Null value in Array

RE: Null value in Array

davids735 — Mon, 05 Dec 2016 20:53:21 GMT

wherecontains(null, ri!yourArray) will return the locations of all the nulls as a list of integers. You can place this inside the index() function to then apply more logic to the results

RE: Null value in Array

chetany — Sat, 03 Dec 2016 17:42:34 GMT

If you want to just check if the array variable is itself null or Empty, you can use:
or(local!myarray="", length(local!myarray)=0). This will work for any type of primitive array.

If your array has few elements which are null, you can also use the reject function.
Example: reject(fn!isnull, {1,3,2,null, 5}) . This will return {1,3,2,5}

isnull() does not work on arrays as expected as you observed - the reason is that sometimes an array maybe empty but not null, When an array is empty isnull() will return false. And it is common in SAIL UI to set array variables to null or empty list.
Either may happen, but in both the cases the isnull() behaves differently. It will be false for empty list, but true when it is actually null.
So, its better to avoid using isnull to check for nullability of array variables.

RE: Null value in Array

rohandhondilalk — Sat, 03 Dec 2016 15:24:24 GMT

@chandrasekharg, @rishub, @mschmitt, @sparshs, @sikhivahans : Thank you all for the response .

RE: Null value in Array

rohandhondilalk — Sat, 03 Dec 2016 15:23:00 GMT

Hi ramanjaneyulut, Thanks !!. It worked . :)

RE: Null value in Array

rohandhondilalk — Sat, 03 Dec 2016 14:20:10 GMT

@sikhivahans, we had applied and it was working at run time. When we had implemented the same in the designer mode, it was not working as expected.

RE: Null value in Array

chandu — Sat, 03 Dec 2016 10:29:20 GMT

if you want just to have true or false for null value in array can't we use
any(fn!isnull,arrray)?

RE: Null value in Array

Rama Thummala — Fri, 02 Dec 2016 21:53:38 GMT

You can check by using below code....
if(or(isnull(ri!array),length(ri!array)=0),true statements, false statements )

RE: Null value in Array

sparshs — Fri, 02 Dec 2016 20:30:33 GMT

you can do like this if(OR(rule!APN_isEmpty(ri!array),length(ri!array)=0)).

RE: Null value in Array

Mike Schmitt — Fri, 02 Dec 2016 19:36:49 GMT

In case you mean you want to find a null value in an array of other data, you can use a combination of where() and apply(), as in the following example code:

with(
array: {"a", "b", null(), "d"},

where(
apply(fn!isnull, array)
)
)

RE: Null value in Array

sikhivahans — Fri, 02 Dec 2016 17:54:00 GMT

@rohandhondilalk Maybe worth applying a length(ri!array)=0 as secondary level check?

RE: Null value in Array

rishub — Fri, 02 Dec 2016 17:51:54 GMT

please Try rule!APN_isEmpty