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https://issues.apache.org/jira/browse/EL-8?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12521383
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Henri Yandell commented on EL-8:
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Ack. I hadn't realized that function-binding.txt was a patch. Brain was
completely turned off.
Guess I need to get my head around that. Given its size - can I get you to
comment that it's intended to be licensed to the ASF?
> [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
> Fix For: 1.1
>
> Attachments: 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.
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