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Timer boundary event on WorkItemNode
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created by <a href="http://community.jboss.org/people/rushproject">Alex Pavlov</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/600495#600495">View the full discussion</a>
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<div class="jive-rendered-content"><p>jBPM 5 does not allow attaching timer boundary events to WorkItemNode. The following fragment:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>        <span style="font-family: 'courier new', courier; font-size: 8pt;"><receiveTask completionQuantity="1" id="_2_1_21" implementation="##WebService" instantiate="false"</span></p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">                     isForCompensation="false" messageRef="ID_30607364_7317_2206_0052_000400200024"</span></p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">                     name="Receive confirmation" startQuantity="1"></span></p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">            <incoming>_2_1_22</incoming></span></p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">            <outgoing>_2_1_25</outgoing></span></p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">        </receiveTask></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">        <boundaryEvent attachedToRef="_2_1_21" id="_2_1_21_1" name="48 Hours"></span></p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">            <outgoing>_2_1_21_2</outgoing></span></p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">            <timerEventDefinition id="ID_22607364_7317_2206_0052_000400200027"></span></p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">                <timeCycle>P48H</timeCycle></span></p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">            </timerEventDefinition></span></p><p><span style="font-family: 'courier new', courier; font-size: 8pt;">        </boundaryEvent></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>results in exception:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>java.lang.ClassCastException: org.jbpm.workflow.core.node.WorkItemNode cannot be cast to org.jbpm.workflow.core.node.CompositeContextNode</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>while executing this line (ProcessHandler.java, line #280):</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>CompositeContextNode compositeNode = (CompositeContextNode) attachedNode;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Both CompositeContextNode and WorkItemNode extend StateBasedNode class, which defines addTimer() - the only method called from ProcessHandler while processing timer boundary event. In other words, changing the offending line to</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>StateBasedNode compositeNode = (StateBasedNode) attachedNode;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>will compile and will not result in run time exception. However, will it run? In other words, would it be sufficient to enable timer boundary events for work item nodes?</p></div>
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