Optimize Action System
----------------------

                 Key: NXP-2773
                 URL: http://jira.nuxeo.org/browse/NXP-2773
             Project: Nuxeo Enterprise Platform
          Issue Type: Improvement
            Reporter: Thierry Delprat
            Assignee: Thierry Delprat
             Fix For: 5.2 M3
         Attachments: NXP-2773.diff

When profiling JSF WebApp a lot of time is spent in the action system.
This makes sens since actions are used a lot during page construction.
But the profiler shows that we spend most of the time creating el expressions 
rather than evaluating them.

The ratio is really significant 85% of the time is spent in el expression 
creation.parsing.
The apache el doc does not say is el expression is threadsafe or not : by 
default, I assume they are not.
See an attached "patch" for that.


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