Re: [Webwork-devel] ResultException in prepare()

[<Jim...@do...>]

I would like it in prepare because we often instantiate an object in=20
prepare. Then, the subsequent setXXX methods can have an object to go=20
against, as opposed to storing the setXXX values in intermediate dummy=20
strings and such.

Now, if there is an error instantiating this object in prepare(), such as=20
a finder exception, I would like to addError() and get the heck out with a =

ResultException(INPUT). Without this, I have to wait until doExecute() to=20
bail, which means I have to wrap all of my setters with a "if (object !=3D =

null)" methods.

It seems much cleaner to extend the try block to include the getAction()=20
call.

As to extending RuntimeException, I ran into a situation where I was=20
extending ResultException, and it was more convenient for me to have it as =

a RuntimeException. I didn't see any design issues, especially since you=20
are expecting it to be only called in execute(). I can think of situations =

when I would prefer it to be called in prepare(). (Full circle, no?) ;-)

-jim





Rickard <ri...@mi...>
01/22/2002 06:40 PM

=20
        To:     Jim...@do...
        cc:     web...@li...
        Subject:        Re: [Webwork-devel] ResultException in prepare()


Jim...@do... wrote:

> It would be handy to be able to throw a ResultException from prepare(),=20
> especially in our Update actions. Any hope of extending the try block in =


> ServletDispatcher around the ActionFactory.getAction(actionName) method?


Well, no, not really. ResultException is just a fancier way of selecting=20
the return value from execute(), and prepare() is not done as a part of=20
that process, but rather as a part of the instantiation.

Why do you want it?


> Also, I would suggest that ResultException extend RuntimeException.=20

Well.. it doesn't make much difference for execute() since it throws=20
Exception.

/Rickard

--=20
Rickard =D6berg
Author of "Mastering RMI"
Chief Architect, TheServerSide.com
   The Middleware Company - We Build Experts!