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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-7303) Avoid NPE if classField doesn't exist in SNBC
Date Thu, 26 May 2016 14:20:12 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-7303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15302136#comment-15302136
] 

ASF subversion and git services commented on LUCENE-7303:
---------------------------------------------------------

Commit 8c6493151738314420ce5ffb678dbb9170c64d9a in lucene-solr's branch refs/heads/branch_6x
from [~teofili]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=8c64931 ]

LUCENE-7303 - avoid NPE in MultiFields.getTerms(leafReader, classFieldName), removed duplicated
code in DocumentSNBC
(cherry picked from commit 8808cf5)


> Avoid NPE if classField doesn't exist in SNBC
> ---------------------------------------------
>
>                 Key: LUCENE-7303
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7303
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: modules/classification
>            Reporter: Tommaso Teofili
>            Assignee: Tommaso Teofili
>             Fix For: 6.1
>
>
> {{SimpleNaiveBayesClassifier}} uses _MultiFields.getTerms(leafReader, classFieldName)._
but doesn't check if the resulting _Terms_ is null or not.
> While that is unlikely to happen (it doesn't make much sense to use a classifier without
specifying an existing class field), it may happen during testing and therefore better to
avoid throwing a NPE.



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