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Posted to dev@mahout.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2010/06/07 18:23:45 UTC

[jira] Commented: (MAHOUT-410) NPE when calling hasPreferenceValues or getPreferenceValues on newly created FileDataModel

    [ https://issues.apache.org/jira/browse/MAHOUT-410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876299#action_12876299 ] 

Hudson commented on MAHOUT-410:
-------------------------------

Integrated in Mahout-Quality #54 (See [http://hudson.zones.apache.org/hudson/job/Mahout-Quality/54/])
    MAHOUT-410


> 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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