[jira] [Reopened] (LUCENE-3179) OpenBitSet.prevSetBit()

["Uwe Schindler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-3179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Uwe Schindler reopened LUCENE-3179:
-----------------------------------


The testcase for prevSetBit has a bug, that was found by testing with java 5. It assumes that the allocation strategy for BitSet and OpenBitSet is identical, which it is not. E.g. Java 5's new BitSet(0) allocates still one word, while OpenBitSet does not.

The attached patch fixes the issue.

> OpenBitSet.prevSetBit()
> -----------------------
>
>                 Key: LUCENE-3179
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3179
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Paul Elschot
>            Priority: Minor
>             Fix For: 3.3, 4.0
>
>         Attachments: LUCENE-3179.patch, LUCENE-3179.patch, LUCENE-3179.patch, TestBitUtil.java, TestOpenBitSet.patch
>
>
> Find a previous set bit in an OpenBitSet.
> Useful for parent testing in nested document query execution LUCENE-2454 .

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