Stats for multiple categories in one API call

[neelabhtiwari]

Issue Summary

Sendgrid API v3 Reference for categories/stats endpoints states that API call can be made to get stats for upto 10 categories.
However, it does not provide any reference for how to make that API call. I checked the code for addQueryParam here
https://github.com/sendgrid/java-http-client/blob/main/src/main/java/com/sendgrid/Request.java
which takes categories as only key-value pair. How are we supposed to pass "upto 10 categories"?

Steps to Reproduce

1. Use categories/stats endpoint to get stats for 10 categories in the same API call.

Code Snippet

# paste code here

request.setMethod(Method.GET);
request.setEndpoint("categories/stats");

request.addQueryParam("categories", "qa2");   //how to pass multiple categories here

### Exception/Log

paste exception/log here

### Technical details:
* java-http-client version: Sendgrid 4.6.4
* java version: JDK 14

[thinkingserious]

Hello @neelabhtiwari,

You would call the addQueryParam function multiple times, like so.

Please let me know if that solves your issue. Thank you!

With best regards,

Elmer

[neelabhtiwari]

Hi Elmer,

Apologies for late reply but I had actually tried this already. This doesn't work. The addQueryParam will just replace the previously set category with the latter one. Please see the following example -

request.addQueryParam("categories", "dev");
request.addQueryParam("categories", "stage");
request.addQueryParam("categories", "prod");

Expected would be to get category stats for all three categories but it would just replace the category value with the latest one i.e. prod.

Thanks & Regards,
Neelabh

[JenniferMah]

This issue has been added to our internal backlog to be prioritized. Pull requests and +1s on the issue summary will help it move up the backlog.

[neelabhtiwari]

+1
Would you like us to raise a priority support request on this feature from our enterprise account? Let me know if that helps in moving this up the backlog.