Reference multiInstanceElementVar in activiti:in expression

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chris_joelly

Hello,

is it possible to reference the elementVariable of an multiInstanceLoopCharacteristics in an expression in activiti:in?

    <callActivity id="callDoSomething" name="doSomething" calledElement="doSomething" activiti:async="true">
      <extensionElements>
        <activiti:in source="listElem" target="something"></activiti:in>
        <activiti:in source="#{listElem.id}" target="businessKey"></activiti:in>
      </extensionElements>
      <multiInstanceLoopCharacteristics isSequential="false" activiti:collection="listSomething" activiti:elementVariable="listElem"></multiInstanceLoopCharacteristics>
    </callActivity>
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I try to find an more or less non-intrusive way to define a "businessKey" as it is not possible to use the Activiti businessKey API due to the missing ability to set an business key after a process instance is started…

kafeitu

Hello,

is it possible to reference the elementVariable of an multiInstanceLoopCharacteristics in an expression in activiti:in?

<br>&nbsp;&nbsp;&nbsp; <callActivity id="callDoSomething" name="doSomething" calledElement="doSomething" activiti:async="true"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <extensionElements><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <activiti:in source="listElem" target="something"></activiti:in><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <activiti:in source="#{listElem.id}" target="businessKey"></activiti:in><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </extensionElements><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <multiInstanceLoopCharacteristics isSequential="false" activiti:collection="listSomething" activiti:elementVariable="listElem"></multiInstanceLoopCharacteristics><br>&nbsp;&nbsp;&nbsp; </callActivity><br>
I try to find an more or less non-intrusive way to define a "businessKey" as it is not possible to use the Activiti businessKey API due to the missing ability to set an business key after a process instance is started…

The feature is not support now, but you can use other ways.

Create a execution listener of type start on the process that id is callDoSomething.

Xml code:
<br><process id="doSomething"><br>&nbsp;&nbsp;&nbsp; <extensionElements><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <activiti:executionListener event="start" delegateExpression="${setBusinessKeyOnStartProcessInstance}"></activiti:executionListener><br>&nbsp;&nbsp;&nbsp; </extensionElements><br>&hellip;.<br></process><br>
Java code:

<br>@Service<br>@Transactional<br>public class SetBusinessKeyOnStartProcessInstance implements ExecutionListener {<br><br>&nbsp;&nbsp;&nbsp; @Autowired<br>&nbsp;&nbsp;&nbsp; FooManager fooManager;<br>&nbsp; <br>&nbsp;&nbsp;&nbsp; void notify(DelegateExecution execution) throws Exception {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Object businessKey = execution.getVariable("businessKey");<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fooManager.updateBusinessKey(businessKey);<br>&nbsp;&nbsp;&nbsp; }<br>}<br>