Gateway Expressions do not support delegate executions

StephenOTT · March 26, 2021, 6:29pm

possible relation:

Possible reactions:

Example:

camunda/camunda-bpm-platform/blob/master/engine/src/main/java/org/camunda/bpm/engine/impl/bpmn/behavior/ExclusiveGatewayActivityBehavior.java#L62


      
          public void doLeave(ActivityExecution execution) {
          
            LOG.leavingActivity(execution.getActivity().getId());
          
            PvmTransition outgoingSeqFlow = null;
            String defaultSequenceFlow = (String) execution.getActivity().getProperty("default");
            Iterator<PvmTransition> transitionIterator = execution.getActivity().getOutgoingTransitions().iterator();
            while (outgoingSeqFlow == null && transitionIterator.hasNext()) {
              PvmTransition seqFlow = transitionIterator.next();
          
              Condition condition = (Condition) seqFlow.getProperty(BpmnParse.PROPERTYNAME_CONDITION);
              if ( (condition == null && (defaultSequenceFlow == null || !defaultSequenceFlow.equals(seqFlow.getId())) )
                      || (condition != null && condition.evaluate(execution)) ) {
          
                LOG.outgoingSequenceFlowSelected(seqFlow.getId());
                outgoingSeqFlow = seqFlow;
              }
            }
          
            if (outgoingSeqFlow != null) {
              execution.leaveActivityViaTransition(outgoingSeqFlow);

vs

github.com

camunda/camunda-bpm-platform/blob/master/engine/src/main/java/org/camunda/bpm/engine/impl/bpmn/behavior/ServiceTaskExpressionActivityBehavior.java#L50


      
              this.expression = expression;
              this.resultVariable = resultVariable;
            }
          
            @Override
            public void performExecution(final ActivityExecution execution) throws Exception {
              executeWithErrorPropagation(execution, new Callable<Void>() {
                @Override
                public Void call() throws Exception {
                  //getValue() can have side-effects, that's why we have to call it independently from the result variable
                  Object value = expression.getValue(execution);
                  if (resultVariable != null) {
                    execution.setVariable(resultVariable, value);
                  }
                  leave(execution);
                  return null;
                }
              });
          
            }
          }