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Strange problem with Entitymanager.remove()
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created by <a href="https://community.jboss.org/people/suikast42">Sueleyman Vurucu</a> in <i>EJB3</i> - <a href="https://community.jboss.org/message/791994#791994">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi guys,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have a strange problem to delete entities in bulk mode from JSF managed CDI bean. If I trigger the delete method from an EJB than it's works as excpected. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>This is my "Bulk" delete method. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java"> @Override
  <font color="navy"><b>public</b></font> <T <font color="navy"><b>extends</b></font> EditableIF> List<Long> makeTransient(List<T> editables)<font color="navy">{</font>
    <font color="navy"><b>try</b></font> <font color="navy">{</font>
      <font color="navy"><b>if</b></font> (editables == <font color="navy"><b>null</b></font> || editables.size() == 0) <font color="navy">{</font>
        log.error(<font color="red">"Nothing to delete"</font>);
        <font color="navy"><b>return</b></font> <font color="navy"><b>new</b></font> ArrayList<>();
      <font color="navy">}</font>
      <font color="darkgreen">// Backup the current flushmode</font>
      FlushModeType flushModeBefore = em.getFlushMode();
      em.setFlushMode(FlushModeType.COMMIT);
      <font color="navy"><b>int</b></font> i = 0;
      <font color="darkgreen">// Save or update all editables and flush every 50 times</font>
      ArrayList<Long> ids = <font color="navy"><b>new</b></font> ArrayList<>();
      <font color="navy"><b>for</b></font> (T eif : editables) <font color="navy">{</font>
        em.remove(mergeIfNeeded(eif));
        ids.add(eif.getId());
        i++;
        <font color="navy"><b>if</b></font> (i % BULK_FLUSH_SIZE == 0) <font color="navy">{</font>
          em.flush();
        <font color="navy">}</font>
      <font color="navy">}</font>
      em.flush();
      em.setFlushMode(flushModeBefore);
      <font color="navy"><b>return</b></font> ids;
    <font color="navy">}</font> <font color="navy"><b>catch</b></font> (HibernateException ex) <font color="navy">{</font>
      <font color="navy"><b>throw</b></font> <font color="navy"><b>new</b></font> InfrastructureException(ex);
    <font color="navy">}</font>
  <font color="navy">}</font>
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The intent of this mehtod is that I wan't improve performance for big deletions. As I said, if I trigger this method from  an EJB then it works fine. But if I trigger this from an SessionScoped CDI bean then the database entries are not deleted. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>For tracking the behaviuour of hibernate I switch the loglevel of org.hibernate.event.internal.DefaultDeleteEventListener to TRACE and add a delete interceptor. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The related logentires are shown below: </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code">13:36:58,120 TRACE [org.hibernate.event.internal.DefaultDeleteEventListener] (http-localhost-127.0.0.1-8080-4) Deleting a persistent!
instance
13:36:58,135 TRACE [org.hibernate.event.internal.DefaultDeleteEventListener] (http-localhost-127.0.0.1-8080-4) Deleting [com.siemag.components.model.message.MessagePrototype#281280]
13:36:58,135 INFO  [com.siemag.components.server.updating.DomainInterceptor] (http-localhost-127.0.0.1-8080-4) Delete ID 281280 entity com.siemag.components.model.message.MessagePrototype@917079[Id=281280,name=CC011/1444,creationTime=Sun Jan 13 15:09:44 CET 2013]
13:36:58,135 TRACE [org.hibernate.event.internal.DefaultDeleteEventListener] (http-localhost-127.0.0.1-8080-4) Deleting a persistent instance
13:36:58,151 TRACE [org.hibernate.event.internal.DefaultDeleteEventListener] (http-localhost-127.0.0.1-8080-4) Deleting [com.siemag.components.model.message.MessagePrototype#281281]
13:36:58,151 INFO  [com.siemag.components.server.updating.DomainInterceptor] (http-localhost-127.0.0.1-8080-4) Delete ID 281281 entity com.siemag.components.model.message.MessagePrototype@1914f6[Id=281281,name=HBS/145,creationTime=Sun Jan 13 15:09:44 CET 2013]
13:36:58,634 TRACE [org.hibernate.event.internal.DefaultDeleteEventListener] (http-localhost-127.0.0.1-8080-4) Deleting a persistent instance
13:36:58,634 TRACE [org.hibernate.event.internal.DefaultDeleteEventListener] (http-localhost-127.0.0.1-8080-4) Deleting [com.siemag.components.model.message.MessagePrototype#281280]
13:36:58,634 INFO  [com.siemag.components.server.updating.DomainInterceptor] (http-localhost-127.0.0.1-8080-4) Delete ID 281280 entity com.siemag.components.model.message.MessagePrototype@adfa17[Id=281280,name=CC011/1444,creationTime=Sun Jan 13 15:09:44 CET 2013]
13:36:58,650 TRACE [org.hibernate.event.internal.DefaultDeleteEventListener] (http-localhost-127.0.0.1-8080-4) Deleting a persistent instance
13:36:58,650 TRACE [org.hibernate.event.internal.DefaultDeleteEventListener] (http-localhost-127.0.0.1-8080-4) Deleting [com.siemag.components.model.message.MessagePrototype#281281]
13:36:58,650 INFO  [com.siemag.components.server.updating.DomainInterceptor] (http-localhost-127.0.0.1-8080-4) Delete ID 281281 entity com.siemag.components.model.message.MessagePrototype@1616c73[Id=281281,name=HBS/145,creationTime=Sun Jan 13 15:09:44 CET 2013]
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The strange thing here is that hibernate recognize the delete action but it doesn't excecute a delete statement on the DB. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks in advance. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>My runtime:</p><p>Jboss 7.1.1.Final</p><p>Hibernate 4.1.4.Final</p><p>Primefaces 3.4.2</p></div>
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