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From Jakob Praher <jpra...@yahoo.de>
Subject Re: XMLForms prepare/perform nothrow
Date Thu, 13 Feb 2003 19:31:49 GMT
Am Don, 2003-02-13 um 19.17 schrieb Jeroen Cranendonk:
> > Am Don, 2003-02-13 um 17.20 schrieb Jeroen Cranendonk:
> > > Our company is currently building a project around cocoon(yay:) and
> xmlforms.
> > > We are using the current development cvs version.
> > > Working on this it occured to me that the prepare and perform methods of
> > > the AbstractXMLFormAction class don't allow the throwing of any
> exceptions
> > > whatsoever.
> > > My question is if this is by design or by error, and how I should handle
> any
> > > errors occuring in my implementations of prepare and perform.
> > > (And if this is by error and not design, if anyone feels like fixin it
> soon
> > > ^.^ )
> >
> > you mean the perform( ) method does not declare a checked exception?
> I mean AbstractXMLFormAction.java says :
> perform();
> and not
> perform() throws someExceptions;

jup.

> > first:
> > you can use the following trick to throw always an exception
> >
> > try {
> >
> > } catch ( Throwable t ) {
> > throw new RuntimeException( t ) ;
> > }
> >
> > this works, since RuntimeException and subclasses don't need to occur in
> > the signature.
> Sounds good, I'll try that :)
> will this still be cought more upwards by cocoon tho, so it can generate a
> cocoon
> error page ? (using <map:handle-errors>, that's what I want really )
> 
sure ase RuntimeException extends Exception, so if you do 

catch ( Exception e ) {
	
}

you also get RuntimeExceptions like NullPointerException and things like
that ...

-- Jakob


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