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Posted to oak-issues@jackrabbit.apache.org by "Thomas Mueller (JIRA)" <ji...@apache.org> on 2013/05/13 15:27:18 UTC

[jira] [Resolved] (OAK-816) Property index: restrictions of the type "x > 10" can be processed as "x is not null"

     [ https://issues.apache.org/jira/browse/OAK-816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Mueller resolved OAK-816.
--------------------------------

    Resolution: Fixed

Revision 1481841
                
> Property index: restrictions of the type "x > 10" can be processed as "x is not null"
> -------------------------------------------------------------------------------------
>
>                 Key: OAK-816
>                 URL: https://issues.apache.org/jira/browse/OAK-816
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: core, query
>            Reporter: Thomas Mueller
>            Assignee: Thomas Mueller
>            Priority: Minor
>
> The property index is currently used for matches ("x = 123") as well as for existence restrictions ("x is not null").
> Because index data is not sorted, a property index can not be used very efficiently for range restrictions ("x > 100"; "x between 10 and 20"). However, for such cases, the index can still be used to check existence. In many cases this is still much better than traversing all nodes. 

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