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Re: Why is Timer event not triggered in J2EE container?
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created by <a href="http://community.jboss.org/people/mgeldenhuys">Mare Geldenhuys</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/619845#619845">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi Gary,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I think that your suspicion is correct. The original transaction you use to create the process finishes successfully, since it is only mandated to create the process and that happens without a problem. Therefore the original transaction has already commited and is not available when the timer fires. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Since the timer is executing now in the engine (StatefullKnowledgeSession) and transaction management has been specified as BMT. the engine now requires a transaction manager to get a transaction from it. And this is probably where the problem arises. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The way you do that is by registering the Transaction Manager with the StatefullKnowledgeSession, and that is done upon creation/retrieval of the said StatefullKnowledgeSession. That means getting the Transaction Manager which is managed by Websphere in your case and passing it to the KnowledgeService through an Environment. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The question now really is, how are you creating your StatefullKnowledgeSession? If you are using the jbpm-gwt-core jar's sources CommandDelegate as an example, you will have to look at the following lines,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><table><tbody><tr><td style=";"></td><td style=";">    </td><td style=";">Environment env = KnowledgeBaseFactory.newEnvironment();</td></tr><tr><td style=";"></td><td style=";">    </td><td style=";">env.set(EnvironmentName.ENTITY_MANAGER_FACTORY, emf);</td></tr></tbody></table><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>This is where you will need to add the reference to your transaction manager, </p><p><a class="jive-link-anchor-small"><br/><span class="java_plain">env</span><span class="java_separator">.</span><span class="java_plain">set</span><span class="java_separator">(</span><span class="java_plain"> </span><span class="java_type">EnvironmentName</span><span class="java_separator">.</span><span class="java_plain">TRANSACTION_MANAGER</span><span class="java_separator">,</span><span class="java_plain">  </span><span class="java_type">TransactionManagerServices</span><span class="java_separator">.</span><span class="java_plain">getTransactionManager</span><span class="java_separator">()</span><span class="java_plain"> </span><span class="java_separator">);// Change this to  where you get your transaction manager from</span></a></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span class="java_separator">If this does not work, someone from the community with more experience will need to assist. Whichever way, please post your findings, as I would like to see how it pans out.</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span class="java_separator">Mare<br/></span></p></div>
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