Accessing Sequence Flow id from DelegateExcution

As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.

erwin57

I am currently using Activiti 5.13 version and trying to create my own expression evaluator which accepts a string expression and DelegateExecution as show below.

<sequenceFlow id="flow1" sourceRef="theStart" targetRef="theTask">
  <conditionExpression xsi:type="tFormalExpression">
    <![CDATA[${mybean.evaluate(myExpressionString,execution)}]]>
  </conditionExpression>
</sequenceFlow>
‍‍‍‍‍‍‍

class MyBean {
   public Boolean evaluate(String expressionString, DelegateExcution execution){
              System.out.println(execution.getCurrentActivityId());
              return myEvaluator.evaluate(expressionString);
   }
}
‍‍‍‍‍‍‍‍

The method prints out the exclusive gateway id instead of the sequence flow id ( "flow1"). I also have a second sequence flow which printed out the same exclusive gateway id. How do I get hold of the sequence flow id from DelegateExection?

Thanks in advance.

martin_grofcik

Hi,

to get sequence flow which is evaluated you should change

<br>&nbsp;&nbsp;&nbsp; while (outgoingSeqFlow == null && transitionIterator.hasNext()) {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PvmTransition seqFlow = transitionIterator.next();<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Condition condition = (Condition) seqFlow.getProperty(BpmnParse.PROPERTYNAME_CONDITION);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if ( (condition == null && (defaultSequenceFlow == null || !defaultSequenceFlow.equals(seqFlow.getId())) ) <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; || (condition != null && condition.evaluate(execution)) ) {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (log.isDebugEnabled()) {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; log.debug("Sequence flow '{}'selected as outgoing sequence flow.", seqFlow.getId());<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; outgoingSeqFlow = seqFlow;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>&nbsp;&nbsp;&nbsp; }<br>
Condition is evaluated only from execution, which does not contain information about flow to take.

Regards
Martin