      session.getSessionFactory().close();
      //my code end

sanne.grinovero · **Posted:** Sun Jan 03, 2010 8:36 am

Quote:

Why does it need open a session transaction explicitly?

A very simple reason, because of

Quote:

<property name="current_session_context_class">thread</property>

your Session gets wrapped in a org.hibernate.context.ThreadLocalSessionContext which is mandating an open transaction before any method on Session is allowed to get called.
Search.getFullTextSession(session) is calling a method on the Session, which is not allowed...
See https://forum.hibernate.org/viewtopic.php?f=9&t=998336 for more info; I think we will improve on this on some way. At the moment you have to either start a transaciton before, or don't scope the sessions to threads.

In the code shown in your last post you're committing twice the same transaction, that's not allowed.