> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On Behalf Of 
> Edelson, Justin
> Sent: 01 November 2006 20:25
> To: dom4j-dev@lists.sourceforge.net
> Subject: Re: [dom4j-dev] Bringing dom4j up-to-date
> 
> <notaflame>
> >I would like to use events when operations occur on a node (I have a 
> >product that provides workflow based on retrofitting this 
> facility into 
> >DOM4J)
> 
> Isn't this just an alternate DocumentFactory implementation? 
> Or is there something in the current object model preventing 
> you from doing this effectively?

This is an alternate DocumentFactory the uses much of the underlying
infrastructure in Dom4j, but providees transactional services and event
notification, and a rule model, however as the underlying implementation
does not provide much event support, the implementation is overly sensitive
to the implementation. If the implementation provided better event support
the two issue could be managed cleanly, without depending on the quirks of
the implementation
 
> 
> > I would like the DocumentFactory to be an interface
> 
> I seem to remember there being some good reason this couldn't 
> happen originally, but even if this isn't the case, I'd posit 
> you can't do this now because it'll break backwards compatibility.
> </notaflame>

I fully agree that this is incompatable, however 
- there are ways to preserve the compatability by introducing, for example a
parent interface
- any changes to any interface will provide compatability issues, some
affecting users, and some affecting implementation




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