mapping: how to send the LAST value of a queue

[former_member440449]

Hi Gurus,

I need a target field to receive the last value of a source field, as you can see below:

Source:

SourceSegment(1..unbounded)
->SourceField(0..1)

Target:

TargetSegment(1..1)
->TargetField(0..1)

I have an example asi this:

<SourceSegment>
<SourceField>A</SourceField>
</SourceSegment>

<SourceSegment>
<SourceField>B</SourceField>
</SourceSegment>

<SourceSegment>
<SourceField>C</SourceField>
</SourceSegment>

So, what I need is to send the LAST value in the TargetField which will be generated only once:

<TargetSegment>
<TargetField>C<TargetField>
<TargetSegment>

Is this possible without an UDF?

[Former Member · Accepted solution]

Write a simple Queue cached udf and set the context of source element to top node.

public void lastvalue(String[] a,ResultList result,Container container){
 int x;
String y = "";
x = a.length;
y = a[x-1];
result.addValue(y);
}

[baskar_gopalakrishnan2 · Accepted solution]

If you want still to make the code elegant ... Please simply this way

public void lastvalue(String[] a,ResultList result,Container container){
  result.addValue(new String(a[a.length-1]);
 }

[Former Member · Accepted solution]

Hi,

You will not be able to do this using the standard functions. Use the UDF examples already provided above. Use the queue function.

Regards

[VijayKonam]

get the array size in the UDF and assign the last element of the array to the target element. Something like -

String len = input.length;

output = input[len-1];

VJ