> -----Original Message----- > From: Danny Angus [mailto:[EMAIL PROTECTED] > Sent: 21 October 2003 10:43 > To: 'James Developers List' > Subject: RE: MailetException vs MessagingException > > > > > > > > Jason > > > In my way of thinking a MailetException ("there was a > problem")would > > be > > (mostly) classed as transient, whereas a MessagingException ("this > > message cannot be processed/delivered due a problem in it") would be > > permanent > > Just my 2p worth... > > Ha! I had it exactly the other way round, either way though I > don't feel that there's a good enough mapping of > transient/permanent onto the two exception types, which might > lead to a lot of messy conditional re-throwing. <grin> No. Having thought about it I think you're right. The only way to this might be to do have 3 types of exception then: TransientMailetException and PermanentMailetException, but you still might end up rethrowing exceptions all over the place. I think that MessagingException might become PermanentMessagingException instead, but I'm not sure how much value is being added here. You would also need to add attributes to give more meaningful error messages (either to the user or in the log). For example: -99 (database connection failed, will retry) -101 (please wait, resource locked/busy)
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