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Date: Fri, 24 Aug 2007 07:07:31 -0700 (PDT)
From: "Ard Schrijvers (JIRA)" <jira@apache.org>
To: dev@jackrabbit.apache.org
Subject: [jira] Commented: (JCR-1064) Optimize queries that check for the
 existence of a property
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    [ https://issues.apache.org/jira/browse/JCR-1064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12522537 ] 

Ard Schrijvers commented on JCR-1064:
-------------------------------------

Just had my patch ready (again :-) )

Is it an idea to add the patch, and file a jira issue to refactor the initial creation logic into doInit()

I don't mind trying to do that one, but would like to first patch this one, and then solve the init logic, WDYT?


> Optimize queries that check for the existence of a property
> -----------------------------------------------------------
>
>                 Key: JCR-1064
>                 URL: https://issues.apache.org/jira/browse/JCR-1064
>             Project: Jackrabbit
>          Issue Type: Improvement
>          Components: indexing
>    Affects Versions: 1.3.1
>            Reporter: Ard Schrijvers
>            Priority: Minor
>             Fix For: 1.4
>
>         Attachments: JCR-1064-DEPR.patch
>
>
> //*[@mytext] is transformed into the org.apache.jackrabbit.core.query.lucene.MatchAllQuery, that through the MatchAllWeight uses the MatchAllScorer.  The calculateDocFilter() in MatchAllScorer  does not scale and becomes slow for growing number of nodes. 
> Solution: lucene documents will get a new Field:
> public static final String PROPERTIES_SET = "_:PROPERTIES_SET".intern();
> that holds the available properties of this document. 
> NOTE: Lucene indices build without this performance improvement should still work and fall back to the original implementation

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