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https://issues.apache.org/jira/browse/DERBY-1224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dag H. Wanvik updated DERBY-1224:
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Derby Categories: [Performance]
> Remove unused variables in DatabaseMetaData
> -------------------------------------------
>
> Key: DERBY-1224
> URL: https://issues.apache.org/jira/browse/DERBY-1224
> Project: Derby
> Issue Type: Improvement
> Components: JDBC, Network Client
> Affects Versions: 10.2.1.6
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Priority: Minor
> Fix For: 10.2.1.6
>
> Attachments: derby-1224-v1.diff, derby-1224-v1.stat
>
>
> org.apache.derby.client.am.DatabaseMetaData has a number of instance
> variables which don't seem to have any purpose:
> lastGetColumnPrivilegesResultSet_
> lastGetColumnsResultSet_
> lastGetForeignKeysResultSet_
> lastGetPrimaryKeysResultSet_
> lastGetProcedureColumnsResultSet_
> lastGetProceduresResultSet_
> lastGetSpecialColumnsResultSet_
> lastGetStatisticsResultSet_
> lastGetTablePrivilegesResultSet_
> lastGetTablesResultSet_
> lastGetUDTsResultSet_
> lastGetTypeInfoResultSet_
> lastGetAttrResultSet_
> lastGetSuperTypesResultSet_
> lastGetSuperTablesResultSet_
> Each lastGetXXXResultSet_ variable is set when the corresponding
> getXXX method is invoked. However, the variables are never read, so
> they could just as well be removed. Removing them will reduce the
> memory footprint.
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