[Freegis-list] Re: [GENERAL] Map of Postgresql Users (OT)

Arnulf Christl arnulf.christl at ccgis.de
Fri Oct 28 12:44:11 CEST 2005

Claire McLister wrote:
> Good point. This might actually be a problem. Google Maps API requires 
> each server that is serving the map to be registered with Google, and 
> send the corresponding key when making the Javascript request.
> Unless the mirrors can each send their own keys, this will not work.
> Claire

Hi, more cross posting...

Sounds like this task should be solved using WMS and WFS services. 
Google is cool but in order to foster both Open Source and standards 
(OGC) we would suggest to use e.g. MapServer as WMS to produce the maps 
and GeoServer as WFS to manage geomtries. Those OWS services could then 
be included in any OWS client, web interface, etc. Everything is there 
and ready to go, the effort to get it to run should be minimal.

Our clients usually operate PostgreSQL databases with several million 
geometries - those 500 to 600 markers could be hosted on any 
antediluvian box and still be fast. You will know what to about 
mirroring, we would probably suggest to implement P2P - read Ward 
Cunninghams ideas  int he keynote at the Wikimania conference this summer...

We have done the user mmapping Mapbender users with tooltips, direct 
link to the website, etc. You can have a look at it on the project 
homepage http://www.mapbender.org
Its done Wiki-style so that users can enter their own position (use the 
blue flag) or remove or edit any position (use the i-button). No user 
accounts yet but security and authentication is in place and have just 
not yet been necessary (still waiting for spatial spam...)

We will spread word about spatial data management using 
PostgreSQL/PostGIS with MapServer, GeoServer etc. at the 
http://www.opendbcon.net (database fundamentals) on Nov. 8. and 9. in 
Frankfurt/Main, Germany.

This idea is on short notice but i would be really very excited if i 
could show the map there! We suggest the following alterantive actions:

- It should be easy to add a geometry_column to the existing PostgreSQL 
database which alredy has the positions. Add a GeoServer WFS to access 
the geomtry and a MapServer for WMS display.
- Alternatively send Paolo or us or both the geo-positions and we add 
them to our existing OWS infrastructure (that will takt a few hours of 
work only).

Beause there is not so much time until the conference this would just be 
be a prototype which should in the long run move to the PostgreSQL or 
PostGIS homepage or Wiki or both. Yet another idea:  Mediawiki (the 
Wikipedia software) is also right now introducing geometries to the Wiki 
database - obviously also using PostgreSQL/PostGIS. This would be 
another cool multiplier.. and there we also meet with Google again.

Best, Arnulf.

> On Oct 26, 2005, at 6:02 PM, Robert Treat wrote:
>> On Wednesday 26 October 2005 18:24, Claire McLister wrote:
>>> On Oct 26, 2005, at 2:08 PM, Brent Wood wrote:
>>>> There has recently been a thread on the Postgres user list about a web
>>>> based postgres user/developer map. Claire has built a Google map based
>>>> system, getting locations from IP addresses.
>>> Just so people know, this map can be found at:
>>>   http://www.zeesource.net/maps/map.do?group=456
>> I'm going to loop in a few more people here :-), namely the pg web 
>> team who
>> will probably be able to give pointers on site integration. One thing 
>> to keep
>> in mind is that the postgresql website is statically mirrored onto a 
>> number
>> of different servers, so any solution we come up with will ideally allow
>> itself to that. I believe a google maps system can do this (we can 
>> mirror the
>> javascript code and the location/data file on all mirrors and the 
>> google map
>> will work with it as is), which is why I originally went with that 
>> type of
>> solution.
>> -- 
>> Robert Treat
>> Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL
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