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https://issues.apache.org/jira/browse/MYFACES-2827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12889867#action_12889867
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Jakob Korherr commented on MYFACES-2827:
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Just for clarification: The CCE happens, because
ValueExpression.getValueReference() returns a ValueReference to the Map. This
ValueReference returns the Map itself by calling getBase() and the used key in
the Map by calling getProperty() (which is a Long in Mark's example).
Thus we cannot simply cast to a String here.
> 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
> Assignee: Jakob Korherr
>
> 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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