Mapping dilemma

Question

I'm stuck with this mapping issue and cannot find a way out on my own. It seems rather simple to look at.
In my source file I have a REF tag with several qualifiers(field-type) such as AB, BC, CD, etc. I want to map the value stored in AB to my target field. It's quite possible that AB could be missing at times and in that case I need to map "".
If I use if(with else), with else mapping to "" it maps the next BC value 'cause there seems like no way to set 'keep suppress values' unlike statement if(without else). But if I use if(without else) it gives an error if AB is missing.
Right now my logic is I compare type = 'AB' using stringEquals and if true, then target field = str1. And before I map to target field I use removeContext and splitByValue. I have keeps = false. But this throws an error for the second item set since AB is missing. Only works when all Item nodes have AB present.
Can someone please tell how I can come out of this mess?
Here's my source file -
Source: x_MT
<?xml version="1.0" encoding="UTF-8"?>
<ns:x_MT xmlns:ns="urn:abc.com/IAM">
<Header>
<Label>H1</Label>
<str>00</str>
</Header>
<Item>
     <REF>
        <type>AB</type>
        <str1>140152</str1>
      </REF><Item>
     <REF>
        <type>BC</type>
        <str1>562</str1>
      </REF><Item>
     <REF>
        <type>CD</type>
        <str1>345</str1>
      </REF><Item>
</Item>
<Item>
     <REF>
        <type>BC</type>
        <str1>562</str1>
      </REF><Item>
     <REF>
        <type>CD</type>
        <str1>345</str1>
      </REF><Item>
</Item>
</ns:x_MT>

Answer 1

Hi Parimala,
Directly pass your source field to exists function.
sourcevalue->exists->(true or false)ifwithelse->'ValueMapping'->target.
in ifwithelse (requires three inputs)
1.if - output of exists function
2.then - source value
3.else -constant, say " " (space)
Define a adavanced user defined function say 'ValueMapping'(input for this is ifwithelse output)  with one input parameter.
for(int i = 0; i < a.length; i++ ){
if(a[ i ].equalsIgnoreCase(" ")||
a[ i ].equalsIgnoreCase("") ) {
result.addValue(" ");
}else{
result.addValue(a[ i ]);
Also set the context of your source field to x_MT.
Regards
Anand
Message was edited by: Anand Torgal