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] Assigned: (LUCENE-1603) Changes for TrieRange in FilteredTermEnum and MultiTermQuery improvement
Date Tue, 14 Apr 2009 16:58:15 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-1603?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael McCandless reassigned LUCENE-1603:
------------------------------------------

    Assignee: Michael McCandless

> Changes for TrieRange in FilteredTermEnum and MultiTermQuery improvement
> ------------------------------------------------------------------------
>
>                 Key: LUCENE-1603
>                 URL: https://issues.apache.org/jira/browse/LUCENE-1603
>             Project: Lucene - Java
>          Issue Type: Improvement
>    Affects Versions: 2.4, 2.9
>            Reporter: Uwe Schindler
>            Assignee: Michael McCandless
>             Fix For: 2.9
>
>         Attachments: LUCENE-1603.patch
>
>
> This is a patch, that is needed for the MultiTermQuery-rewrite of TrieRange (LUCENE-1602):
> - Make the private members protected, to have access to them from the very special TrieRangeTermEnum

> - Fix a small inconsistency (docFreq() now only returns a value, if a valid term is existing)
> - Improvement of MultiTermFilter.getDocIdSet to return DocIdSet.EMPTY_DOCIDSET, if the
TermEnum is empty (less memory usage) and faster.
> - Add the getLastNumberOfTerms() to MultiTermQuery for statistics on different multi
term queries and how may terms they affect, using this new functionality, the improvement
of TrieRange can be shown (extract from test case there, 10000 docs index, long values):
> {code}
> [junit] Average number of terms during random search on 'field8':
> [junit]  Trie query: 244.2
> [junit]  Classical query: 3136.94
> [junit] Average number of terms during random search on 'field4':
> [junit]  Trie query: 38.3
> [junit]  Classical query: 3018.68
> [junit] Average number of terms during random search on 'field2':
> [junit]  Trie query: 18.04
> [junit]  Classical query: 3539.42
> {code}
> All core tests pass.

-- 
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