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From "Daniel John Debrunner (JIRA)" <derby-...@db.apache.org>
Subject [jira] Resolved: (DERBY-1700) Remove passing of closeCleanup method to every ResultSet type since only the top ResultSet requires it.
Date Fri, 22 Sep 2006 19:05:23 GMT
     [ http://issues.apache.org/jira/browse/DERBY-1700?page=all ]

Daniel John Debrunner resolved DERBY-1700.
------------------------------------------

    Fix Version/s: 10.2.1.0
                   10.3.0.0
       Resolution: Fixed

Fixed in trunk and merged to 10.2 by Rick.

> Remove passing of closeCleanup method to every ResultSet type since only the top ResultSet
requires it.
> -------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-1700
>                 URL: http://issues.apache.org/jira/browse/DERBY-1700
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Daniel John Debrunner
>         Assigned To: Daniel John Debrunner
>            Priority: Minor
>             Fix For: 10.2.1.0, 10.3.0.0
>
>         Attachments: derby1700_diff_p1.txt, derby1700_diff_p2.txt, derby1700_diff_p3.txt
>
>
> A UNION node will generate byte code to call this method:
> NoPutResultSet getUnionResultSet(NoPutResultSet source1,
> NoPutResultSet source2,
> Activation activation,
> int resultSetNumber,
> double optimizerEstimatedRowCount,
> double optimizerEstimatedCost,
> GeneratedMethod closeCleanup)
> The closeCleanup method is passed in as null for all result sets in a tree except the
top one. Instead of passing it on each new result set, it would be much more efficient to
have a setCloseMethod() that is only called once for the top result set.  Could also look
at having an closeCleanup method in the interface and call it directly, rather than through
reflection.
> This applies to any node that takes a closeCleanup method.
> Split out from DERBY-766

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