Pattern - Gracefully exit pattern if Table has 0 results

[hz2]

In a Discovery Pattern, how can I check if a Table has 0 results?

Steps:

1) Parse a file and store the results in a Table. Se

2) Use a Match operation to check if an array/table has 0 results. Stop execution of the pattern extension if there are no results. 

I tried this, but it does not work as expected. Only if the 

Operation: Match

$_rnr_scheduled_tasks_ is Empty

I've also tried:
$_rnr_scheduled_tasks_[] is Empty

and

$_rnr_scheduled_tasks_[*] is Empty

None of these conditions cause the Pattern to gracefully exit. Any idea on how to proceed?

[Fabian Kunzke · Accepted solution]

Oh, alright, my bad, i sometimes am a bit slow.

I never had to do that before, but my guess is, that you could check for the first line in your table to be present. Could you check if

$_rnr_scheduled_tasks_[1]."some_column" is Empty

works? Ideally use a column that is always filled. The issue here is, that - as far as i understand patterns - the "isEmpty" only checks for the string based value of a variable. This means any table with columns - no matter if they have an value - is no longer empty (this at least is my interpretation of why it may not work in your case).

Also sorry for my daylong wait, i don't get notifications in time by the community at the moment...

Regards

Fabian

[hz2]

Thanks for that. Checking to see if a column is empty is a viable option for me, so that will work.

And I think you're spot on that "isEmpty" only checks for the string based value of a variable. 

I'll go with your suggestion and if I need to get more precise, I can do something with Eval().

Your help is greatly appreciated! Thanks