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Subject: RE: Recursive Pipeline
Date: Tue, 16 Mar 2004 16:57:02 +1300
Message-ID: <5744FAECB4B8864F83CB05F2E1D16EEBBAA344@coso.staff.vuw.ac.nz>
Thread-Topic: Recursive Pipeline
Thread-Index: AcQGuWwAj0XlXqI1Rdmedh/Z9UQI9AET5G6QAAAqkYA=
From: "Conal Tuohy" <Conal.Tuohy@vuw.ac.nz>
To: <users@cocoon.apache.org>

Ack! Fingers slipped! Here's what I meant to write:

> I did something like this once, to aggregate a list of html=20
> pages together. Each page had a [next] link at the bottom,=20
> and my pipeline basically followed these links. I think you=20
> want something similar. I don't have the code still, but from=20
> memory, something like this:
>=20

<map:match pattern=3D"page/*">
	<map:generate type=3D"html" src=3D"http://www.foo.com/?page=3D"{1}"/>
	<map:transform src=3D"check-if-found-or-keep-looking.xsl">
		<map:parameter name=3D"current-page" value=3D"{1}"/>
	</map:transform>
	<map:transform type=3D"xinclude"/>
	<map:serialize type=3D"xml"/>
</map:match>

Call the pipeline first with "page/1".=20

The XSL check-if-found-or-keep-looking.xsl should check if the record is =
in the page: if so it should return the contents of the page (i.e. an =
identity transform). If not found, it should return only an xinclude =
statement. So the entire output document would be just the single =
element:

<xi:include=20
	xmlns:xi=3D"I-don't-remember-the-xinclude-namespace-uri :-)"=20
	href=3D"cocoon:/page/{$current-page+1}"/>

Then the xinclude transformer handles the rest. If the record was found =
then the xinclude transformer does nothing, and the page is serialized. =
If the record was not found then the xinclude transformer will make the =
recursive sitemap call.

Cheers

Con

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