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Activiti - how to set condition for exclusive gateway in Java

I have an exclusive gateway in Activiti, how I can set the condition variable in Java code for exclusive gateway? 

variableData.put("condition", conditionVar);
taskService.complete(task.getId(), variableData);

How I can extract task variable on gateway flow? Is it possible or I have to use process variable?

Solution

  • When you design your workflow with conditional exclusive gateway then it will generate XML like below,

    <exclusiveGateway id="exclusiveGw" name="Exclusive Gateway" />

<sequenceFlow id="flow2" sourceRef="exclusiveGw" targetRef="theTask1">
  <conditionExpression xsi:type="tFormalExpression">${input == 1}</conditionExpression>
</sequenceFlow>

    so you need to provide a value of 'input' variable as

    variableData.put("input", 1);

    If your task is ServiceTask then you can do like below 

    delegateExecution.setVariable("input",1);

    For more help http://www.activiti.org/userguide/#bpmnExclusiveGateway