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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 15:45:16 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12759585#action_12759585
] 

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

{quote}
Shingle was reviewed and changed by me, I think this one is OK. The problem you described
could have been catched by backwards tests, but these are only running for core, not contrib.
{quote}

Uwe, again I apologize, thanks for explaining it to me. I thought I had found something when
i saw different results from incrementToken versus next, but clearly all I found was a bug
in my code :)

> 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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