This looks interesting, I wonder how hard it would be to merge in the work
I did on Joining datastores that could create "views" across non-jdbc
datastores so you could add a CSV to a geometry in another store, I should
dig that code out and look at it again. Maybe a christmas lockdown project?

Ian

On Tue, 3 Nov 2020 at 18:19, Jim Hughes <jhug...@ccri.com> wrote:

> Hi all,
>
> At various times, Jody and I have chatted about having a "CQL View" in
> GeoServer (or something similar akin to the SQL Views) that'd leverage
> the Transform module and allow one to add columns to a FeatureSource
> based on expressions.  Such expressions could use existing or custom CQL
> functions and that'd open a world of possibilities.
>
> Last week, I asked Jody about this idea again and he indicated that one
> would really just need to write a DataStoreFactory.  I banged out an
> initial implementation as a starting place for the conversation.  This
> implementation provides a way to project down to a subset of attributes
> as well as add new columns/attributes to a FeatureStore.
>
> If folks like it as-is, I'd be happy to add unit tests, and
> documentation wherever we see fit.  Thanks in advance for some feedback
> on this idea!
>
> https://github.com/geotools/geotools/pull/3196/files
>
> Cheers,
>
> Jim
>
>
>
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>


-- 
Ian Turton
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