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Posted to dev@lucene.apache.org by "Jan Høydahl (JIRA)" <ji...@apache.org> on 2013/03/06 00:02:13 UTC
[jira] [Commented] (SOLR-2660) omitPositions improvements
[ https://issues.apache.org/jira/browse/SOLR-2660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13594061#comment-13594061 ]
Jan Høydahl commented on SOLR-2660:
-----------------------------------
Can we consider commit a first part of this to lay the foundation for fixing the exception, as discussed in this thread http://search-lucene.com/m/t168517UJ5l1
> omitPositions improvements
> --------------------------
>
> Key: SOLR-2660
> URL: https://issues.apache.org/jira/browse/SOLR-2660
> Project: Solr
> Issue Type: Improvement
> Affects Versions: 3.3, 4.0-ALPHA
> Reporter: Robert Muir
> Priority: Minor
> Attachments: SOLR-2660.patch
>
>
> followup to LUCENE-2048:
> Adds factory methods getPhraseQuery/getMultiPhraseQuery to QP, this way you can subclass it and customize behavior, particularly
> * by default, Solr throws exception here if the fieldtype omits positions: rather than 3.x's silent failure of no results, and even for trunk its nicer to fail during query parsing rather than waiting for lucene's failure during execution.
> * adds phraseAsBoolean, which allows you to downgrade these phrase/multiphrase queries to boolean queries: this is a nice option in conjunction with our word n-gram filters (shingle/commongrams/etc)for a fast "approximation", if your application can tolerate some false positives, e.g. "foo bar" -> termQuery(foo_bar), "foo bar baz" -> BQ(foo_bar AND bar_baz)
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