Question
IQera
MU
Last activity: 2 Jun 2023 0:11 EDT
Page list is empty when trying to loop
Hello,
I am trying to loop through a page List but my when condition is being evaluated to false to check if it is empty before looping, although in my clipboard I have 2 items in my page list.
Here is the data transform where I am trying to loop through the page list
Here is the pages and classes properties
My pagelist is of type IQ-Work-Test.
Can someone help please?
Thanks
JPMC
IN
@User16730164 can you set the return value of lengthofpagelist to a param and check in tracer the value of it.
IQera
MU
Bits in Glass
IN
@User16730164 Please define the pagelist in pages and classes like this and try
Pagelist Code-Pega-List
Pagelist.pxResults() IQ-Work-Test
IQera
MU
Bits in Glass
IN
@User16730164 in your when condition, please make the expression >=1 instead of !=0.
Ordina
NL
@Anoop Krishna So before answering this question, I'm curious why you're doing it in the first place. If a pagelist has no results, the loop will not execute any code. I also wouldn't expect that if you omit the check, doing a check on the pagelist length in a subsequent rule will handle it differently.
If you deem it necessary for another reason (educate me please :)), then I'd always use @LengthOfPageList(PageList.pxResults) > 0. It's the same as >= 1 if an integer is used, it just has different semantics. It will also perform slightly better since it's only one arithmetic operation.
Updated: 2 Jun 2023 0:11 EDT
Bits in Glass
IN
@BasRulesMatter! If you see the expression he used, it is !=0, not >0 as you mentioned. ! =0 is not an ideal expression to use, so just correcting the expressions and page definitions before fixing the issue. He mentioned that 2 pages are already there in the clipboard. My next question would be to post a screenshot of clipboard results of this pagelist. Please check the question and his comments once. >=1 and !=0 are having 2 arithmetic operations.