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https://issues.apache.org/jira/browse/WICKET-1270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Jaeckle updated WICKET-1270:
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Attachment: WICKET-1270.patch
Simple patch which first checks if getConvertedInput() is null.
> NPE in ListMultipleChoice.updateModel()
> ---------------------------------------
>
> Key: WICKET-1270
> URL: https://issues.apache.org/jira/browse/WICKET-1270
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.3.0-final
> Reporter: Thomas Jaeckle
> Attachments: WICKET-1270.patch
>
>
> I noticed a NullPointerException when I cleared a Form with a
> ListMultipleChoice to its original state.
> In updateModel() following statement causes a NPE when something was selected
> in the multiple select but in the original state nothing was selected:
> selectedValues.addAll((Collection)getConvertedInput());
> getConvertedInput() is null, so ArrayList.addAll() operates on the null value
> and throws the NPE.
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