Hello Jody
I forgot to say that I do get a "SRID could not be determined" warning
message when creating a schema.
Tracking things down a little, I saw that the method
PostgisDataStore.createSchema does attempt to setup a valid SRID.. but
it fails!
If anyone is familiar with this class, it would be nice to take a look
at lines of code 1287-1298 at PostgisDataStore.java (this is 2.5-M3):
try {
Set ident = refSys.getIdentifiers();
if ((ident == null || ident.isEmpty()) && refSys ==
DefaultGeographicCRS.WGS84) {
SRID = 4326;
} else {
String code = ((NamedIdentifier) ident.toArray()[0]).getCode();
SRID = Integer.parseInt(code);
}
} catch (Exception e) {
LOGGER.warning("SRID could not be determined");
SRID = -1;
}
It ends up that getIdentifiers() returns an empty set, but the
comparison with DefaultGeographicCRS.WGS84 fails (as I guess it should
since this isn't the default WGS84 but rather one read from the
shapefile's .prj file)
I should say that this is also happening for other CRSs besides WGS84
(i.e., other shapefiles with distinct .prj files)
I guess this points to the main issue here: for me, the SRID code should
be looked up with CRS.lookupEpsgCode. Shouldn't it be used in this case?
I tested it and it retrieved the correct code for the shapefile's CRS
(using fullScan=true). However, I didn't change PostgisDataStore to test
if that is enough to make everything work, but I can't see why not.
Cheers,
Milton
Jody Garnett wrote:
> GeoTools is supposed to look up the definitions in your spatial_ref_sys
> table; and use them. I believe Andrea was having similar questions about
> creating Geometry to update a postgis table...
>
> When you copy your geometry over can you try calling setSRID( 4326 ) on
> each geometry - and see if that makes a difference? It would be nice if
> the DataStore did this work for you - but I doubt it is that smart.
>
> Jody
>
--
Milton Jonathan
Grupo GIS e Meio Ambiente
Tecgraf/PUC-Rio
Tel: +55-21-3527-2502
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