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https://issues.apache.org/jira/browse/JCR-1251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12547618
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Ard Schrijvers commented on JCR-1251:
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By the way: do not think you should commit the patch like it is now :
Arrays.copyOf is not supported for java < 1.6. Use System.arraycopy.
Furthermore, I have tested as well, and performance gain is indeed very large!
Nice improvement!
> DescendantSelfAxisQuery creates too many object instances
> ---------------------------------------------------------
>
> Key: JCR-1251
> URL: https://issues.apache.org/jira/browse/JCR-1251
> Project: Jackrabbit
> Issue Type: Improvement
> Components: jackrabbit-core, query
> Reporter: Christoph Kiehl
> Assignee: Christoph Kiehl
> Priority: Minor
> Fix For: 1.4
>
> Attachments: DescendantSelfAxisQuery-patch.txt
>
>
> In DescendantSelfAxisQuery.DescendantSelfAxisScorer.isValid() there is an
> ArrayList and an Integer instance created on every call. Since this method
> gets called really often during queries the object creation/gc affects
> performance.
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