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From "Knut Anders Hatlen (JIRA)" <derby-...@db.apache.org>
Subject [jira] Created: (DERBY-1225) Investigate how to avoid storing query options in both DRDAStatement and DRDAResultSet
Date Mon, 17 Apr 2006 22:11:17 GMT
Investigate how to avoid storing query options in both DRDAStatement and DRDAResultSet
--------------------------------------------------------------------------------------

         Key: DERBY-1225
         URL: http://issues.apache.org/jira/browse/DERBY-1225
     Project: Derby
        Type: Improvement

  Components: Network Server  
    Versions: 10.2.0.0    
    Reporter: Knut Anders Hatlen
    Priority: Minor


In the review of DERBY-822, it was commented that some configurable
options were stored in both DRDAStatement and DRDAResultSet when it
was enough to have one copy in DRDAResultSet.

>From DRDAStatement.java:

	// Query options  sent on EXCSQLSTT
	// These the default for ResultSets created for this statement.
	// These can be overriden by OPNQRY or CNTQRY,
	protected int nbrrow;			// number of fetch or insert rows
	protected int qryrowset;			// Query row set
	protected int blksize;				// Query block size
	protected int maxblkext;			// Maximum number of extra blocks
	protected int outovropt;			// Output Override option
	protected boolean qryrfrtbl;		// Query refresh answer set table
	private int qryprctyp = CodePoint.QRYBLKCTL_DEFAULT;   // Protocol type

All of these fields are also present in DRDAResultSet. The fields in
DRDAStatement are only used when DRDAStatement.execute() is
initializing its DRDAResultSets. Since DRDAStatement.execute() is
called right after the fields in DRDAStatement are set (either on an
OPNQRY or an EXCSQLSTT), it should be possible to pass the values
directly to the DRDAResultSet without having the fields duplicated in
DRDAStatement.

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