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From "Robert Muir (JIRA)" <>
Subject [jira] [Created] (LUCENE-5677) Simplify position handling in DefaultIndexingChain
Date Sat, 17 May 2014 05:56:14 GMT
Robert Muir created LUCENE-5677:

             Summary: Simplify position handling in DefaultIndexingChain
                 Key: LUCENE-5677
             Project: Lucene - Core
          Issue Type: Bug
            Reporter: Robert Muir
         Attachments: 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:

  position += posincr;
  check that position >= 0 && position >= lastPosition
  lastPosition = position;

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