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Posted to dev@myfaces.apache.org by "Nikolay Petrov (JIRA)" <de...@myfaces.apache.org> on 2006/09/22 15:49:24 UTC

[jira] Updated: (MYFACES-738) Exceptions thrown during processing of EL statements are not displayed with the underlying cause, and there is no log message.

     [ http://issues.apache.org/jira/browse/MYFACES-738?page=all ]

Nikolay Petrov updated MYFACES-738:
-----------------------------------

    Status: Patch Available  (was: Open)

> Exceptions thrown during processing of EL statements are not displayed with the underlying cause, and there is no log message.
> ------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: MYFACES-738
>                 URL: http://issues.apache.org/jira/browse/MYFACES-738
>             Project: MyFaces Core
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>            Reporter: Andrew Harris
>
> Very difficult to identify exceptions that are thrown during processing of EL statements, since all information is swallowed without logging.
> org.apache.myfaces.el.PropertyResolverImpl.getProperty catches a Throwable exception and creates a new EvaluationException
> This is then caught by org.apache.myfaces.el.PropertyResolverImpl.getValue as a RuntimeException and then throws a new EvaluationException.
> This is in turn caught by the org.apache.myfaces.el.ValueBindingImpl.getValue method Exception catch and another new EvaluationException is thown.  
> The error message on the UI is "Exception: javax.faces.el.EvaluationException: Cannot get value for expression '#{erHandler.expectedReceipt.seqno}'" which has lost all trace of the underlying exception.
> Would be better to have the information from the underlying exception in the error message in the UI.  If this is not practical, then a logged message would greatly facilitate debugging.

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