Support for STAC API collection-search extension

[ycespb]

@m-mohr, is it foreseen to support the STAC collection-search extension proposed at https://github.com/stac-api-extensions/collection-search and in particular the retrieval of collection search parameters from a Queryables response advertised via rel=".../queryables" in the /collections response ? We are eager to test this with our latest server implementation.

[m-mohr]

Yes, it would be great to support it in STAC Browser. There are two caveats:

1. I'd need an implementation to test against
2. I'd need funding to work on it (or someone else needs to work on a PR)

[ycespb]

Understood. For point (1), I shared a temporary endpoint by email... I understand the problem (2).

[chiarch84]

We are interested in the collection-search too. I think the actual STAC browser is really missing a way to find what the user needs when there are more collections. The item search is not the same because it returns too many results. Let's say I want to see all DEM collections available in a catalog, I don't want to end up with a list of thousands of items, I would just want to end up in a smaller list of all DEM collections and then I can myself go deeper in exploring the items of the collections I'm interested into.

[m-mohr]

@chiarch84 Could you provide an API implementation? Without an API implementation of said extension there won't be an implementation in STAC Browser, of course.

[chiarch84]

Well, we can add an endpoint to our APIs following the basics specs defined in https://github.com/stac-api-extensions/collection-search

So we could have the following inupt parameters:
bbox
datetime
limit
text

But then I don't know how you would be able to test it since our APIs are behind authentication. You might register to our website maybe.

[m-mohr]

@chiarch84 There's an implementation of Collection Search (including free text search) in the collection-search branch (PR: #317). It would be great if you could test it against your implementation (please also note the recent changes in the collection search extension).

[chiarch84]

Sorry for the late answer @m-mohr
We in fact do NOT have yet an implementation for collection-search. We're still working on it, so I cannot test your extension for now. Sorry.