[1.4] Centralized handling of "view revision"

[Andreas Hartmann <an...@apache.org>]

Hi Lenya devs,

up to now, it was necessary to add a "view revision" pipeline
to each resource type sitemap. The lenya-document URI syntax
makes it simple to get rid of this code duplication.

Since the lenya-document URI requires a parameter of the form

  lenya-document:<uuid>,rev=...

it would be necessary to add a selector to the sitemap. To avoid
this, you can use the LinkingModule which checks for the
lenya.revision request parameter and creates the key-value pair
accordingly:

  lenya-document:<uuid>{link:rev}


Now you can remove the "view revision" pipeline from your resource
type sitemaps and use the following source URI for the generator in
your main resource type pipeline:

  <map:generate
src="lenya-document:{page-envelope:document-uuid},lang={page-envelope:document-language}{link:rev}"/>


If you don't like the syntax, please reply to this thread.


-- Andreas


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