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From "Moti Nisenson (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-1330) 0 position increment not properly supported for the first token
Date Tue, 08 Jul 2008 08:09:32 GMT
0 position increment not properly supported for the first token
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                 Key: LUCENE-1330
                 URL: https://issues.apache.org/jira/browse/LUCENE-1330
             Project: Lucene - Java
          Issue Type: Bug
          Components: Javadocs, Store
            Reporter: Moti Nisenson


Setting a position increment of 0 for the first token in a field results in its "absolute
position" (as well as increment) being read back later as Integer.MIN_VALUE.

This is a result of how the information gets written out in DocumentsWriter: position should
not be updated using += t.getPositionIncrement() - 1; and then always ++'ed in addPosition.
It would be much simpler just to update it using t.getPositionIncrement().

While this is fairly easy to fix in DocumentsWriter, one could just update the documentation
for Token.setPositionIncrement() to indicate that for indexing purposes the first Token in
a field must have a positive position increment.

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