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https://issues.apache.org/jira/browse/MAHOUT-410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved MAHOUT-410.
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Assignee: Sean Owen
Fix Version/s: 0.4
Resolution: Fixed
Good one, fixed.
> NPE when calling hasPreferenceValues or getPreferenceValues on newly created
> FileDataModel
> --------------------------------------------------------------------------------------------
>
> Key: MAHOUT-410
> URL: https://issues.apache.org/jira/browse/MAHOUT-410
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.3
> Reporter: Frank Scholten
> Assignee: Sean Owen
> Priority: Trivial
> Fix For: 0.4
>
> Attachments: FileDataModel_checkLoaded.patch
>
> Original Estimate: 0.08h
> Remaining Estimate: 0.08h
>
> An NPE gets thrown when calling hasPreferenceValues() or
> getPreferenceValue(long userID, long itemID) on a newly created
> FileDataModel. This happens because these methods do not call checkLoaded()
> before forwarding the method call to the delegate. Other overridden methods
> do call checkLoaded(). Seems like a bug.
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