lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3087) highlighting exact phrase with overlapping tokens fails.
Date Thu, 12 May 2011 15:46:47 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13032468#comment-13032468
] 

Michael McCandless commented on LUCENE-3087:
--------------------------------------------

Ahh, interesting.

So... maybe we should fix the code so that if in fact positions were included in the TVs,
we use them?  Else, we fallback to the offset check to guess at the posIncr?  Could that work?

> highlighting exact phrase with overlapping tokens fails.
> --------------------------------------------------------
>
>                 Key: LUCENE-3087
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3087
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: contrib/highlighter
>    Affects Versions: 2.9.4, 3.1
>            Reporter: Pierre Gossé
>            Assignee: Michael McCandless
>            Priority: Minor
>             Fix For: 3.2, 4.0
>
>         Attachments: LUCENE-3087.patch
>
>
> Fields with overlapping token are not highlighted in search results when searching exact
phrases, when using TermVector.WITH_OFFSET.
> The document builded in MemoryIndex for highlight does not preserve positions of tokens
in this case. Overlapping tokens get "flattened" (position increment always set to 1), the
spanquery used for searching relevant fragment will fail to identify the correct token sequence
because the position shift.
> I corrected this by adding a position increment calculation in sub class StoredTokenStream.
I added junit test covering this case.
> I used the eclipse codestyle from trunk, but style add quite a few format differences
between repository and working copy files. I tried to reduce them, but some linewrapping rules
still doesn't match.
> Correction patch joined

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org


Mime
View raw message