db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Daniel John Debrunner (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-2139) executing getXXX() for a column checks the column position is in range three times, reduce to one.
Date Sat, 02 Dec 2006 19:08:21 GMT
executing getXXX() for a column checks the column position is in range three times, reduce
to one.
--------------------------------------------------------------------------------------------------

                 Key: DERBY-2139
                 URL: http://issues.apache.org/jira/browse/DERBY-2139
             Project: Derby
          Issue Type: Improvement
          Components: JDBC, Performance, SQL
            Reporter: Daniel John Debrunner
            Priority: Minor


On a getXXX() method the column position is checked in:

Once in EmbedResultSet.getColumn()

Twice in ValueRow.getColumn()
  - once using explict code
  - once implicitly when accessing the DataValueDescriptor array

Can reduce to once by solely relying on the array bounds checking. Then change the defined
api to Row.getColumn to state that it throws IndexOutOfBoundsException for an invalid column.
EmbedResultSet.getColumn() then can catch that exception and throw the required SQLException.

Probably need similar changes on the setXXX() methods and other getXXX methods and need to
see how Row.getColumn() is used within the language layer.
   

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message