Andreas Hartmann wrote:
Carsten Ziegeler wrote:
I want to start the implementation of the virtual sitemap components
in the next weeks; but before, we should discuss how they will look like :)
The first point - and imho most important point is, of which components a virtual sitemap component (VSC) can be assembled. My understand is that a VSC is either: - a generator followed by one or more transformers - a set of transformers - a set of transformers followed by a serializer Thus, the VSC acts like a generator, a transformer or a serializer.
Sorry for cross-posting, but this could maybe address a concern Lenya is faced with.
The scenario is as follows:
Lenya provides so-called "CMS screens". This is a simple transformation to create the Lenya look-and-feel forms, error messages etc.
It is done using a meta stylesheet approach triggered by
<map:transform src="cocoon://lenya-screen.xsl"/>
The problem is that we would like to add a i18n step to this transformation, which would be quite difficult (if not impossible) to implement using a meta stylesheet. We don't use a resource because we need to access the transformation from a lot of sitemaps.
My question is: Could VSCs be declared in the sitemap? For instance:
<map:components>
<map:serializier name="lenya-screen" type="virtual"> <map:transform type="xslt" src="cocoon://lenya-screen.xsl"/> <map:transform type="i18n"/> <map:serialize type="xhtml"/> </map:serializer>
</map:components>
Is this a possible scenario for the VSC concept?
Exactly.
I think an important questions is how to pass parameters to a VSC and how to distribute them to the single components.
Passing parameters to a VSC is very similar to passing parameters to resources. There's however a special handling of the @src attribute that exists on generators and transformers, which does not exist on resources.
Example:
Definition (syntax and exact location still has to be defined):
<map:virtual-generator type="foo">
<map:generate src="{src}"/>
<map:act type="lang-select">
<map:transform type="i18n"/>
</map:act>
<map:transform type="xslt" src="stylesheets/{bar}.xsl/>
</map:virtual-generator>Usage: <map:generate type="foo" src="blah"> <map:parameter name="bar" value="baz"/> </map:generate>
Sylvain
-- Sylvain Wallez Anyware Technologies http://www.apache.org/~sylvain http://www.anyware-tech.com { XML, Java, Cocoon, OpenSource }*{ Training, Consulting, Projects }
