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https://issues.apache.org/jira/browse/MYFACES-2827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12889834#action_12889834
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Jan-Kees van Andel commented on MYFACES-2827:
---------------------------------------------

I can't imagine the String assumption being wrong, so can you please add some 
info regarding how you got that Long into your component?

Like: 
- Are you in a JEE6 container (with the new Unified EL)?
- Are you using bean validation inside a composite component?
- Do you have some code to show what you're doing?

> CCE if component values are not of type String
> ----------------------------------------------
>
>                 Key: MYFACES-2827
>                 URL: https://issues.apache.org/jira/browse/MYFACES-2827
>             Project: MyFaces Core
>          Issue Type: Bug
>    Affects Versions: 2.0.1
>            Reporter: Mark Struberg
>
> Somehow I did get a Long into my component. This leads to the following 
> Exception:
> java.lang.ClassCastException: java.lang.Long cannot be cast to 
> java.lang.String
>       at javax.faces.validator.BeanValidator.validate(BeanValidator.java:145)
>       at 
> javax.faces.component._ComponentUtils.callValidators(_ComponentUtils.java:173)
>       at javax.faces.component.UIInput.validateValue(UIInput.java:425)
>       at javax.faces.component.UIInput.validate(UIInput.java:537)
>       at javax.faces.component.UIInput.processValidators(UIInput.java:240)
>       at javax.faces.component.UIData.process(UIData.java:1043)

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