Using SORT function in mapping

Question

Hi,
I am having trouble getting my head around using the SORT function.
My interface is IDOC to File, The IDOC has a repeating segment (PAYLOAD) that can be of 3 types, either type A, B or C (this is set using a "TYPE" field).
In my file structure I have a repeating "ROW" element which has all of the fields for each row.
I want to group all the Type A data together, the Type B together and the Type C.
I have tried the following mapping on the "ROW" element but it doesn't seem to work:
"TYPE"--"sort"Split By Value (Value Change)--collapseContext--"ROW"
for each of the mappings under ROW I just have fields copied directly.
I think I am doing something wrong.
Thanks.

Answer 1

Hi,
   You could make this mapping
     TYPE --- +----------------+     +----------------+
           |                |     |                |
           | Concat         | --- | mySortFunction | --- NAME
           |                |     |                |
     NAME --- +----------------+     +----------------+
     TYPE --- +----------------+     +----------------+
           |                |     |                |
           | Concat         | --- | mySortFunction | --- ADDR
           |                |     |                |
     ADDR --- +----------------+     +----------------+
   Where source code of mySortFunction is like this:
public void mySortFunction(String[] inputValues,ResultList result,Container container){
     for(int i=0;i<inputValues.length;i++)
          if(inputValues<i>.substring(0,1).equals("A"))
               result.addValue(inputValues<i>.substring(1, inputValues<i>.length-1);               
     for(int i=0;i<inputValues.length;i++)
          if(inputValues<i>.substring(0,1).equals("B"))
               result.addValue(inputValues<i>.substring(1, inputValues<i>.length-1);
     for(int i=0;i<inputValues.length;i++)
          if(inputValues<i>.substring(0,1).equals("C"))
               result.addValue(inputValues<i>.substring(1, inputValues<i>.length-1);
   It is very simple. You concat TYPE whit your data, and then you sort all queue, so you have a new sort queue data. You must only then put out data.