How to map IDoc segment with qualifiers

Question

Hi everyone!
I have the following problem: In an IDoc of type DESADV01 there can be several segments of type E2EDS01. Each segment has a different qualifier, which is the value of the field SUMID in this case. My target structure (type EDIFACT) now has several segments, each again with a sort of qualifier. Now I have to map the values of certain source segments to the respective target segments.
Exaple (in XML format):
Source
  <E1EDS01 SEGMENT="1">
    <SUMID>021</SUMID>
    <SUMME>0000000001.000</SUMME>
    <SUNIT>KGM</SUNIT>
  </E1EDS01>
  <E1EDS01 SEGMENT="1">
    <SUMID>022</SUMID>
    <SUMME>0000000001.000</SUMME>
    <SUNIT>KGM</SUNIT>
  </E1EDS01>
Target
  <S_MEA>
    <C_C502>
      <D_6313>N</D_6313>
    </C_C502>
    <C_C174>
      <D_6411>KGM</D_6411>
      <D_6314>1</D_6314>
    </C_C174>
  </S_MEA>
  <S_MEA>
    <C_C502>
      <D_6313>G</D_6313>
    </C_C502>
    <C_C174>
      <D_6411>KGM</D_6411>
      <D_6314>1</D_6314>
    </C_C174>
  </S_MEA>
(i have omitted several details here, but I'm only interested in the general procedure anyway).
So in general the source segment with qualifier "021" should be mapped to a target structure with qualifier "N" etc.
How can this be done using standard XI mapping techniques?
Regards, Joerg

Answer 1

Hi everyone!
Thanks for your input data - unfortunately this wasn't quite what I was looking for. However I thik I solved my original problem and I just wanted to share this solution with you - maybe it helps others, maybe some of you have suggestions what I could do differently.
To sum up the requirement: There can be multiple input segments, each with a certain qualifier. These input segments have to be mapped to the target segments, respectively - however, the qualifiers change. There can be several segments with qualifiers that do not match the requirement, and required segments might be missing.
So here's what I came up with:
Use the qualifier of the source segments as an input to a <b>FixValues</b> function. In this function, map the desired qualifiers to the value <b>true</b>, use <b>false</b> as the default value. Map the output of the <b>FixValues</b> function to a <b>createIf</b> function and use this to create the desired output segment. This way, for each of the required segments, one target segment will be created. All other segments (with unwanted qualifiers) will be removed.
So far, this technique worked for me - do you have improvements/suggestions?
Regards, Joerg