multiple instance using Collection process variable

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lojian

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>
        <inputDataItem name="PUBLISHER" />
    </multiInstanceLoopCharacteristics>
</callActivity>
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I am using following code to start the process instance:

Collection publishers = new ArrayList();
publishers.add("pub1");
publishers.add("pub2");
publishers.add("pub3");
HashMap<String, Object> params = new HashMap<String, Object>();
params.put("ALLPUBLISHERS",publishers)
runtime.startProcessInstanceByKey("testforeach",params);
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It is strange that Activiti reports that:

Variable ALLPUBLISHERS' is not a Collection

Any idea?

frederikherema1

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