Alex Trofast ha scritto:
> Greetings,
>
> While working on the Ingres JDBC driver a couple of things I've been
> wondering about:
> The FilterToSql class encodes the WHERE clause of SQL if I'm correct, is
> this the class that gets used for FilterFactory filters? For example the
> sort method of FilterFactory, if it's not working properly is there a
> method I should overwrite in any of my classes?
FilterFactory just builds filters, OGC filters in particular.
What do you mean "if the FilterFactory method is not working properly"?
Do you have a test showing a misbehavior? If it's not working we fix it,
we don't work around it.
What has it to do with the FilterToSql?
> Next, one test fails because the Geometry.getUserData() returns null and
> not a CoordinateReferenceSystem even though I have implemented createCRS
> and getGeometrySRID and these two are functioning properly. Is there a
> reason why a Geometry would "forget" about it's CRS? The only issue I've
> been able to track down is something like this:
> FINER: GEOMETRYCOLLECTION (POINT (1 1)) is not of type
> com.vividsolutions.jts.geom.GeometryCollection, attempting conversion
Conversion might certainly make the geometries loose their userdata,
not sure that case has ever been covered.
Searching for the non parametric part of that error message I've found
this code in JDBCFeatureReader at line 629:
// they value may need conversion. We let converters chew the initial
// value towards the target type, if the result is not the same as the
// original, then a conversion happened and we may want to report it to the
// user (being the feature type reverse engineered, it's unlikely a true
// conversion will be needed)
if(value != null) {
Class binding = type.getType().getBinding();
Object converted = Converters.convert(value, binding);
if(converted != null && converted != value) {
value = converted;
if (dataStore.getLogger().isLoggable(Level.FINER)) {
String msg = value + " is not of type " + binding.getName()
+ ", attempting conversion";
dataStore.getLogger().finer(msg);
}
}
}
The message is quite odd though... how is it possible that
GEOMETRYCOLLECTION(POINT(1 1)) is not a jts geometry collection?
The conversion is likely being performed by GometryTypeConverterFactory,
but the fact remains there is something quite odd going on... how
are you building the geometries in your dialect code?
Cheers
Andrea
--
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.
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