lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Mark Harwood (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1486) Wildcards, ORs etc inside Phrase queries
Date Thu, 11 Jun 2009 18:13:07 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12718573#action_12718573
] 

Mark Harwood commented on LUCENE-1486:
--------------------------------------

Perhaps "hacky" was too strong a word. I think it's a reasonable approach to handling the
complexity involved in this logic. 

A colleague of mine has this running in production on a big installation with lots of users

> Wildcards, ORs etc inside Phrase queries
> ----------------------------------------
>
>                 Key: LUCENE-1486
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1486
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: QueryParser
>    Affects Versions: 2.4
>            Reporter: Mark Harwood
>            Priority: Minor
>             Fix For: 2.9
>
>         Attachments: ComplexPhraseQueryParser.java, TestComplexPhraseQuery.java
>
>
> An extension to the default QueryParser that overrides the parsing of PhraseQueries to
allow more complex syntax e.g. wildcards in phrase queries.
> The implementation feels a little hacky - this is arguably better handled in QueryParser
itself. This works as a proof of concept  for much of the query parser syntax. Examples from
the Junit test include:
> 		checkMatches("\"j*   smyth~\"", "1,2"); //wildcards and fuzzies are OK in phrases
> 		checkMatches("\"(jo* -john)  smith\"", "2"); // boolean logic works
> 		checkMatches("\"jo*  smith\"~2", "1,2,3"); // position logic works.
> 		
> 		checkBadQuery("\"jo*  id:1 smith\""); //mixing fields in a phrase is bad
> 		checkBadQuery("\"jo* \"smith\" \""); //phrases inside phrases is bad
> 		checkBadQuery("\"jo* [sma TO smZ]\" \""); //range queries inside phrases not supported
> Code plus Junit test to follow...

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


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


Mime
View raw message