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Diagram not upadet (using async. work item)
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created by <a href="http://community.jboss.org/people/liviah">Livia Hauser</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/630012#630012">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi All,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>last weekend I played arround with drools (5.3.0.CR1) and  jbpm (5.1.1.Final) on jboss 5.1.</p><p>I have a simple bpmn:</p><p>[1]start -> [2] timer ->[3]script -> [4]AsyncHandler -> [5]timer -> [6]script -> [7]end</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>After my AsyncHandler calls completeWorkItem task [5] and [6] will executed. But if I take a look at the diagram <span style="text-decoration: underline;">task [4] is still highlighted</span>.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>How I can make shure a user will see right/updated diagram?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>My WorkHandler to test a asynch behavior:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: andale mono,times; font-size: 8pt;">public class AsyncWorkItemHandler implements WorkItemHandler {</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: andale mono,times; font-size: 8pt;">     StatefulKnowledgeSession ksession;</span></p><p>    </p><p>    </p><p><span style="font-family: andale mono,times; font-size: 8pt;">    public AsyncWorkItemHandler(ProcessContext kcontext){</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">        super();</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">        this.ksession = (StatefulKnowledgeSession)kcontext.getKnowledgeRuntime();</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">    }</span></p><p>    </p><p><span style="font-family: andale mono,times; font-size: 8pt;">    public AsyncWorkItemHandler(StatefulKnowledgeSession ksession) {</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">        super();</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">        this.ksession = ksession;</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: andale mono,times; font-size: 8pt;">   @Override</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">   public void executeWorkItem(WorkItem workItem, WorkItemManager manager){</span></p><p>        </p><p><span style="font-family: andale mono,times; font-size: 8pt;">        class WThread extends Thread{</span></p><p>            </p><p><span style="font-family: andale mono,times; font-size: 8pt;">            int sessionId;</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">            long itemId;</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">            KnowledgeBase kbase;</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">            Environment env;</span></p><p>            </p><p><span style="font-family: andale mono,times; font-size: 8pt;">            public WThread(int sessionId,  long itemId,</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                    KnowledgeBase kbase, Environment env) {</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                super();</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                this.sessionId = sessionId;;</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                this.itemId = itemId;</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                this.kbase = kbase;</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                this.env = env;</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">            }</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: andale mono,times; font-size: 8pt;">            @Override</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">            public void run(){</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                int seconds = 30;</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                System.out.println("thread for session " + this.sessionId + " (workitem "+ this.itemId +"), sleep " + seconds + "s");</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                try {</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                    Thread.currentThread().sleep(seconds * 1000);</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                } catch (InterruptedException e) {</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                    e.printStackTrace();</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                }</span></p><p>                </p><p><span style="font-family: andale mono,times; font-size: 8pt;">                StatefulKnowledgeSession ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(this.sessionId, kbase, null, env);</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                ksession.getWorkItemManager().registerWorkItemHandler("AsyncTask", new AsyncWorkItemHandler(ksession));</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                ksession.getWorkItemManager().completeWorkItem(this.itemId, null);</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                System.out.println("thread for session " + this.sessionId + " (workitem "+ this.itemId +") end");</span></p><p>                </p><p><span style="font-family: andale mono,times; font-size: 8pt;">                this.clean();</span></p><p>                </p><p><span style="font-family: andale mono,times; font-size: 8pt;">            }</span></p><p>            </p><p><span style="font-family: andale mono,times; font-size: 8pt;">               protected void clean(){</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                   this.kbase = null;</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">                   this.env = null;</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">            }</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">        }</span></p><p>        </p><p><span style="font-family: andale mono,times; font-size: 8pt;">        KnowledgeBase kbase = ksession.getKnowledgeBase();</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">        Environment env = ksession.getEnvironment();</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">        int sessionId = ksession.getId();</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">        long itemId = workItem.getId();</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">        WThread t = new WThread(sessionId, /*processId,*/ itemId, kbase, env);</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">        t.start();</span></p><p><span style="font-family: andale mono,times; font-size: 8pt;">      }</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: andale mono,times; font-size: 8pt;">    }</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: andale mono,times; font-size: 8pt;">}</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Any hints?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Many thx + greetings,</p><p>Livia</p></div>
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<p style="margin: 0;">Start a new discussion in jBPM at <a href="http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034">Community</a></p>
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