[postgis-devel] Adding support for GML 3.2.1 (ISO 19136)

[Peter Hopfgartner]

--------Olivier Courtin <olivier.courtin at oslandia.com> wrote--------
Subject: Re: [postgis-devel] Adding support for GML 3.2.1 (ISO 19136)
Date: 15.09.2010 11:20

>
>On Sep 15, 2010, at 10:57 AM, Peter Hopfgartner wrote:
>
>Hi Peter,
>

Hi Olivier,

>> The european INSPIRE initiative mandates GML 3.2.1, which should be  
>> identical to ISO 19136, as the correct version for data exchange.
>>
>> What would it mean to adapt the current PostGIS GML 3.1 export to  
>> GML 3.2.1?
>>
>> I had a look at
>http://portal.opengeospatial.org/files/?artifact_id=26765 
>> .
>>
>> An issue might be that gml:id is mandatory. Then there are small  
>> corrections to the XML Schema all over the place
>
>Thanks for this input :)
>
>To begin, PostGIS 'only' handle geometry part of GML. and not the  
>whole GML document.
>
>So most of the changes here seems not really PostGIS care but rather  
>the WFS engine who deal
>with it (GeoServer, TinyOWS...)
>

Indeed, this makes things much simplier.

>For now ST_GeomFromGML is already able to handle GML 3.2 namespace if  
>present
>in the GML geometry fragment.
>
>> and collection types have been deprecated.
>
>
>Humm what do you mean there ?
>For information, we handle SFS GeometryCollection as GML MultiGeometry  
>for now
>
Well, I've quoted directly from the document referred to above. I do not know at the moment what this means at translated to the XML schema.
>
>Did you seen any geometry change in GML schema beetween 3.1.1 and  
>3.2.1 ?

I will try to make some tests in the next days, using the official ISO schemas. I started today to investigate this topic, so I do not have a lot of concrete information right now.

>
>
>--
>Olivier
>
Peter
>
>
>
>