Hmmm... good question. Is there any standard wicket way for i18n'ing 
exception messages? Also what does Geotools do. It uses resources 
bundles for exception messages like wicket does, perhaps the two might 
be compatible?

Andrea Aime wrote:
> Hi,
> I'm working on some code that should auto configure a
> feature type or a coverage. The code can fail for a number
> or reasons, and should be usable for both REST and the
> web UI.
> 
> The thing is, for REST an exception in english probably
> does the trick, but for the web UI we want to report
> the user why the auto-configuration failed, which means
> simply thorwing an exception does not cut it... or else,
> it might, but we'd need to be able and get an i18n key
> as well as its eventual parameters (complex messages might
> need MessageFormat like parametrization).
> 
> On the same line we might want to report back warnings,
> stuff like "I could not figure out what the heck this
> CRS is, so I kept it and forced an on the fly reprojection
> to 4326 for data publishing".
> 
> Now for the warnings the thing could be that the auto
> configure method does not return a simple result, but
> returns an "auto configuration processor" that allows
> you to call auto-configure and get back the resource,
> and then call for warnings.
> 
> I could do the same for exceptions in this case, return
> null from the main path and have a method that returns
> the error messages.
> 
> But... I'm more interested in seeing if we can come
> up with a general solution, since this problem
> might come up in other situations as well.
> Is it a good idea to add the exceptions a getKey()
> and getParam() -> Object[] methods. Should we come
> up with something able to turn an exception into
> a localized message instead (pluggable tranformer)?
> 
> Or do you feel I'm just overdoing this, and we should
> just report back the user it's not his lucky day
> without details on the why?
> 
> Cheers
> Andrea
> 
> 
> 
> 
>       
> 
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-- 
Justin Deoliveira
The Open Planning Project
[EMAIL PROTECTED]

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