Mapping an unbounded message to a bounded.

Question

Hi.  I am relatively new to XI and have a mapping problem that I have been struggling with all day.
I have a field SOinErr within an unbounded message that I need to concatenate into a field within a bounded message
(Content).  I am OK with writing a udf to append the fields but I'm not sure how to iterate through each instance of SOinErr.
We have XI 7.0 SP13.
Input: -
  <?xml version="1.0" encoding="UTF-8" ?>
- <ns0:Messages xmlns:ns0="http://sap.com/xi/XI/SplitAndMerge">
- <ns0:Message1>
- <ns1:MT_AllSalesOrderNumber xmlns:ns1="http://royalmail.com/RM_ORDERS_CONTINUITY">
- <All_SO_Numbers>
  <SOinErr />
  <Err_Msg />
  <SOnoErr>500</SOnoErr>
  </All_SO_Numbers>
- <All_SO_Numbers>
  <SOinErr />
  <Err_Msg />
  <SOnoErr>600</SOnoErr>
  </All_SO_Numbers>
- <All_SO_Numbers>
  <SOinErr />
  <Err_Msg />
  <SOnoErr>700</SOnoErr>
  </All_SO_Numbers>
  </ns1:MT_AllSalesOrderNumber>
  </ns0:Message1>
- <ns0:Message2>
- <ns1:MT_OrderContinuity xmlns:ns1="http://royalmail.com/RM_ORDERS_CONTINUITY">
- <DT_OrderContinuity>
  <CustomerAccountNumber />
  <ServiceRegister />
  <ServiceLevel />
  <Weight />
  <ItemCount />
  <BagCount />
  <Class />
  <Format />
  <Sortation />
  <Submission />
  <OCRIndicator />
  <FrankingIndicator />
  <FrankingSurcharge />
  <ZoneIdentifier />
  <CountryIdentifier />
  <Residues />
  <Region />
  <SingleWtUsed1 />
  <ConsignmentReferenceNumber />
  <Department />
  <YourReference />
  <Fees />
  <IssueID />
  <MagazineCode />
  <BookingRefNumber />
  <MAPRefNumber />
  <PosterID />
  <EMailID />
  <YourDescription />
  <CustomerReference />
  <YourNotes />
  <AutoConfirm />
  </DT_OrderContinuity>
  </ns1:MT_OrderContinuity>
  </ns0:Message2>
  </ns0:Messages>
Desired Output: -
  <?xml version="1.0" encoding="UTF-8" ?>
- <ns0:Messages xmlns:ns0="http://sap.com/xi/XI/SplitAndMerge">
- <ns0:Message1>
- <ns2:Mail xmlns:ns2="http://sap.com/xi/XI/Mail/30">
  <From></From>
  <To />
  <Content_Type>text/plain</Content_Type>
  <Content>500 600 700</Content>
  </ns2:Mail>
  </ns0:Message1>
  </ns0:Messages>

Answer 1

Hi Rechard,
The soulution which Anand is suggested is good.
Create an advanced UDF code and set Cache to queue..
//write your code here
String output = "";
for(int i =0; i < SOnoErr.length; i ++)
output = output + SOnoErrr<i> + "";
if ( ! i == SOnoErr.length-1) // this will check the value till 2nd last value
output = output + ""; //this will add the space after eache value
result.addValue(output);
SOnoErr (set the context to root) -
> UDF -
> Content
Regards,
Sarvesh