we have a need here in which we want to upload expressions to pipeline dynamically.
Is there any API out there which can upload expressions file dynamically on pipelines ?
Can expressions files be loaded from file system ? currently, it cant support expression while we upload expression files.
Answers will be much appreciated here…
Thanks…
Rishi
Hi @nirupama,
There’s a group by functionality on the Aggregate snap that will allow you to have the input data in a group after you’re done with your calculations (Aggregation).
Another option is to use a Group by N snap, with 0 in group size which will add all incoming objects to one array. After that, you’ll need to add a Mapper snap with the following expression:
$array.reduce((acc, curr)=> acc + curr, 0)
You probably going to need to amend the expression per your needs. For example if you have an array of objects, and you need to calculate a specific field (ex. “Age”) the expression will look something like this:
$array.reduce((acc,curr)=> acc + curr.Age,0)
Regards,
Bojan
Hi @bojanvelevski ,
Thanks you. I tried with group by N(It does batching randomly), but I want to group them based on 3 fields say $A,$B,$C and then I want to do SUM on other field $D.Is there any such functionalities available in snaplogic using mapper?
Same thing applies to your use case, just the grouping is a little bit different and you’ll have to use Group by Fields
