[web] Raw "template"
--------------------
Key: LABS-306
URL: https://issues.apache.org/jira/browse/LABS-306
Project: Labs
Issue Type: New Feature
Components: Magma
Affects Versions: Current
Reporter: Simone Gianni
Assignee: Simone Gianni
Fix For: Next
Actually the Dispatch servlet, which serves content in Magma, operates in two
distinct ways :
- If result is a Producer, stream it to output. This is the case for resources.
- If result is an HtmlProducer, pass it to a template, which will take care of
aggregating stuff around it and use an URLRewritingStream for proper URL
rewriting.
This is nice, but limitating. There are situations where :
- We want to serve an html fragment having the advantage of URL rewriting, but
not having a template around.
- We want to use a different template, and force it no matter what
- We want to use a different template and eventually different post processing.
A use case for the first situation is quite simple : an html frameset for
example, there must be URL rewriting but no template around it. Another one,
serving an HTML fragment as the result on an AJAX call, we want the fragment as
it would appear inside the template, but without all the template around.
For the second situation, a good use case is a print template. There are
already a number of methods to set the template, using the Templatable
interface, but the innermost setting takes precedence over the outmost, whle in
this case the opposite should happen.
The third situation is for advanced stuff, like HTML to PDF generation
(perfectly possible with XSLT translating to XSL-FO, or using CSS 3 and a
postprocessor) or again more complex Ajax interactions.
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