Brett, that's great!
Rini
From: Brett Walker [mailto:brett.wal...@geometryit.com]
Sent: Wednesday, 6 June 2012 11:22 AM
To: Angreani, Rini (CESRE, Kensington); geotools-devel@lists.sourceforge.net;
s...@lists.csiro.au
Cc: g.willia...@bom.gov.au
Subject: RE: Missing srsName from geometry
Hi Rini,
It is not a postgis bug. It is not reading the manual problem. The missing srid
information can be included in the create view statement.
For the relevant information see section 4.3.4 in the postgis v2.0 manual for
the details [1].
Brett
[1] http://postgis.refractions.net/download/postgis-2.0.0.pdf
From: Brett Walker
Sent: Wednesday, 6 June 2012 1:01 PM
To: 'rini.angre...@csiro.au'; geotools-devel@lists.sourceforge.net;
s...@lists.csiro.au
Cc: g.willia...@bom.gov.au
Subject: RE: Missing srsName from geometry
Hi Rini,
I tracked down my problem.
In my postgres (v9.1.3)/postgis (v2.0) database, in the geometry columns view
(it is a view) it reports that the srid for the view that I am querying is 0.
Thus it cannot be resolved. This is the reason that it is missing in the xml
that I am generating.
The base table (it is a table) for the view reports its srid correctly.
Thus it is a postgis bug. Is this a reasonable conclusion?
Brett
From: rini.angre...@csiro.au<mailto:rini.angre...@csiro.au>
[mailto:rini.angre...@csiro.au]<mailto:[mailto:rini.angre...@csiro.au]>
Sent: Tuesday, 5 June 2012 1:22 PM
To: Brett Walker;
geotools-devel@lists.sourceforge.net<mailto:geotools-devel@lists.sourceforge.net>;
s...@lists.csiro.au<mailto:s...@lists.csiro.au>
Cc: g.willia...@bom.gov.au<mailto:g.willia...@bom.gov.au>
Subject: RE: Missing srsName from geometry
Hi Brett,
In AbstractGeometryTypeBinding:
public Object getProperty(Object object, QName name)
throws Exception {
Geometry geometry = (Geometry) object;
if ("srsName".equals(name.getLocalPart())) {
CoordinateReferenceSystem crs = GML3EncodingUtils.getCRS(geometry);
if (crs != null) {
return GML3EncodingUtils.toURI(crs);
}
}
if ("srsDimension".equals(name.getLocalPart())) {
CoordinateReferenceSystem crs = GML3EncodingUtils.getCRS(geometry);
if (crs != null) {
return crs.getCoordinateSystem().getDimension();
}
}
As you can see, it grabs the CRS from the geometry to encode both srsDimension
and srsName. Since srsDimension is encoded, the CRS object must be set (unless
the srsDimension is set from app-schema mapping file?).
You can start by looking at GML3EncodingUtils.toURI(), which traces down to
GML2EncodingUtils.epsgCode() where it could return null.
Cheers
Rini
From: siss-boun...@lists.csiro.au<mailto:siss-boun...@lists.csiro.au>
[mailto:siss-boun...@lists.csiro.au]<mailto:[mailto:siss-boun...@lists.csiro.au]>
On Behalf Of Brett Walker
Sent: Friday, 1 June 2012 3:56 PM
To:
geotools-devel@lists.sourceforge.net<mailto:geotools-devel@lists.sourceforge.net>;
s...@lists.csiro.au<mailto:s...@lists.csiro.au>
Cc: Geoff Williams
Subject: [Siss] Missing srsName from geometry
Hi All,
I think that I have found a bug, perhaps in App-Schema, perhaps in the Postgres
DataStore, relating to the srsName attribute for GML Geometries.
I have a colleague who has generated a fragment of xml as follows:
<gml:Point srsDimension="2"
srsName="http://www.opengis.net/gml/srs/epsg.xml#4326";>
<gml:pos>148.9667 35.25</gml:pos>
</gml:Point>
My colleague is using Postgres 8.4 32-bit and PostGIS 1.5.3 32-bit on RHEL 5x
I am using the same App-Schema to build a complex WFS in Geoserver. I am using
Postgres v9.1.3 64-bit and PostGIS v2.0.0 64-bit on a Windows 7 64-bit system.
The fragment of xml I generate is:
<gml:Point srsDimension="2">
<gml:pos>148.9667 35.25</gml:pos>
</gml:Point>
I am seeing that the manner in which PostGIS deals with geometry metadata has
changed in my version of PostGIS. I have a feeling that this may be a bug
relating to how GeoTools interacts with PostGIS 2.0.0. I don't know where in
the code to confirm my suspicions. Any ideas to start looking?
Brett
Brett Walker <brett.wal...@geometryit.com<mailto:brett.wal...@geometryit.com>>
Software Developer / Analyst
Geometry Pty Ltd
Telephone 03 6223 1999
Mobile 0458 498 386
Fax 03 6223 1988
Web www.geometryit.com<http://www.geometryit.com/>
Address 31 Salamanca Square, Battery Point, TAS 7004,
Australia
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