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Subject: [core] performance: ELResolvers filtering
From: Martin Koci <martin.kocicak.koci@gmail.com>
To: dev@myfaces.apache.org
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Date: Wed, 16 Mar 2011 11:29:15 +0100
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Hi,


after few months I have time to do some performance optimalization for
myfaces. 

This one is related to topic
http://www.mail-archive.com/dev@myfaces.apache.org/msg49177.html


Problem: 
how to disable ELResolver smartly? Adding a context-param for each is an
overkill.

But we have https://cwiki.apache.org/MYFACES/elresolver-ordering.html in
codebase already. I propose to add new feature "ELResolver filtering"
and new context-param:

<context-param>
  <param-name>org.apache.myfaces.EL_RESOLVER_PREDICATE</param-name>
  <param-value>org.foo.bazz.ELResolverPredicate</param-value>
</context-param>

Filter is simple instance of org.apache.commons.collections.Predicate.


For application where no ManagedBean(Resolver) is used or no Flash, user
can simply return false from Predicate.evaluate and ELResolver won't be
installed.

WDYT?

Regards,

Kočičák