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From "Luca Morandini" <l.mo...@tin.it>
Subject RE: Understanding cocoon ......
Date Wed, 09 Jan 2002 21:15:57 GMT
Christoph,

Just my 1.2c (after tax)...

> a. Is it possible to "compose" pipelines and having the composed
> pipeline beeing processing bottom-up and the whole beeing rendered for
> example as html: A compostion of tables within table, frames within
> frame etc.,  where the content of the "elementary" pipelines are
> dyanmic, taking for examples data from the databases. I am aware that
> the aggregation <map:aggregate> mechansim provides a somewhat similiar
> construction, only the composition could also be composed of aggregations.

Well, not exaclty what you're asking for, but... you can, for instance, feed
data produced by Cocoon inside an XSL using the "cocoon:" prefix, like in:

<xsl:copy-of select="document('cocoon:/b.xml')"/>

Where b.xml can be the output of a pipeline (including aggregation).

> b. Is it possible the change the sitemap or more specifically the
> piplines configuration ( <map:pipelines>)  dynamically.

No, unless you rewrite (outside Cocoon) the sitemap.xmap and recompile it
every time... daunting indeed.

Best regards,

---------------------------------------------
               Luca Morandini
               GIS Consultant
              lmorandini@ieee.org
http://utenti.tripod.it/lmorandini/index.html
---------------------------------------------


> -----Original Message-----
> From: Christoph Henrici [mailto:chenrici@dplanet.ch]
> Sent: Wednesday, January 09, 2002 9:41 PM
> To: cocoon-users@xml.apache.org; cocoon-dev@xml.apache.org
> Subject: Understanding cocoon ......
>
>
>   I have been studying, testing and playing around with cocoon in the
> last few days as a newcomer : i am greatly impressed with what ease with
> cocoon "pipelines" arbrary data sources can be "chained" to a result
> target: a very powerful paradigm (pipe) applied in a powerful context
> (http) by using great technology (xml, xlst). In context of the
> development of a web based application with requirements for a fairly
> generic mechanism for the dynamic personlization of webpages in terms of
> content and style the following questions below arised.  Maybe they stem
> from the fact, that i still missed a couple of aspect and points, maybe
> the requirement or idea is just not thought through enough, anyway:
>
> a. Is it possible to "compose" pipelines and having the composed
> pipeline beeing processing bottom-up and the whole beeing rendered for
> example as html: A compostion of tables within table, frames within
> frame etc.,  where the content of the "elementary" pipelines are
> dyanmic, taking for examples data from the databases. I am aware that
> the aggregation <map:aggregate> mechansim provides a somewhat similiar
> construction, only the composition could also be composed of aggregations.
> b. Is it possible the change the sitemap or more specifically the
> piplines configuration ( <map:pipelines>)  dynamically.
>
> If this can be achieved with cocoon 2 i would be very grateful for a
> rough outline on how. If some additional development would be needed it
> would be great to have some starting hints at where to start looking at.
> Any other ideas or suggestions with regard to the requirement are also
> greatly appreciated.
>
> Christoph Henrici
>
>
>
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