Complex Message Mapping for a Lookup in PI 7.1

Question

Hi
I am having difficulty with a complex mapping in PI that I was wondering if someone could help me with.
The issue is that I am doing a Stock Lookup where you enter an item code and retrun an xml with all the stock for Warehouses, Local regions and Other regions.
The problem is with the Other Regions. I have done a mapping that produces a new Other Regions node for each store returned...
<?xml version="1.0" encoding="UTF-8"?>
<StockLookupResponse><Header><SessionID>Constant</SessionID></Header>
<OtherRegions><Region>Dunedin</Region><Stores><Branch>5115</Branch><Description>222 Waterloo Road</Description><StockLevel><AllocatedStock>2</AllocatedStock></StockLevel></Stores></OtherRegions>
<OtherRegions><Region>Dunedin</Region><Stores><Branch>5117</Branch><Description>1 Waterloo Road Dunedin</Description><StockLevel><AllocatedStock>26</AllocatedStock</StockLevel></Stores></OtherRegions>
<OtherRegions><Region>Christchurch</Region><Stores><Branch>5222</Branch><StockLevel><AllocatedStock>27</AllocatedStock></StockLevel></Stores></OtherRegions>
</StockLookupResponse>
What I need to do is create a single OtherRegions node for each region and then show the stores within this region like this
<?xml version="1.0" encoding="UTF-8"?>
<StockLookupResponse><Header><SessionID>Constant</SessionID></Header>
<OtherRegions><Region>Dunedin</Region>
<Stores><Branch>5115</Branch><Description>222 Waterloo Road Dunedin</Description><StockLevel><AllocatedStock>2</AllocatedStock></StockLevel></Stores>
<Stores><Branch>5117</Branch><Description>1 Waterloo Road Dunedin</Description><StockLevel><AllocatedStock>26</AllocatedStock</StockLevel></Stores>
</OtherRegions>
<OtherRegions><Region>Christchurch</Region><Stores><Branch>5222</Branch><StockLevel><AllocatedStock>27</AllocatedStock></StockLevel></Stores></OtherRegions>
</StockLookupResponse>
I have successfully created the OtherRegions node for each region but I only ever get one store return for each region. No matter what I do I cannot seem to get the full list of stores.
The sample XML coming in is
<?xml version="1.0" encoding="UTF-8"?>
<ns0:StockLookup_JDBC_response xmlns:ns0="urn:bridgestone:bpcs:logistics">
   <StoredProceedureSelect_response>
      <response_1>
         <row>
            <ITEM_CODE>484855A</ITEM_CODE>
            <RECORD_TYPE>O</RECORD_TYPE>
            <REGION_CODE>2</REGION_CODE>           
            <STORE_ID>5115</STORE_ID>           
            <LOCATION_CODE/>           
            <ON_HAND>555</ON_HAND>           
         </row>
         <row>
            <ITEM_CODE>484855A</ITEM_CODE>
            <RECORD_TYPE>O</RECORD_TYPE>
            <REGION_CODE>2</REGION_CODE>
            <STORE_ID>5117</STORE_ID>
            <WHS_FLAG>0</WHS_FLAG>
            <ON_HAND>6</ON_HAND>
         </row>
         <row>
            <ITEM_CODE>484855A</ITEM_CODE>
            <RECORD_TYPE>O</RECORD_TYPE>
            <REGION_CODE>6</REGION_CODE>
            <STORE_ID>5222</STORE_ID>
            <LOCATION_CODE/>
            <ON_HAND>2</ON_HAND>
         </row>        
      </response_1>
   </StoredProceedureSelect_response>
</ns0:StockLookup_JDBC_response>
To get the Other regions to work I passed on the record type and region code into a UDF:
public void createOtherRegion(String[] recordType, String[] regionCode, ResultList result, Container container) throws StreamTransformationException{
String prevRegionCode = new String("");
for (int i = 0; i < recordType.length; i++)
     if (!recordType<i>.equals("O"))
         result.addValue(false);
     else
          if (prevRegionCode.equals(""))
               result.addValue(true);
               prevRegionCode = new String (regionCode<i>);
               else if (prevRegionCode.equals(regionCode<i>))
                    result.addValue(false);
               else
                    result.addValue(true);
                    prevRegionCode = new String (regionCode<i>);
This successfully create a new Other region and displays a single store within the region. Unfortunately by trying to map the STORE_ID to the Stores node (1.. unbounded)  only one store is ever returned.
I have tried changing the context but it will only retrun one store.
Haas anyone else come across a similar problem? Any help appreciated.

Answer 1

This problem was resolved by using sort and sortByKey in order to preserve the context. UDF was not helpful in the end.
I am closing this thread.