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From "Doron Cohen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-569) NearSpans skipTo bug
Date Fri, 27 Oct 2006 22:45:17 GMT
    [ http://issues.apache.org/jira/browse/LUCENE-569?page=comments#action_12445284 ] 
            
Doron Cohen commented on LUCENE-569:
------------------------------------

It seems that having  "assert()"   in NearSpanOrdered.java now required Java 1.5 in order
to compile Lucene. This would require 1.5 for running Lucene. Do we want to include this now?

> NearSpans skipTo bug
> --------------------
>
>                 Key: LUCENE-569
>                 URL: http://issues.apache.org/jira/browse/LUCENE-569
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Search
>            Reporter: Hoss Man
>         Assigned To: Hoss Man
>         Attachments: common-build.assertions.patch, LUCENE-569.ubber.patch, NearSpans20060903.patch,
NearSpansOrdered.java, NearSpansUnordered.java, SpanNearQuery20060622.patch, SpanScorer.explain.testcase.patch,
TestNearSpans.java
>
>
> 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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