P.S. Sorry, accidentally sent this to uDig list first...

Hi all,

today I decided I should upgrade GISWidgets to use the latest GeoTools version, 
namely 2.5 RC1 (it used 2.3 before). Most changes seem cosmetical and can be 
solved easily, but I run into a problem where I am missing functionality in 
2.5. that existed (intended or not) in 2.3.x:

How to query all available units (length, angle) from an authority factory. In 
particular I want all units supported by EPSG.
I have never been able to retrieve linear and angular units separately, but 
with GeoTools 2.3 the following worked:
    CSAuthorityFactory csFactory = ...
    Set<String> codes = csFactory.getAuthorityCodes(Unit.class);
Now this method requires the interface "IdentifiedObject", which is not 
supported by the Unit class.

I had a look at the user guide, but all I found was related to 
"IdentifiedObject"s.

Also the CRS utility class has a method "getSupportedCodes", but this will all 
sorts of objects, but no units either. (I am using the HSQL plugin. Doesn't 
this plugin contain units?)
-- 
Matthias Basler
[EMAIL PROTECTED]


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