Paragraph renderer should be able to interact with JEE request and response
objects
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Key: MAGNOLIA-1977
URL: http://jira.magnolia.info/browse/MAGNOLIA-1977
Project: Magnolia
Issue Type: Improvement
Components: templating
Affects Versions: 3.5.2
Environment: Windows 2003 SP2, Tomcat 6.0.14, JDK 1.5.11
Reporter: Keith Childers
Assigned To: Philipp Bracher
Attachments: info.magnolia.zip
In attempting to integrate custom applications developed in ColdFusion and PHP
into our magnolia 3.5 setup, we created paragraph templates of a custom "cfm"
and "php", each written in its respective scripting language. These templates
and their dialogs wrapped the ability to embed an application of the same type
as a paragraph within the magnolia-rendered layout. This is nice because it
allows us to place multple applications written in different languages in the
same page. It is also nice that any code error encountered in a paragraph
template doesn't halt execution of the rest of the page, and in fact displays
the stack trace of that error as content for troubleshooting purposes and
allows us to try-catch errors within the application rather than having to deal
with exception handling at the page level.
However, a problem arises when your applications need to be able to access the
request object from the main JEE page request and write things into that object
for processing later on in the request, or to be able to write to the response
object for header insertion, for instance if the application were going to
stream bits with a custom mime header to serve a file from binary storage, or
to insert a redirection header.
Currently, it seems that the pluggable templating mechanism doesn't allow the
paragraph templates to have write access to the request or response at the page
level. I also haven't figured out how to get read access to the page request
object from a paragraph without explicitly passing a reference to it into the
include.
One of our developers customized several classes in the info.magnolia.context
package to be able to override this behavior at a paragraph instance level by
setting a custom property (isApplication) on the paragraph node in the JCR. He
also changed JSPParagraphRenderer class in the templating module to work with
these customizations. It seems the work he did no longer works in 3.5 and we'd
love to see the functionality he developed added as some sort of optional
switch (whether at a root config or node property level, doesn't matter) in the
core application.
I have attached source for the changes he made.
Thanks for your consideration!
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