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From sebb <seb...@gmail.com>
Subject Re: Possible incubation?
Date Wed, 08 Apr 2009 12:49:09 GMT
On 08/04/2009, Andre Dantas Rocha <andre.dantas.rocha@uol.com.br> wrote:
> Jorg,
>
>  I don't agree with this point at all: "having a method call in a catch block
>
> is
>  likely to cause problems for code analysis tools - as well as humans -
>  as one cannot immediately tell if the code continues or not"
>
>
> I believe it is possible to know if the code continues or not, for example,
>  if you rethrow the exception at the end of handle() method. Reading your
>  message, however, I realized that it is a good idea to make handle() method
>  works more safely allowing it to throw original exception in case of error
>  inside it.

So does the following code continue or not?

try {
   doSomethingRisky();
catch(Exception e){
   handleException(e);
}

And how can you be sure?

>  Andre
>
>  -----Mensagem original-----
>  De: sebb [mailto:sebbaz@gmail.com]
>  Enviada em: quarta-feira, 8 de abril de 2009 07:21
>
> Para: Commons Developers List
>  Assunto: Re: Possible incubation?
>
>
> On 08/04/2009, Jörg Schaible <joerg.schaible@gmx.de> wrote:
>  > Hi Andre,
>  >
>  >  Andre Dantas Rocha wrote at Dienstag, 7. April 2009 14:38:
>  >
>  >
>  >  > Hi all,
>  >  >
>  >  > This message was originally sent to incubator list, but they suggest to
>  >  > post it here because *maybe* the idea can fit in Commons project.
>  >  >
>  >  > I'm developing a framework called Jeha. The main idea is to provide
>  easy
>  >  > exception description and handling using annotations in methods and
>  >  > classes
>  >  > and some commons handlers. I believe that the  idea is simple, but
>  >  > powerful.
>  >  >
>  >  > The initial code and start guide of framework are here:
>  >  >
>  >
>  <http://sourceforge.net/project/showfiles.php?group_id=242203&package_id=294
>  >  > 931&release_id=650572>
>  >  >
>  >
>  http://sourceforge.net/project/showfiles.php?group_id=242203&package_id=2949
>  >  > 31&release_id=650572
>  >  >
>  >  > I'd like to hear from community if this idea is valuable for a possible
>  >  > incubation.
>  >  >
>  >  > Please let me know your opinion.
>  >
>  >
>  > It might be only me, but I see this approach a bit critical. On one hand
>  >  you're right, writing exception code is quite tedious sometimes, but with
>  >  your solution you wipe out any useful method signature regarding
>  exception
>  >  declaration. What happens if I don't wanna handle certain exception types
>  >  or RuntimeException instances? I cannot simply rethrow from the handler.
>
>  I wondered about that. Also, having a method call in a catch block is
>  likely to cause problems for code analysis tools - as well as humans -
>  as one cannot immediately tell if the code continues or not.
>
>  Now, having a way to perform the same code for multiple exceptions
>  would sometimes be useful. Dunno whether that could be implemented.
>
>  >  - Jörg
>  >
>  >
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