Re: [Bluemusic-devel] Similar bug, but what to do?

[Michael B. <got...@ya...>]

That sounds good. I'm confused, though, as to why you
would want to bubble up a RuntimeException with the
CSDRender class. If the error is being caught and
dealt with at the CSDRender class, why propogate the
error further and "crash" the whole system?

Michael Bechard

--- Steven Yi <ste...@gm...> wrote:

> Hi Michael,
> 
> You raise a good issue.  I prefer that things not be
> silently ignored
> and messages be posted to the user and no CSD is
> outputted.  The
> easiest way I can think of is creating a
> SoundObjectException and
> NoteProcessorException classes that soundObjects can
> raise and bubble
> up to the CSDRender class.  That class can then
> report messages and
> kill the compilation process.
> 
> For the time being, I have largely allowed the
> processors to throw
> exceptions to kill the stack as a primitive
> (lazy...) way to do this. 
> I guess for me it hasn't been a problem to figure
> out what's going on
> as stack traces are easy for me to follow as a Java
> Programmer, but
> for users I'm sure it makes no sense.
> 
> At the end of the chain (CSDREnder I guess), all
> exceptions could be
> wrapped in a  RuntimeException so that calling
> classes wouldn't have
> to explicitly catch the exception and the
> RuntimeException can bubble
> up to kill the stack.
> 
> How's that sound?
> 
> steven
> 
> 
> On Sat, 19 Mar 2005 14:47:50 -0800 (PST), Michael
> Bechard
> <got...@ya...> wrote:
> > I've found a bug similar to the one I just fixed.
> > It's with the EqualsProcessor (and probably other
> > processors as well); if the pfield it's trying to
> do
> > its processing on is not there, it will crash.
> > 
> > Now the question I've got is, do we just have the
> app
> > silently ignore that pfield and have the processor
> > process the rest of the notes, or do we alert the
> user
> > about this problem, or a combination of both; I'd
> > think some kind of alert would be best. But the
> > problem goes a little deeper than that. What if
> > someone were inadvertently trying to apply a
> > PchAddProcessor to a negative pfield? There are
> all
> > sorts of situations that may not make sense to a
> note
> > processor and cause it to crash, so should we add
> that
> > error checking into all of the processors?
> > 
> > I feel silly for running into this problem in the
> > first place, because really I ought to be paying
> more
> > attention to my polyObjects and note processors
> (am I
> > the only user who has encountered this sort of
> > thing?). However, mistakes will happen, and the
> > application should be smart enough to catch them.
> When
> > the application simply won't generate a CSD
> because of
> > these problems, the user has no idea where to
> begin to
> > look for the problem and wastes alot of time
> digging
> > around.
> > 
> > Michael Bechard
> > 
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