Improve EL Exceptions wrapping
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Key: MYFACES-3202
URL: https://issues.apache.org/jira/browse/MYFACES-3202
Project: MyFaces Core
Issue Type: Sub-task
Reporter: Martin Kočí
Priority: Minor
>From MYFACES-3053 "user should see not just a cryptic stack trace, but the EL
>expression that was being evaluated including the part of the EL expression
>that triggered the problem"
Myfaces utilize TagValueExpression and TagValueExpressionUEL as
TagAtrribute-aware wrappers around EL ValueExpression. But this "context" is
only .toString() of TagAttribute and that prohibits user-frendly formatting of
messages.
Provide TagAttribute instance, create TagAttributeAwareExceptionWrapper that
will hold this instance. Clients (mainly ErrorPage) can read attributes of
TagAttribute and format it as necessary, for example "EL expression that
triggered the problem: " + wrapper.getTagAttribute().getValue()
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