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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1748) getPayloadSpans on org.apache.lucene.search.spans.SpanQuery should be abstract
Date Tue, 04 Aug 2009 16:08:14 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12739017#action_12739017
] 

Mark Miller commented on LUCENE-1748:
-------------------------------------

Okay - my first time messing with the back compat tests, and changing the src felt dirty -
but nothing else that can be done, and as you say, it doesn't hurt anything. Ive got things
worked out locally.

I'll give a shot at commiting this later today.

> getPayloadSpans on org.apache.lucene.search.spans.SpanQuery should be abstract
> ------------------------------------------------------------------------------
>
>                 Key: LUCENE-1748
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1748
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Query/Scoring
>    Affects Versions: 2.4, 2.4.1
>         Environment: all
>            Reporter: Hugh Cayless
>            Assignee: Mark Miller
>             Fix For: 2.9, 3.0, 3.1
>
>         Attachments: LUCENE-1748.patch, LUCENE-1748.patch
>
>
> I just spent a long time tracking down a bug resulting from upgrading to Lucene 2.4.1
on a project that implements some SpanQuerys of its own and was written against 2.3.  Since
the project's SpanQuerys didn't implement getPayloadSpans, the call to that method went to
SpanQuery.getPayloadSpans which returned null and caused a NullPointerException in the Lucene
code, far away from the actual source of the problem.  
> It would be much better for this kind of thing to show up at compile time, I think.
> Thanks!

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