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From Øystein Grøvlen (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 07:47:05 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12474932

Øystein Grøvlen commented on DERBY-2347:

As far as I can see, the DRDA protocol does not provide any ways to request locators as part
of the OPNQRY.

Anyhow, the client will be made so that it also handles receiving LOBs when it had requested
locators.  Hence,  should pre-fetching include LOBs, which I do not think it does, it should
still work.

If LOBs where small, it would be desireable to allow prefetching.  However, if LOBs are small,
you ideally would want the LOB values, not locators.  Since the client will handle LOB values,
anyway, I have been thinking about sending values instead of locators if LOBs are small, but
I suspect that would be a violation of the DRDA protocol. 

> 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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