Jody Garnett a écrit :
> CRSAuthorityFactory is not actually a factory - it is a "builder" that
> makes use of internal definitions to produce the object defined by the
> code you defined. The code is usually of the form "EPSG:4326" or some
> other number - "NAD27/UTM zone 11N" is a name.
As a side note, while it is true that searching from a name like ""NAD27/UTM
zone 11N" is not the usual way to use the authority factory, in the particular
case of EPSG factory backed by the SQL database, it work.
If my memory serve me right, the EPSGCRSAuthorityFactory that Lareina is using
is the legacy factory backed by the WKT property file. Because it contains only
a subset of authority codes, it may not contains the CRS that Lareina is
looking
for (but it should throws an exception in such case, not return null...) I
would
suggest to try an other factory.
Instead of creating the factory directly, it would be safer to use:
CRSAuthorityFactory factory =
ReferencingAuthorityFactory.createCRSAuthorityFactory(null);
Such approach will protect you from class name changes between Geotools 2.4 and
2.5.
Martin
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