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From "Jakob Korherr (JIRA)" <>
Subject [jira] Resolved: (MYFACES-2601) java.lang.NoSuchFieldException when MyFaces and Mojarra are on the classpath
Date Fri, 12 Mar 2010 12:48:27 GMT


Jakob Korherr resolved MYFACES-2601.

       Resolution: Fixed
    Fix Version/s: 2.0.0-beta-3

> java.lang.NoSuchFieldException when MyFaces and Mojarra are on the classpath
> ----------------------------------------------------------------------------
>                 Key: MYFACES-2601
>                 URL:
>             Project: MyFaces Core
>          Issue Type: Bug
>          Components: JSR-314
>    Affects Versions: 2.0.0-beta-3
>         Environment: GlassFish v3
>            Reporter: Jakob Korherr
>            Assignee: Jakob Korherr
>             Fix For: 2.0.0-beta-3
> When starting MyFaces with the appropriate configurations in GlassFish's sun-web.xml,
everything functions properly except for this ugly Exception at startup:
> SCHWERWIEGEND: Cannot find private field _firstInstance from ExternalContext 
> java.lang.NoSuchFieldException: _firstInstance
> 	at java.lang.Class.getDeclaredField(
> 	at org.apache.myfaces.context.FacesContextFactoryImpl.<init>(
> This is caused because MyFaces provides this field in its implementation of javax.faces.context.ExternalContext,
but Mojarra does not. And althought we set the right configuration parameters for using MyFaces,
GlassFish wants to use Mojarra's version of this class when accessing the field via reflection.
> The solution to this is very easy. We just have to store _firstInstance in a package
private class with a specific name (_MyFacesExternalContextHelper) so we won't run into any
classloading problems.

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