Mapping Problem . or help in UDF

Question

Hi...
      I am having problem in mapping.
I am having 3 messages in the source structure and 1 message in the target structure. 3:1 mapping.
Source Messages:
Message1: Warehouse Details(plant name,warehouselocation)
Message2:Supplier Details(suppid,suppname,leadtime,matname,cost)
Message3:Input(matname,plant,unit,item,itemname,ReqQty,OrderQty,Cost,suppid,suppname,leadtime,date,warehouseloc)
Target Message:
Output
If the Availability field in Message3 !=0, then it should map warehouseloc of message 1 to the Output mesage. or else it should map 0 to the warehouse and map message 2 items to the output message.
Source messages are 0:unbounded.
Could you please help me out in this issue. or else can you please tell how to write the userdefined function for that.
Below is the structure.
Source Message:
<?xml version="1.0" encoding="UTF-8"?>
<ns0:Messages xmlns:ns0="http://sap.com/xi/XI/SplitAndMerge">
   <ns0:Message1>
      <ns1:getWareHouseDetailsResponse xmlns:ns1="http://DefaultNamespace">
         <getWareHouseDetailsReturn>
            <Plant>
               <plantName/>
               <wareHouseLocation>W001</wareHouseLocation>
            </Plant>
         </getWareHouseDetailsReturn>
      </ns1:getWareHouseDetailsResponse>
   </ns0:Message1>
   <ns0:Message2>
      <ns2:GetPreferredSuppliersResponse xmlns:ns2="http://tempuri.org/">
         <ns2:GetPreferredSuppliersResult>
            <ns2:Supplier>
               <ns2:SupplierId>S001</ns2:SupplierId>
               <ns2:SupplierName>TRW</ns2:SupplierName>
               <ns2:LeadTime>1111</ns2:LeadTime>
               <ns2:MaterialName>M001</ns2:MaterialName>
               <ns2:Cost>1000</ns2:Cost>
            </ns2:Supplier>
         </ns2:GetPreferredSuppliersResult>
      </ns2:GetPreferredSuppliersResponse>
   </ns0:Message2>
   <ns0:Message3>
      <ns3:MT_Output xmlns:ns3="http://BlockTest">
         <Material>
            <Matname>M001</Matname>
            <Plant>P001</Plant>
            <Unit>KG</Unit>
            <Item/>
            <Itemname/>
            <ReqQty>5</ReqQty>
            <AvailQty>0</AvailQty>
            <Cost/>
            <Suppid/>
            <Supname/>
            <LeadTime/>
            <Date>12.05.2008</Date>
            <OrderQty>0</OrderQty>
            <WarehouseLoc/>
         </Material>
         <Material>
            <Matname>M002</Matname>
            <Plant>P002</Plant>
            <Unit>PC</Unit>
            <Item/>
            <Itemname/>
            <ReqQty>5</ReqQty>
            <AvailQty>5000</AvailQty>
            <Cost/>
            <Suppid/>
            <Supname/>
            <LeadTime/>
            <Date>12.05.2008</Date>
            <OrderQty>0</OrderQty>
            <WarehouseLoc/>
         </Material>
         <Pcost/>
         <Tcost/>
         <Ocost/>
      </ns3:MT_Output>
   </ns0:Message3>
</ns0:Messages>
Target Message:
<?xml version="1.0" encoding="UTF-8"?>
<ns0:Messages xmlns:ns0="http://sap.com/xi/XI/SplitAndMerge">
<ns0:Message1>
<ns3:MT_Output xmlns:ns3="http://BlockTest">
<Material>M001</Material>
<Plant>P001</Plant>
<Unit>KG</Unit>
<Item></Item>
<Itemname></Itemname>
<ReqQty>5</ReqQty>
<AvailQty>0</AvailQty>
<Cost>1000</Cost>
<Suppid>S001</Suppid>
<Supname>TRW</Supname>
<LeadTime>1111</LeadTime>
<Date>12.05.2008</Date>
<OrderQty>0</OrderQty>
<WarehouseLoc>0</WarehouseLoc>
</Material>
<Material>M002</Material>
<Plant>P002</Plant>
<Unit>KG</Unit>
<Item></Item>
<Itemname></Itemname>
<ReqQty>5</ReqQty>
<AvailQty>0</AvailQty>
<Cost>1000</Cost>
<Suppid/>
<Supname/>
<LeadTime/>
<Date>12.05.2008</Date>
<OrderQty>0</OrderQty>
<WarehouseLoc>W001</WarehouseLoc>
</Material>
</ns3:MT_Output>
</ns0:Message1>
</ns0:Messages>
Edited by: leelaratnam morampudi on Oct 14, 2008 1:13 PM

Answer 1

I think there is no need to use UDF, you can achive this by using IF function.
to make your mapping simple, in your message mapping on MT_Output, right click your mouse and click on duplicate subtree. you will now have two structure in your target.
first one is for if AvailQty != 0 then warehouseloc of message 1 to the Output mesage
and second one is for if AvailQty = 0 now map 0 to the warehouse and map message 2 items to the output message.
try this and let us know if you face any issues.