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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1926) Back compat break with old next() consumer API
Date Fri, 25 Sep 2009 15:49:16 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12759588#action_12759588
] 

Robert Muir commented on LUCENE-1926:
-------------------------------------

bq. You did not waste my time, it was more my health. I got a heart attack when I read "Back
compat break in old next()..." 

I had to grab your attention since I couldn't figure it out :) 
If you want, you should change the title to "Bug in Robert Muir's naive code"... I deserve
it for giving you heart failures.
The javadoc patch you uploaded might help to prevent someone from creating similar bugs in
the future.


> Back compat break with old next() consumer API
> ----------------------------------------------
>
>                 Key: LUCENE-1926
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1926
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Analysis
>    Affects Versions: 2.9
>            Reporter: Robert Muir
>         Attachments: CaptureStateTestcase.java, LUCENE-1926.patch
>
>
> There is a bug that causes tokenstreams to return different results, depending upon whether
they are consumed with the incrementToken() api or the next() api.
> I found this because the Solr analysis tool in the admin page uses the next() api, and
i was seeing strange results.
> I've created a test case to show the problem. when calling captureState(),  the current
state is erased, but only when consuming with the next() api.
> If I consume with incrementToken(), things work. 
> {code}
> State tempState = captureState(); // after we capture state here, things get strange.
> String right = termAtt.term(); // when using old consumer API, this value is wrong!!!!
> {code}

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