[ http://issues.apache.org/jira/browse/LUCENE-569?page=all ]
paul.elschot updated LUCENE-569:
--------------------------------
Attachment: SpanNearQuery20060622.patch
The patch to SpanNearQuery at the other issue still uses NearSpans.
Using the patch attached here, NearSpans is not used anymore.
> NearSpans skipTo bug
> --------------------
>
> Key: LUCENE-569
> URL: http://issues.apache.org/jira/browse/LUCENE-569
> Project: Lucene - Java
> Type: Bug
> Components: Search
> Reporter: Hoss Man
> Attachments: NearSpansOrdered.java, NearSpansUnordered.java,
> SpanNearQuery20060622.patch, SpanScorer.explain.testcase.patch,
> TestNearSpans.java, common-build.assertions.patch
>
> NearSpans appears to have a bug in skipTo that causes it to skip over some
> matching documents completely. I discovered this bug while investigating
> problems with SpanWeight.explain, but as far as I can tell the Bug is not
> specific to Explanations ... it seems like it could potentially result in
> incorrect matching in some situations where a SpanNearQuery is nested in
> another query such thatskipTo will be used ... I tried to create a high level
> test case to exploit the bug when searching, but i could not. TestCase
> exploiting the class using NearSpan and SpanScorer will follow...
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