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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2347) Add code to support request and return of locators over DRDA
Date Thu, 22 Feb 2007 07:30:05 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12474930

Knut Anders Hatlen commented on DERBY-2347:

I don't think the DRDA protocol allows pre-fetching when the result contains LOBs. I haven't
checked what the spec says, but I found these comments in DRDAConnThread:

							if (stmt.getQryprctyp() == CodePoint.LMTBLKPRC &&
									stmt.getQryrowset() != 0) {
								// The DRDA spec allows us to send
								// QRYDTA here if there are no LOB
								// columns.

			/* Currently, if LMTBLKPRC is used, a pre-condition is that no lob columns.
			 * But in the future, when we do support LOB in LMTBLKPRC, the drda spec still
			 * does not allow LOB to be sent with OPNQRYRM.  So this "if" here will have
			 * to add "no lob columns".
			if (stmt.getQryprctyp() == CodePoint.LMTBLKPRC)

> Add code to support request and return of locators over DRDA
> ------------------------------------------------------------
>                 Key: DERBY-2347
>                 URL: https://issues.apache.org/jira/browse/DERBY-2347
>             Project: Derby
>          Issue Type: Sub-task
>          Components: Network Client, Network Server
>            Reporter: Øystein Grøvlen
>         Assigned To: Øystein Grøvlen
>         Attachments: DERBY-2347-v1.diff, DERBY-2347.diff
> - Make the client able to send DRDA OUTOVR commands to request locators from 
>   Network Server.
> - Make the network server send locators instead of LOB values if locators has been 
>   requested.
> This JIRA will not activate the code that request locators since the client is not yet
able to handle locators. 

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