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XOR split error - sequenceFlow condition not evaluating
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created by <a href="https://community.jboss.org/people/jasonjho">Jason J</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/773762#773762">View the full discussion</a>
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<div class="jive-rendered-content"><p>I just upgraded to Drools 5.5.0.CR1 and jBPM 5.4.0.CR1.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have a workflow that has been working just fine on Drools 5.3.1.Final and jBPM 5.2.Final, but is breaking on the new version.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><strong>Problem</strong></p><p>I have a diverging XOR gateway that is failing to evaluate on either branch.</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">
<sequenceFlow id="_31-_43" sourceRef="_31" targetRef="_43" name="Saved" tns:priority="2" >
     <conditionExpression xsi:type="tFormalExpression" language="http://www.java.com/java" >
         
         QueryResults queryResults = kcontext.getKnowledgeRuntime().getQueryResults("Saved");
         Iterator iter = queryResults.iterator();
         if(!iter.hasNext()) {
           return false;
         }
         QueryResultsRow qResult = (QueryResultsRow)iter.next();
         SaveEvent se = (SaveEvent) qResult.get( "$saveEvent" );
         return se != null;
      </conditionExpression>
</sequenceFlow>
<sequenceFlow id="_31-_45" sourceRef="_31" targetRef="_45" name="Published" tns:priority="2" >
     <conditionExpression xsi:type="tFormalExpression" language="http://www.java.com/java" >         
         QueryResults queryResults = kcontext.getKnowledgeRuntime().getQueryResults("Published");
         Iterator iter = queryResults.iterator();
         if(!iter.hasNext()) {
           return false;
         }
         QueryResultsRow qResult = (QueryResultsRow)iter.next();
         PublishEvent pe = (PublishEvent) qResult.get( "$publishEvent" );
         return pe != null;
      </conditionExpression>
</sequenceFlow></code></pre><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>Here's an example of one of the rule queries that is being invoked:</p><pre class="jive-pre"><code class="jive-code">
query "Save"
     $processInstance : WorkflowProcessInstance()
     $saveEvent : SaveEvent()
end
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The condition for either branch is based on the existence of a Fact in the working memory (thus, the need to use a rule query), and not a process variable which most conditions seem to be based on.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Is this a known regression?  I don't see why this would start failing on an upgraded deployment.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks to anyone who can help.</p></div>
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<p style="margin: 0;">Reply to this message by <a href="https://community.jboss.org/message/773762#773762">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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