Peter van Hardenberg wrote:
> I'd like to "decorate" my XML files as an early processing
> step with XML from another source. The source documents are
> Shakespearean texts, and I want to use Cocoon to overlay
> annotations from various sources onto the file.
>
> I am considering using map:aggregate, but it seems needlessly
> ugly to have to say something like this in every match:
>
> <map:aggregate>
> <my old source>
> <my annotation file>
> </map:aggregate>
> <map:transform purpose="move the annotation file into the
> source and unwrap the new root node"/> ...
>
> Does anyone have any advice about a Better Way? I am
> considering using the same approach I currently use to create
> templates. Start with a simple XSLT, XInclude the data for
> that request into it, then use a the cocoon:/ protocol
> transform step to interleave the two. That would let me move
> the whole ugly mess into a single line in each match rule and
> any messiness could be contained in an internal pipeline.
Hi Peter. I've used both of the techniques you've described! You must
work in a digital library too? :-)
The first, as you say, is a bit awkward.
The second technique, if I understand you correctly, is where you
transform your source (Shakespeare) documents to add many "XInclude"
elements pointing at cocoon:/ pipelines? Then you run the XInclude
transformer and make a multitude of other sitemap calls? If so, there's
an obvious downside which is the overhead of all those individual
sitemap calls.
A third technique we've used is to transform the "annotation file" into
an XSLT, and apply that XSLT to the source, e.g.
<map:match pattern="annotation/*.xslt">
<map:generate src="annotations/{1}.xml"/>
<map:transform src="xslt/annotations-to-xslt.xsl"/>
<map:serialize type="xml"/>
</map:match>
<map:match pattern="annotated-source/*.xml">
<map:generate src="source/{1}.xml"/>
<map:transform
src="cocoon:/annotation/my-annotation-file.xslt"/>
...
</map:match>
HTH!
Conal
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