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https://issues.apache.org/jira/browse/JCR-989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12517698
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Felix Meschberger commented on JCR-989:
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+1

I like the addition to jackrabbit-api. Any other solution would prevent 
usefullness in environments where access to jackrabbit-core is not possible, 
such as in a web application running in a different class loader than the 
repository.

> 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
>         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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