Sylvain Wallez pisze:
> Again I doubt of the real value of a common unified pipeline if all the
> responsibility of ensuring proper compatibility between components
> (including possible data conversion) is delegated to components. This
> leaves a lot of complexity to component implementers (except in the
> simple straightforward push scenario), and the features of the pipeline
> will be limited to linking the components together and caching.

I've been having similar concerns thus I'm eagerly waiting for some non-XML 
examples that would change my mind.

> Furthermore, people will have to take great care of choosing components
> that fit together, or they will get exceptions at pipeline execution
> time. Hmm... reminds me of some criticism about the StAX stream API :-D

LOL! :-)

> So let's agree that we disagree. I'll see what you guys come up with and
> hope I'll change my mind then.

I just wanted to say that I share many points with Sylvain even if it's still 
hard for me to say which option I prefer.

This will require some more thinking...

-- 
Best regards,
Grzegorz Kossakowski

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