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From "Ron Pressler (JIRA)" <j...@apache.org>
Subject [jira] Created: (OPENJPA-703) Cache ResultObjectProvider data to improve query performance
Date Mon, 25 Aug 2008 17:09:44 GMT
Cache ResultObjectProvider data to improve query performance
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                 Key: OPENJPA-703
                 URL: https://issues.apache.org/jira/browse/OPENJPA-703
             Project: OpenJPA
          Issue Type: Improvement
          Components: kernel
            Reporter: Ron Pressler


Profiling indicated that JDBCStoreQuery.populateSelect consumes a significant amount of CPU,
and is executed every time a query is run. While, in fact, the actual PreparedStatement is
created and run only in QueryImpl.toResult. It seems like the returned ResultObjectProvider
from JDBCStoreQuery.executeQuery can be at least partially cached, or even cached in its entirety
(provided care is taken with the context parameters). 
It seems like such an improvement would significantly improve query performance.

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