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From Geoff Howard <>
Subject Re: xml select own stylesheet?
Date Sun, 11 Jan 2004 19:40:03 GMT
Conal Tuohy wrote:

> Mark, for one technique, see my message from about 12 hours ago ("sitemap
> logic depending on pipeline content").

Aside from the technique in Conal's message, this is generally not 
possible.  The technical reason is that a pipeline is assembled before 
processing starts.  Only certain pipeline elements can influence 
construction of a pipeline (matchers, selectors, actions, and flow). 
This is an intentional design decision to help enforce separation of the 
model (content) from "controller" and presentation (selection of 
stylesheet being one aspect of those).  Another aspect to this is 
caching which would be impossible (or useless) if processing had to 
start in order to figure out if a cached response had already been 

You can "peek" into the intended source file with an action or flow, or 
even possibly one of the xml-based input sources to accomplish the same 
sort of thing.  If you have the flexibility to restructure your data, 
you can also consider finding some other way to store and signal that 


>>-----Original Message-----
>>From: Mark Lundquist []
>>Sent: Sunday, 11 January 2004 18:37
>>Subject: xml select own stylesheet?
>>Dear People Who Know More About Cocoon Than I Do,
>>I would like to determine which stylesheet to call for (i.e., the src
>>in a <map:transform>) based on the value of an element in the XML
>>source data itself.  That would mean the pipeline has to be
>>able to see
>>into the stream it's processing, right?  Maybe that's totally normal
>>and I just don't know how to do it...
>>So, is there a way to query the source XML from within the sitemap?
>>Thanks for putting up with me noob questions :-)

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