[jira] Commented: (EL-8) [el] Implementation of parseExpression does not implement spec

["Jamie Taylor (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/EL-8?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12525156 ] 

Jamie Taylor commented on EL-8:
-------------------------------

Glad I could contribute.

> [el] Implementation of parseExpression does not implement spec
> --------------------------------------------------------------
>
>                 Key: EL-8
>                 URL: https://issues.apache.org/jira/browse/EL-8
>             Project: Commons EL
>          Issue Type: Bug
>    Affects Versions: 1.0
>         Environment: Operating System: All
> Platform: All
>            Reporter: Jamie Taylor
>            Assignee: Henri Yandell
>             Fix For: 1.1
>
>         Attachments: EL-8-Jamie.patch, EL-8.patch, function-binding.txt, TestFunctionBinding.java, TestFunctionBinding.java
>
>
> The implementation of parseExpression in the EL expression evaluator does not conform to the JSP 2.0 specification.  The javadoc for the fMapper argument states that 
> "The ExpressionEvaluatormustnotholdontotheFunctionMapperreferenceafter returning fromparseExpression(). TheExpression object returned must invoke the same functions regardless of whether the mappings in the providedFunctionMapper instance change between calling ExpressionEvaluator.parseExpression() andExpression.evaluate()."
> The test case which I will attach clearly shows that this is not the case.
> Why hasn't anybody noticed this before, you may ask?  I suspect that the current implementation of Tomcat never updates the bindings in its function mapper once one is constructed, since the functions are defined at web-app load time and can't be updated after that.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.