topic Re: multiple instance using Collection process variable in Alfresco Archive

multiple instance using Collection process variable

lojian — Fri, 08 Apr 2011 13:21:38 GMT

Hi,I am doing an testing on using Multi-instance activity.<callActivity id="callPublisherdeploy" name="Deploy All Publishers" calledElement="Publisherdeploy"> <multiInstanceLoopCharacteristics isSequential="true"> <loopDataInputRef>ALLPUBLISHERS</loopDataInputRef>

Re: multiple instance using Collection process variable

frederikherema1 — Fri, 08 Apr 2011 13:42:55 GMT

Strange, this is the code and looks okay to me:


org.activiti.engine.impl.bpmn.behavior.MultiInstanceActivityBehavior


 else if (collectionVariable != null) {
      Object obj = execution.getVariable(collectionVariable);
      if (!(obj instanceof Collection)) {
        throw new ActivitiException("Variable " + collectionVariable+"' is not a Collection");
      }
      nrOfInstances = ((Collection) obj).size();

and


org.activiti.engine.impl.bpmn.parser.BpmnParse


// activiti:collection
      String collection = miLoopCharacteristics.attributeNS(BpmnParser.ACTIVITI_BPMN_EXTENSIONS_NS, "collection");
      if (collection != null) {
        if (collection.contains("{")) {
          miActivityBehavior.setCollectionExpression(expressionManager.createExpression(collection));
        } else {
          miActivityBehavior.setCollectionVariable(collection);
        }
      }

      // loopDataInputRef
      Element loopDataInputRef = miLoopCharacteristics.element("loopDataInputRef");
      if (loopDataInputRef != null) {
        String loopDataInputRefText = loopDataInputRef.getText();
        if (loopDataInputRefText != null) {
          if (loopDataInputRefText.contains("{")) {
            miActivityBehavior.setCollectionExpression(expressionManager.createExpression(loopDataInputRefText));
          } else {
            miActivityBehavior.setCollectionVariable(loopDataInputRefText);
          }
        }
      }

You're using java.util.ArrayList right ?

Re: multiple instance using Collection process variable

lojian — Fri, 08 Apr 2011 13:49:22 GMT

OMG!

It's my fault. I actually missed the parameters for starting the process instance.

Thank you Fred! You are always helpful.

Strange, this is the code and looks okay to me:
org.activiti.engine.impl.bpmn.behavior.MultiInstanceActivityBehavior else if (collectionVariable != null) { Object obj = execution.getVariable(collectionVariable); if (!(obj instanceof Collection)) { throw new ActivitiException("Variable " + collectionVariable+"' is not a Collection"); } nrOfInstances = ((Collection) obj).size();
and
org.activiti.engine.impl.bpmn.parser.BpmnParse // activiti:collection String collection = miLoopCharacteristics.attributeNS(BpmnParser.ACTIVITI_BPMN_EXTENSIONS_NS, "collection"); if (collection != null) { if (collection.contains("{")) { miActivityBehavior.setCollectionExpression(expressionManager.createExpression(collection)); } else { miActivityBehavior.setCollectionVariable(collection); } } // loopDataInputRef Element loopDataInputRef = miLoopCharacteristics.element("loopDataInputRef"); if (loopDataInputRef != null) { String loopDataInputRefText = loopDataInputRef.getText(); if (loopDataInputRefText != null) { if (loopDataInputRefText.contains("{")) { miActivityBehavior.setCollectionExpression(expressionManager.createExpression(loopDataInputRefText)); } else { miActivityBehavior.setCollectionVariable(loopDataInputRefText); } } }
You're using java.util.ArrayList right ?