[postgis-users] Geotools, Geoserver and PostGIS integration

[Paul Ramsey]

The WMS spec includes support of attribute query. The only "drawback" is
that the query has to round-trip to the server to get the answer. In
light of the positive aspects of WMS over WFS (simplicity, network
bandwidth requirements, speed) it seems pretty reasonable.

Peter Aberline wrote:
> 
> Paul,
> 
> Thanks for your comments. It may be that a WMS based system might be the
> most practical, but I was wanting the archiecture to support attribute
> querying
> of features on the map, rather than just a simple static display.
> 
> To the best of my knowledge, this couldn't be supported by a WMS system
> unless
> you got into the game of generating html image maps overlaying feature?
> 
> peter.
> 
> Paul Ramsey <pramsey at refractions.net>@postgis.refractions.net on 19/04/2002
> 16:07:52
> 
> Please respond to postgis-users at postgis.refractions.net
> 
> Sent by:    postgis-users-admin at postgis.refractions.net
> 
> To:    postgis-users at postgis.refractions.net
> cc:
> bcc:
> 
> Subject:    Re: [postgis-users] Geotools, Geoserver and PostGIS integration
> 
> My general thought is that the best web-based OpenGIS system would be to
> use WMS for 95% of the rendering, only start hitting WFS for when
> feature editing becomes required. So you might want to include Mapserver
> in your list of candidate technologies.
> 
> P.
> 
> Peter Aberline wrote:
> >
> > Dear Geotools, Geoserver and PostGIS mailing lists,
> >
> > I've posted this message to all three lists, appologies for cross
> posting.
> > I'm currently investigating various options for developing a web based
> > mapping system, and geotools, geoserver and postgis seem to have
> > the greatest scope for intergration. I would like to ask the groups'
> > opinion of using them in an integrated way for a web based mapping
> > system.
> >
> > My current thinking is around a system that stores spatial and attribute
> data in
> > PostgreSQL using PostGIS, having this data accessed via a Geoserver
> > application server, and then using Geotools to render it in a client
> > side browser applet.
> >
> > This raises some immediate questions:
> > * Geotools would probably need new supporting code to handle
> >   the WFS request/response interaction. True?
> >
> > * Is the GML code in Geotools2 sufficiently developed to be able to
> render
> >   data that has been sourced from a GML based data source?
> >
> > * Although WFS doesn't currently specify support for requesting raster
> datasets,
> >   would support for this in all tiers difficult to add? This support
> would
> >   obviously be in an out-of-standard way until WFS matured enough to
> >   specify an interaction.
> >
> > Obviously any new code developed to add the kind of functionality I
> needed could
> > be contributed back to the projects, if it was considered valuable.
> >
> > Does anyone know of any groups that have attempted to use these projects
> in this way?
> > I'ld be keen to hear of anyones experiences, or opinions about the likely
> success
> > of such a project.
> >
> > many thanks,
> > Peter Aberline.
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> --
>       __
>      /
>      | Paul Ramsey
>      | Refractions Research
>      | Email: pramsey at refractions.net
>      | Phone: (250) 885-0632
>      \_
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-- 
      __
     /
     | Paul Ramsey
     | Refractions Research
     | Email: pramsey at refractions.net
     | Phone: (250) 885-0632
     \_