Support for /$count operation

[Tiberriver256]

https://docs.oasis-open.org/odata/odata/v4.01/odata-v4.01-part1-protocol.html#sec_RequestingtheNumberofItemsinaCollect

Is there existing support for this? I'm not seeing it in the output and can't find any parameters to enable it.

I'm using the tools/V4-CSDL-to-OpenAPI.xsl

[ralfhandl]

Hi Micah,

Currently there are no path items produced for /$count requests. The OpenAPI files only describe the "basic" requests and are intended as a gentle introduction, not a full enumeration of all possible requests.

If you see the need for optionally adding these, please contribute this feature.

Thanks in advance
Ralf

[Thorbenl]

Hey @ralfhandl :)
Is there any chance you and the team will be working on this? It would be a much appreciated endeavor, that would make our lives here a lot easier :)

[ralfhandl]

Hi @Thorbenl,

Could you please explain how this would make your lives easier?

Background for my question: a typical use for the count of a collection is showing a table with some rows and a heading containing the total number of rows:

This is best implemented by requesting the initial set of rows plus the total count in one request

GET /Products?$count=true&$top=20

Sending two requests, one for the top 20, and one for the total count, is IMHO an anti-pattern. Which is why the tool does not advertise the /$count operation and only advertises the combined GET with $top and $count=true.

Thanks in advance

[Thorbenl]

Hi @ralfhandl
First and foremost, thanks for the elaborate answer. I do think the frontend we use is just using it wrong then, since the "issue" is that the frontend does the /$count, instead of doing it on the entity as you mentioned - /products?PAGINATIONSTUFFF&$count=true

Thanks for making that clear - I do not think we need anything here then, but change the frontend and tell the engineers to change it to the more streamlined approach.