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From "Robert Muir (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (LUCENE-5677) Simplify position handling in DefaultIndexingChain
Date Sat, 17 May 2014 13:22:15 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-5677?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Muir resolved LUCENE-5677.
---------------------------------

       Resolution: Fixed
    Fix Version/s: 5.0
                   4.9

> Simplify position handling in DefaultIndexingChain
> --------------------------------------------------
>
>                 Key: LUCENE-5677
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5677
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Robert Muir
>             Fix For: 4.9, 5.0
>
>         Attachments: LUCENE-5677.patch, LUCENE-5677.patch
>
>
> There are currently a ton of conditionals checking for various problems, as well as a
horribly confusing unbalanced decrement + increment, and in general the code is a nightmare
to follow.
> To make it worse, besides being confusing it doesnt handle all cases: e.g. a negative
position increment gap from the analyzer will just result in total chaos (corruption etc).
> I think an easier way to implement this is to init fieldinvertstate.position to -1, and
for the logic to be:
> {code}
>   position += posincr;
>   check that position >= 0 && position >= lastPosition
>   lastPosition = position;
> {code}



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