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Re: Work Item not persisted
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created by <a href="https://community.jboss.org/people/swaminathan.bhaskar">Swaminathan Bhaskar</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/760862#760862">View the full discussion</a>
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<div class="jive-rendered-content"><p>Finally works ... Made some code adjustments to launch a thread from the CustomWorkItemHandler and pass the KnowledgeSession as follows:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">import org.drools.runtime.process.*;</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">public class CustomWorkItemTask implements Runnable {</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    private WorkItem item;</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    private WorkItemManager manager;</span></p><p style="padding-left: 30px;">    </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    public CustomWorkItemTask(WorkItem item, WorkItemManager manager) {</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        this.item = item;</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        this.manager = manager;</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    }</span></p><p style="padding-left: 30px;">    </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    @Override</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    public void run() {</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        System.out.printf("\n-----> Waiting in custom work item %s <ID:%d> for 60 secs\n", item.getName(), item.getId());</span></p><p style="padding-left: 30px;">        </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        // Artificial wait</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        try {</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">            Thread.sleep(60000);</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        }</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        catch (Exception ex) {</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        }</span></p><p style="padding-left: 30px;">        </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        System.out.printf("\n-----> Completing custom work item %s <ID:%d>\n", item.getName(), item.getId());</span></p><p style="padding-left: 30px;">        </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">           manager.completeWorkItem(item.getId(), null);</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    }</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">}</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt;">// -------------------------------------------------------------<br/></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">import org.drools.runtime.*;</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">import org.drools.runtime.process.*;</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">public class CustomWorkItemHandler implements WorkItemHandler {</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    private KnowledgeRuntime ksession;</span></p><p style="padding-left: 30px;">    </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    public CustomWorkItemHandler(KnowledgeRuntime session) {</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        this.ksession = session;</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    }</span></p><p style="padding-left: 30px;">    </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    @Override</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    public void executeWorkItem(WorkItem item, WorkItemManager manager) {</span></p><p style="padding-left: 30px;"><strong style="color: #ff0000; font-size: 8pt; font-family: courier new,courier;">        // NOTE: Cannot use the WorkItemManager passed into the method - It will throw the following exception:</strong></p><p style="padding-left: 30px;"><strong style="color: #ff0000; font-size: 8pt; font-family: courier new,courier;">        //       javax.persistence.TransactionRequiredException: No active JTA transaction on joinTransaction call</strong></p><p style="padding-left: 30px;">        </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        CustomWorkItemTask task = new CustomWorkItemTask(item, ksession.getWorkItemManager());</span></p><p style="padding-left: 30px;">        </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">        new Thread(task).start();</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    }</span></p><p style="padding-left: 30px;">    </p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    @Override</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    public void abortWorkItem(WorkItem item, WorkItemManager manager) {</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">    }</span></p><p style="padding-left: 30px;"><span style="font-family: courier new,courier; font-size: 8pt; color: #0000ff;">}</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Hope this is helpful for someone</p></div>
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