[Geotools-gt2-users] GmlDataStoreIssues

[Trevor S. <ts...@ty...>]

I downloaded GeoTools 2.1 M1 and hooked it in to my existing code, but
I can't get GML to do anything helpful.

First, GMLDataStoreFactory uses logic like the following:
if (url.getProtocol() == "file")
This is not guaranteed to provide the desired semantics.  Two equal
strings may have different memory addresses due to deserialization
or string operations.  The recommended practice (from /Effective Java/,
among others) is "file".equals(url.getProtocol()).  This always delivers
the desired semantics, and won't throw a NullPointerException.

Having worked this out, I decided to be more direct with the following
code:
  String url = "/tmp/test.gml";
  DataStore ds = new GMLDataStore(new URL(url));
  featureSource = ds.getFeatureSource(ds.getTypeNames()[0]);
This throws a null pointer exception on any GML I've tried, including
the results of FeatureTransformer and the test data for the old
gmldatasource package.  (I don't have schemas for the latter, but I
supplied the result of FeatureTypeTransformer with no luck).
The null pointer exception is caused by the fact that parsing the
XML does not result in a non-null featureType member of ds.
No SAXException is thrown (I know from stepping through it in the
debugger), nor is any warning indication given.

I don't see any in SVN, but is there some good GML test data?
Does anyone have a code snippet that correctly handles local-file GML?

Thanks,
--
Trevor Stone ~ <ts...@ty...>
Software Developer ~ Tyler Technologies, Eagle Division
Denver Office ~ 1-866-554-4434 / 303-271-9100 ext 208
Curse of the moment: Thou fobbing lean-witted nut-hook!
The 60 Hertz buzz of the florescent lighting no longer drives me insane.
It is more the classes, the deadlines, the assignments, and the people.
-- altamira16