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https://issues.apache.org/jira/browse/DERBY-5947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen resolved DERBY-5947.
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Resolution: Fixed
Issue & fix info: (was: Patch Available)
Committed revision 1413586. Resolving the issue again.
> Factor out common code from generated classes
> ---------------------------------------------
>
> Key: DERBY-5947
> URL: https://issues.apache.org/jira/browse/DERBY-5947
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Priority: Minor
> Fix For: 10.10.0.0
>
> Attachments: d5947-1a-remove-common-methods.diff,
> d5947-2a-execute-method.diff, d5947-3a-init-rs.diff,
> d5947-4a-authorization.diff, d5947-5a-row-count-stats.diff,
> natural-join-after-3a.txt, natural-join-decompiled.txt, values1-after-1a.txt,
> values1-after-2a.txt, values1-after-3a.txt, values1-after-4a.txt,
> values1-decompiled.txt
>
>
> There's some code that's added to all classes generated by Derby's query
> compiler. For example, there are three static fields that contain statistics
> used to check if the plan is stale, and there are getter and setter methods
> for each of the three fields. The fields and their accessor methods take up
> 468 bytes in every generated class.
> We should see if we can factor out some of this code so that there is a
> single shared copy in BaseActivation. Advantages would be: less complicated
> byte-code generation, less memory occupied by generated classes in the
> statement cache, smaller disk footprint for stored prepared statements.
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