WebWork + SiteMesh using FreeMarker - available variables in decorators

OK... I did some experiments this weekend and here are my findings:

1) A SimpleHash is created in com.opensymphony.module.sitemesh.freemarker.FreemarkerDecoratorServlet and that is what's available in the decorator.

2) Given conclusion # 1, I have no idea why ${Request.requestURL} works, since it is not put into the SimpleHash object. Also, requestURL is the only call that works here. Matt, are you sure other request calls (such as ${Request.locale}) work for you?

3) So, the solution to my problem could be to include a reference to the request object, by simply adding to line 78 of FreemarkerDecoratorServlet: hash.put("req", request);. Is this something the developers find useful? Could I open a JIRA issue for it?

4) Adding the line above to FreemarkerDecoratorServlet, the following references work: ${req}, ${req.setAttribute('foo', 'bar')}, ${req.getAttribute('foo')}, ${req.removeAttribute('foo')}, ${req.contextPath}, ${req.requestURI}, ${req.requestURL}, ${req.session}. I'm using Tomcat 5.5.

5) ${req.parameterNames}, ${req.parameterMap} also work, returning EnumerationModel and SimpleHash respectively. ${req.getParameter('foo')} works if 'foo' is defined as a parameter (ex.: ?foo=bar in the QueryString).

6) The following didn't work, although there have corresponding methods in the request class: ${req.pathInfo}, ${req.queryString}, 
${req.isRequestedSessionIdValid()}, ${req.info}, ${req.parameterValues}.


So, I'll probably extend FreemarkerDecoratorServlet here and make it work as above. If you find useful to add this solution to SiteMesh, let me know and I'll open a JIRA issue.

Thanks a lot to everyone that replied and helped.

Vítor Souza

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