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From Bruce Robertson <brobe...@mta.ca>
Subject Re: A Gzipped XML Serializer component for Cocoon
Date Mon, 24 Mar 2003 14:26:28 GMT
Quoting Joerg Heinicke <joerg.heinicke@gmx.de>:

> There were some threads about on the developers list. IIRC they came to the
> 
> conclusion to add such things to the pipeline. But after 2.1 release. One 
> point in the discussion was, whether this is the task of Cocoon and not of 
> Tomcat or Apache (mod_gzip).
> 
> Joerg
> 
> Michael Riedel wrote:
> > Hi Bruce!
> > 
> > 
> >>I'm pretty sure this is something that eventually should be rolled into
> >>Cocoon itself, but as I note in the page, my code is a hack on the
> >>XMLSerializer, and shouldn't be ci'd as-is.
> > 
> > 
> > Though I don't need it at this time, I agree, that gzip compression is a
> > quite usefull. It should be included in the cocoon distribution.
> > 
> > But I'm not sure, if compression should be handled by a serializer. What,
> if
> > someone wants to compress something else than XML data. Then he'd have to
> > rewrite another serializer to support gzip...

Michael, Joerg:

On the issue of if this being handled by mod_gzip or mod_deflate, Apache's own
Batik Squiggle does not, in my experience, receive compressed SVG if compression
is handled this way. Nor do I see why it should send a "Accept-Encoding: gzip"
header to get *.svgz, since they are not a compressed form of the original (like
html that has been gzipped by the above), but rather a proper manifestation of
the document, like jpg compression. Secondly, there is the issue of sparing your
cache. See the introduction to my
http://wiki.cocoondev.org/Wiki.jsp?page=Gzip_XML_Serializer
(I would post this to the dev group, but I never seem to be able to get
subscribed to that.)

I can see Michael's argument for a reader-based implementation, but efficient
caching is a sine qua non for me. Could something be done with a view?

I'm glad to hear this is on the radar of the developers', for whose hard work I
am most grateful.

Yrs,
-- 
Bruce Robertson, 
Dept. of Classics, Mount Allison University
http://heml.mta.ca

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