On Mon, May 28, 2012 at 11:01 AM, Andrea Aime
<[email protected]>wrote:
> On Mon, May 28, 2012 at 6:29 PM, Justin Deoliveira <[email protected]>
> wrote:
> > Hey Andrea,
> >
> > Wondering if this change warrants some further discussion since as I
> > understand it this will result in a <srs> element not being encoded in
> many
> > cases. Which perhaps for storing configuration might not be an issue
> since
> > we do have the native crs wkt but it could have negative side affects for
> > restconfig in which clients may be expecting a srs.
>
> I've made the change straight away because of two reasons:
> - it makes the GUI unusable if you have lots of those layers and need to
> change bits in the configurations (the delay happens at each save, not
> only when doing the first insert)
> - rest-config clients need to be prepared to accept WKT anyways, since
> not all .prj files in the world can be matched ot a EPSG code, even
> after a full scan
>
Yup, makes sense, aware of the problem, just don't think the fix is that
cut and dry.
>
> Impact wise, it affects shapefiles and rasters
> (databases and WFS come out with full EPSG codes).
>
> Alternatives I see:
> - have a configuration option to switch between the GUI unfriendly,
> but REST friendlier behavior
> - keep some sort of central cache of the mappings, so that we
> can avoid doing full scans each time, the delay only happens
> the first time
>
This seems to make sense to me. In CRS.lookup keep a set of most recently
looked up CRS objects as a secondary cache, my guess is that most systems
are probably using a handful of different CRS's and like you say, the price
is paid only once.
>
> Cheers
> Andrea
>
> --
> Ing. Andrea Aime
> GeoSolutions S.A.S.
> Tech lead
>
> Via Poggio alle Viti 1187
> 55054 Massarosa (LU)
> Italy
>
> phone: +39 0584 962313
> fax: +39 0584 962313
> mob: +39 339 8844549
>
> http://www.geo-solutions.it
> http://geo-solutions.blogspot.com/
> http://www.youtube.com/user/GeoSolutionsIT
> http://www.linkedin.com/in/andreaaime
> http://twitter.com/geowolf
>
--
Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.
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