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From "Yonik Seeley (JIRA)" <>
Subject [jira] [Commented] (LUCENE-4924) Make DocIdSetIterator.docID() return -1 when not positioned
Date Wed, 10 Apr 2013 12:24:16 GMT


Yonik Seeley commented on LUCENE-4924:

Undefined can sometimes lead to more efficient implementations in certain circumstances. 
IIRC this was actually true of some iterators at some point in the past, but I don't know
if it's still the case.
> Make DocIdSetIterator.docID() return -1 when not positioned
> -----------------------------------------------------------
>                 Key: LUCENE-4924
>                 URL:
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Minor
>             Fix For: 5.0
> Today DocIdSetIterator.docID() can either return -1 or NO_MORE_DOCS when the enum is
not positioned. I would like to only allow it to return -1 so that we can have better assertions.
> (This proposal is for trunk only.)

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