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From Sylvain Wallez <sylvain.wal...@anyware-tech.com>
Subject Re: Defining Source Interfaces
Date Wed, 08 Jan 2003 14:31:27 GMT
Nicola Ken Barozzi wrote:

>
> Carsten Ziegeler wrote:
>
>> Sylvain Wallez wrote:
>>
> [...]
>
>>> You're totally on track. If you need this action right now, I would 
>>> suggest to mimic what's in the DirectoryGenerator, that makes the 
>>> assumption that the Source is a file. You can then use all the 
>>> facilities given by File.
>>>
>>
>> And we only argue, if this support should belong to the Source interface
>> or too an optional extension interface where I always have to do an 
>> instanceof to see if the source has childs or not.
>>
>> :)
>
>
> It's nice when discussions are about where to put something new, it's 
> always goodness :-)


Welcome to the party, Nicola Ken !

> MHO: It all depends on what a Source is.
>
> 1 - If a source is a plug to a URI-based source handler, it should 
> have children. 

?? Have you seen children access methods on java.net.URL ??

> 2  - If it's a plug to a resource, it should not.

What is a "resource" ?

> Usually a source is (2), but since we bind the Source to a URI, (1) 
> makes more sense. BTW, if (2) is true, specific Sources should 
> probably not be the place anyway where to traverse a URI space, or 
> else we are in case (1).


You lost me ;-)

> Also, a source should IMNSHO do stream2xml conversion. It should pipe 
> directly XML *only* if the source is itself already in xml form, like 
> for example a precompiled SAX stream or a direct plugged in SAX stream 
> (for example in the future bean env).
>
> This makes the whole system more flexible, because we can easily 
> change Generators to make the stream2xml conversion phase pluggale. If 
> we make sources do all the conversion, we are back to Generators, and 
> I don't see the real benfit other than syntatic sugar...


Even Carsten "source-master" got lost here ;-)))

Sylvain

-- 
Sylvain Wallez                                  Anyware Technologies
http://www.apache.org/~sylvain           http://www.anyware-tech.com
{ XML, Java, Cocoon, OpenSource }*{ Training, Consulting, Projects }



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