Re: Best way to pass parameter to custom TemplateLoader?

I believe that Jetty still uses a single execution thread, but I could be wrong. The NIO module handles the incoming server socket connections and reads/writes in a single thread. That's the standard NIO model. Your only option might be a thread local. I haven't looked at the APIs, but I have had to do this with a number of frameworks because of the same issue you are having.

-bp


On Jul 11, 2011, at 11:04 AM, Chris wrote:

> I'm trying to implement a custom TemplateLoader for freemarker. This 
> loader needs to examine the HttpServletRequest to know where to get the 
> template source.
> 
> Unfortunately, Configuration.getTemplate() does not provide a way to 
> pass arbitrary parameters to the TemplateLoader.
> 
> One possible solution is to use some kind of ThreadLocal scheme. I'm 
> concerned that this may not work because in Jetty, our app server, 
> there's some fancy nio module that handles multiple connections per 
> thread, and I don't entirely understand how it works. Plus I'm 
> suspicious of anything that could lead to hard-to-debug threading issues.
> 
> Another way would be to create an Environment variable and add a custom 
> attribute to it, but unfortunately it appears that an Enviroment can 
> only get created after the template has been created.
> 
> I'm stuck.
> 
> 
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------------------------------------------------------------------------------
All of the data generated in your IT infrastructure is seriously valuable.
Why? It contains a definitive record of application performance, security 
threats, fraudulent activity, and more. Splunk takes this data and makes 
sense of it. IT sense. And common sense.
http://p.sf.net/sfu/splunk-d2d-c2