[mapserver-users] Re: Join from SHP file to PostgreSQL table

[Fawcett, David (MPCA)]

Your client has some pretty custom requirements.  How current does the data published by the Web server need to be?  Could it be refreshed nightly or hourly, or do changes to the data have to be immediately reflected in on the Web?

From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Flavio Carmo
Sent: Monday, November 29, 2010 1:49 PM
To: Stephen Woodbridge
Cc: mapserver-users at lists.osgeo.org
Subject: Re: [mapserver-users] Re: Join from SHP file to PostgreSQL table

Hi,

Sorry, but i cant upload the shapes to postgres. The shapefiles are modified using arcview and the data in the postgres is modified using a custom desktop software that my client uses for about 5 years. The software open the shapefiles, then using a ODBC connection with postgres, make the join in memory and shows the information for each geometry.

I cant undo this situation, so, my client propose to me to uses a opensource solution to also make this join in a WMS service. He knows Geoserver and Mapserver. Geoserver cant do this too, so i've hoped that mapserver could be a solution.

Regards,

Flávio Carmo

On Mon, Nov 29, 2010 at 16:35, Stephen Woodbridge <woodbri at swoodbridge.com<mailto:woodbri at swoodbridge.com>> wrote:
On 11/29/2010 2:21 PM, flaviocarmo wrote:

Hi,

Thanks all for your responses. Im a novice in Mapserver so, after reading,
now i know that:

- I cant use a JOIN to shown only geometrys with the CODE field stored on
Postgres (or another Database) because joins cannot modify the look of a
map;

- I need to use a template always to show the queries results;

- Case-sensitive fields can be a problem in a query with mapserver;

- The "PG:" string for was my mistake. I missed in the mail, but was in my
MAP file. Sorry.

Now what? There isnt a way to solve my issue? My client needs a opensource
solution to deliver his data. His current solution (ESRI ArcGIS Server) is
too expensive to buy another license, so he asked for a solution with the
same quality, but opensource.

There is a way to workaround this?

Favlio,

I would put all the data in a postgres/postgis database and display it from there. There is a simple shapefile loader:  shp2pgsql. In this setup you can easily join tables, create inherited tables if you are working with data like streets.shp for multiple countries so the parent table can be used to seamlessly display the multiple streets tables as a single layer in mapserver.

He may have to rethink his work flow a little because the tools are different, but this would be the case regardless if he is changing the software that he is using.

-Steve W

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