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From "Christoph Kiehl (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-989) Modify LazyQueryResultImpl to allow resultFetchSize to be set programmatically
Date Tue, 14 Aug 2007 08:31:30 GMT

    [ https://issues.apache.org/jira/browse/JCR-989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12519626
] 

Christoph Kiehl commented on JCR-989:
-------------------------------------

Okay. What to do now? Based on the discussion on the dev list (http://www.nabble.com/JCR-2.0-extensions-tf4235046.html#a12049594)
it seems like everyone agrees that we should start to make the jsr283 api available in Jackrabbit
(e.g. in the org.apache.jackrabbit.jsr283 package). Should I remove the JackrabbitQuery interface?
But I think we should the push the effort make the jsr283 api availble.

> Modify LazyQueryResultImpl to allow resultFetchSize to be set programmatically
> ------------------------------------------------------------------------------
>
>                 Key: JCR-989
>                 URL: https://issues.apache.org/jira/browse/JCR-989
>             Project: Jackrabbit
>          Issue Type: New Feature
>          Components: query
>    Affects Versions: 1.3
>            Reporter: Christoph Kiehl
>            Assignee: Christoph Kiehl
>            Priority: Minor
>             Fix For: 1.4
>
>         Attachments: jackrabbit-api.patch, jackrabbit-core.patch
>
>
> In our application we have a search which only shows part of a query result. We always
know which part of the result needs to be shown. This means we know in advance how many results
need to be fetched. I would like to be able to programmatically set resultFetchSize to minimize
the number of loaded lucene docs and therefore improve the performance.
> I know it is already possible to the set the resultFetchSize via the index configuration,
but this number is fixed and doesn't work well in environments where you use paging for your
results because if you set this number too low the query will be executed multiple times and
if you set it too high too many lucene docs are loaded.

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