[postgis] Web Feature Server

[Dave Blasby]

Rob Hranac wrote:
> I think this is a great diagram and gives a very accurate read on the
> situation.  It looks like Vision For New York (and I) will undertake the
> development of the Web Feature Server portion of this (likely in Java),
> starting in about a week or two (as soon as we are officially an OpenGIS
> member and I finish our new site).  My general impression is that this is an
> unfulfilled niche, but if I am stepping on toes or duplicating here, let me
> know.  


If I remember correctly, the WFS requires a complete implementation of
the OpenGIS spec.  

By this I mean, you'll have to be able to handle requests like "Give me
everything whose boundary touches this feature buffered by 25 units". 
In order to do this you'll have to have relate() and buffer()
functions.  

Since the JTS does this (and its in Java), I suggest you talk to Martin
at Vivid Solutions (mbdavis at vividsolutions.com).  They will soon be
releasing technology ("JTS") that gives a full implemention of the
OpenGIS simple features.  This will allow you to give WFS support to
datatypes like shapefiles and the like.  Once JTS is in PostGIS, you'll
just be able to hand-off the requests to the postgis server.  Hopefully
you'll also be able to support something like SDE/Oracle Spatial, but
their definition of certain concepts are different than the OpenGIS
spec.

At some point the future, you'll have to add support for locking and
updating.

Its a *GREAT* project, and should be lots of fun.

Does anyone know of a [announced/proposed] WFS client?

dave

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