Hi,
I'm forwarding your question to the list. It's best for you to post
> there, rather than contacting any of us directly, so that you get the
> benefit of the GeoTools hive mind :)
>
I'm really sorry about that, I didn't pay attention to the receiver mail
when I clicked on send button :)
> Please see my responses below.
>
> > I found some difficulties, when I test this example :
> PostGIS2Example.java
> > and specially I get this exception in the console:
> > Wizard completed with:Exception in thread "main"
> > java.lang.ArrayIndexOutOfBoundsException: 0
> > at org.geotools.demo.PostGIS2Example.main(PostGIS2Example.java:53)
>
> Can you tell me what version of GeoTools you're using ? The line
> number in the error message doesn't seem to match the source code in
> GeoTools 2.6.x.
>
I'm using 2.6.1 version. I don't think that's a version problem, because I
tested PostGIS2Example.java class with connection parameters that you gave
me, and it works.
> I think that I didn't fill some areatext, or I wrote something wrong.
> > All what I do, is I fill database areatext, user areatext and passwd
> > areatext.
>
> That should be fine (assuming that postgis is running on your local
> machine and listening to the default port number 5432). You don't need
> to fill in schema if your db is in the public schema.
>
> > And I confess that I didn't understand the meaning of those
> > areatext :
> >
> > namespace?
> >
>
> Namespaces can be used to organize your database and avoid conflicts
> between names of tables etc. I don't actually know much about postgis
> / postgresql so I'll defer to someone else to give a better
> explanation or leave you to google it.
>
> > after clicking on next
> >
> > wkb enabled?
> > loose bbox?
> > estimated extent?
> >
> > Please could you explain me the meaning of those aretexts.
>
> Have a look at this page in the GeoServer docs which defines these
> parameters in a bit more detail that the text on the wizard page...
>
> http://geoserver.org/display/GEOSDOC/PostGIS+DataStore
>
> I've just run PostGIS2Example and successfully connected to a database
> so I think the (not very helpful) error you're getting is probably
> from your inputs (assuming that your PostGIS server is running).
>
> You might like to try connecting to this public database to confirm
> that the example app is working...
>
> host: www.refractions.net
> port: 5432
> database: demo-bc
> user: demo
> password: demo
>
> Michael
>
I'm very thankful for your explanations.
Perhaps I didn't detailed perfectly what I want to do. Simply put, I want to
retrieve geometrical data by applying Pl/pgsql queries like : SELECT
ST_Extent(the_geom) FROM towns WHERE town = 'BOSTON';
So, for this I should establish a connexion to a data base, and from my IHM
write queries. Do you have any class model for this?
Thank you in advance.
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