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From "Marcel Reutegger (JIRA)" <j...@apache.org>
Subject [jira] Created: (JCR-99) Introduce cache for frequently used index lookups
Date Thu, 07 Apr 2005 09:01:53 GMT
Introduce cache for frequently used index lookups
-------------------------------------------------

         Key: JCR-99
         URL: http://issues.apache.org/jira/browse/JCR-99
     Project: Jackrabbit
        Type: Improvement
  Components: xpath  
 Environment: svn rev: 160385
    Reporter: Marcel Reutegger


Some queries heavily use hierarchy relations to resolve location steps. E.g. ChildAxisQuery
or DescendantSelfAxisQuery. Currently those hierarchy relations are looked up from the native
lucene index which is not very efficient. The index should maintain a cache of frequently
used hierarchy lookups. 
That is, calls like IndexReader.termDocs() on terms with field: UUID or PARENT

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