Jason (and whomever else takes an interest), The "generator" stuff just added to commons-functor includes a form of nested/tunneling exception called GeneratorException. This exception, it seems, is intended to wrap a (checked) Exception, as thrown by specific Generator instances, in a RuntimeException.
As currently implemented, this adds a dependency on JDK 1.4, since it uses the RuntimeException(Throwable) constructor. Otherwise, commons-functor is backward compatiable to JDK 1.2 (or even JDK1.1 with collections). Two comments on this: 1) I'd like to maintain backward compatiablity with earlier JDKs, if at all possible. A version of GeneratorException that overloads the Throwable.getCause method to return a locally defined reference to the throwable, and doesn't use the super(Throwable) constructor might be one way to achieve this in a backwards and forwards compatiable fashion without comprimising the current functionality. 2) GeneratorException begs the question of some sort of generalized FunctorException and/or a small collection of specific exception types (PredicateException, ProcedureException, etc.) Alternatively, the NestedException type in lang could be used for this purpose. Personally, I'd prefer a specific TunneledException type that is used (and only used) to adapt Exception to RuntimeException, as I've described at <http://radio.weblogs.com/0122027/stories/2003/04/01/JavasCheckedExceptionsWereAMistake.html> and elsewhere. Thoughts? Comments? - Rod <http://radio.weblogs.com/0122027/> --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
