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From Reinhard Poetz <reinh...@apache.org>
Subject Re: Layered software designs
Date Fri, 28 Mar 2008 09:45:26 GMT
Rainer Pruy wrote:
> 
> Reinhard Poetz schrieb:
>> Dev at weitling wrote:
>>> But (maybe I have missed some mails) how do you want to make this 
>>> Pipeline API? E.g. a SAX-based pipeline is something different than image
>>> data running through several filters. How do you want to prevent the use
>>> of a SAX-events generating component together with an image data 
>>> transformer? What about something like it's used in clipboards: each 
>>> component offers a list of importable and exportable formats?
>> See http://marc.info/?l=xml-cocoon-dev&m=120611990603725&w=2 Do the
>> explanations that this mail answer your question?
>> 
> 
> They answer a number of questions.
> 
> Nevertheless, the question of connection "type" is still open.
> 
> Ok, the answer given is "it is up to the components to ensure compatibility".
> 
> 
> However, what does this mean practically? Will there be different
> "Interfaces" for different type of data to e processed. (SAX events will use
> SAX interfaces, image data will use others)

yes, that's the idea (and IIRC it is already implemented this way Corona).

-- 
Reinhard Pötz                            Managing Director, {Indoqa} GmbH
                           http://www.indoqa.com/en/people/reinhard.poetz/

Member of the Apache Software Foundation
Apache Cocoon Committer, PMC member, PMC Chair        reinhard@apache.org
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