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Transaction Issue with EJBs
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created by <a href="https://community.jboss.org/people/roxy1987">Shobhit Tyagi</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/802749#802749">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi Community,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have run into an issue with transactions.</p><p>I raised a similar question before and I marked it as answered after getting some helpful replies but it looks like the issue was temporarily gone.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have 3 separate prjects. One web, one EJB and one simple java.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>For instance if I have to start a process or I have to complete a task, I send request from a Managed Bean(web project) to the Session Bean(EJB project), which calls the APIs present in the java project.</p><p>In my SessionBean, I use the TransactionManagement annotation as</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 jive-java">@TransactionManagement(TransactionManagementType.BEAN)
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>And I call the BPM APIs as </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 jive-java">@Resource
<font color="navy"><b>private</b></font> EJBContext context;
 
....
....
@Override
<font color="navy"><b>public</b></font> <font color="navy"><b>void</b></font> completeTask(<font color="navy"><b>long</b></font> taskID, String userID, Map<String, Object> map) <font color="navy"><b>throws</b></font> Exception
<font color="navy">{</font>
  UserTransaction ut = context.getUserTransaction();
  <font color="navy"><b>try</b></font>
  <font color="navy">{</font>
   ut.begin();
   BpmAPI.startTask(taskID, userID);
   BpmAPI.completeTask(taskID, userID);
   ut.commit();
  <font color="navy">}</font>
  <font color="navy"><b>catch</b></font>(Exception e)
  <font color="navy">{</font>
   ut.rollback();
   e.printStackTrace();
  <font color="navy">}</font>
<font color="navy">}</font>
 
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But doing this gives me the transaction exception. It completes the task but doesnt signal the process instance. But this happens when I leave the taskHandler open, which is created while starting the process instance.</p><p>If I dispose the taskHandler, the transaction exception goes away but the process instance still doesnt proceed after completing the task. </p><p>I believe for signalling the process, taskHandler needs to be not disposed.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>For now the workaround I am doing is disposing the taskHandler, completing the task, completing the workitem(to signal process instance). But just completeTask should do the trick.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>COuld anyone please help me with the Transaction Management.</p><p>I use Websphere 8.5 web container.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Regards.</p></div>
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<p style="margin: 0;">Reply to this message by <a href="https://community.jboss.org/message/802749#802749">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in jBPM at <a href="https://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034">Community</a></p>
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