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BPM Events User's Guide
Understanding BPM Events : The XML event : Accessing XML body content
 

Accessing XML body content

The content of the XML body can be accessed using xpath notation. The state from which the order was shipped can be accessed from the purchase order xml event, as shown below:
rule monitor_po
activated by
    msg of PurchaseOrder
then {
    println("============== monitoring_po =============");
    println("msg.po:purchaseOrder.po:shipTo.po:state = " +
msg["po:purchaseOrder/po:shipTo/po:state"]);
}