Okay so kind of like a more complete schema description, the ability to get
"distribution" information about the attribute values (min, max, unique
values, equal breaks, etc...). It is a useful bit functionality that is not
covered by the protocols to my knowledge.
Aside: For your specific example that could be represented in XML Schema
(if you did indeed have a limited set of valid region), but the general
case is not addressed.
--
Jody Garnett
On 15 March 2018 at 18:57, Alex McKeown <[email protected]> wrote:
> I'm thinking here of the CQL/ECQL filters that can be used in WMS GetMap
> and WFS GetFeature requests (http://docs.geoserver.org/
> latest/en/user/filter/syntax.html).
>
>
>
> For instance a layer might have a property called 'region' which can be
> filtered by three potential string values "pacific", "indian", and
> "southern". Adding "&CQL_FILTER=region%20LIKE%20'pacific'" to your
> request would get only the subset of data located in the pacific region.
>
>
>
> Under the proposed module a user could make a "getFilters" request to find
> out that 'region' is a potential property to filter on with type string,
> and make a "getFilterValues" request to find out that the potential values
> of 'region' are "pacific", "indian", and "southern".
>
>
>
>
>
> *From:* Jody Garnett [mailto:[email protected]]
> *Sent:* Friday, 16 March 2018 12:09
> *To:* Alex McKeown <[email protected]>
> *Cc:* [email protected]
> *Subject:* Re: [Geoserver-devel] Available Filters Community Module
> Proposal
>
>
>
> I am fine with a community module, but I am not sure I understand about
> filters? Do you mean function reference? Schema attributes overview? WFS
> predefined queried?
>
> On Thu, Mar 15, 2018 at 6:02 PM Alex McKeown <[email protected]>
> wrote:
>
> Hi,
>
> I think this may have been one of the posts that was missed because of the
> sourceforge mailing problems. I should add that we already have something
> similar running off a fork, though we need to make it much more generic.
> Any thoughts? Happy to discuss further.
>
>
>
> Cheers,
>
> Alex
>
>
>
> *From:* Alex McKeown
> *Sent:* Monday, 22 January 2018 15:10
> *To:* '[email protected]' <geoserver-devel@lists.
> sourceforge.net>
> *Subject:* Available Filters Community Module Proposal
>
>
>
> Hi all,
>
> I would like to propose a community module to add a RESTful interface for
> describing the filters available for a particular layer. This would entail
> two new request types, "getFilters", and "getFilterValues". A "getFilters"
> request would return a list of the available filters, with their names and
> types. A "getFilterValues" request would describe the valid values of a
> particular filter. This would make it easier for users to discover the
> filter functionality available to them.
>
>
>
> Regards,
>
> Alex
>
>
>
> ---
>
>
>
> Alex McKeown
>
> Software Engineer
>
> Australian Ocean Data Network (AODN)
>
> University of Tasmania
>
> Private Bag 110
>
> Hobart TAS 7001 Australia
>
> E: [email protected]
>
> W: https://portal.aodn.org.au
>
>
>
>
>
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> --
>
> Jody Garnett
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