Updating XML Payload on the Bus

Question

Hello,
I'm looking for the best solution for a particular problem. Any guidance would be appreciated.
I have the following payloads in a proxy service
$a=
<Message>
    <order>
        <orderId>1</orderId>
        <someValue>A</someValue>
    </order>
    <order>
        <orderId>2</orderId>
        <someValue>B</someValue>
    </order>
<Message> $b=
<Message>
    <someCalc>
        <orderId>1</orderId>
        <newValue>C</newValue>
    </someCalc>
    <someCalc>
        <orderId>2</orderId>
        <newValue>D</newValue>
    </someCalc>
<Message> I now want to use newValue from $b to update someValue in $a. I considered using the for loop and replace action like this:
ESBFor $someCalc in $b/someCalc {
    Replace $a/order[orderId=$someCalc/orderId]/someValue with <someValue>{fn:data($someCalc/newValue)}</someValue>
}The problem is that the Xpath seems to not have insight into variables so the [orderId=$someCalc/orderId] wont work.
The obvious solution is to have your business service pass in $a, modify that document and pass back a $a, but this might be overhead when using legacy services.
It'd be nice if XQuery had update syntax (I think there's a proposal out their for this) or if you could use a dynamic scripting language like Jython on Groovy to modify the variables.
Is there something I haven't thought of?

Answer 1

Hi,
As you can see mapping is because of Mapping , Exception During Execute come because of mapping error. So if you doing some graphical mapping there as you said you are concatenating some values passed from SAP R/3 in mapping , check it. Rather you can also check your mapping is right ot wrong using Test tab in mapping editor. also you can use Interface mapping for testing your whole scenario, i will prefer Interface Mapping thing to test my scenario as it will tell you if your requeswt mapping is correct or response message is correct.
Lets check there and you will see exact problem of mapping.
Regards
Aashish Sinha