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From Øystein Grøvlen (JIRA) <j...@apache.org>
Subject [jira] Updated: (DERBY-2496) Implement Blob support for Locators
Date Thu, 03 May 2007 12:29:15 GMT

     [ https://issues.apache.org/jira/browse/DERBY-2496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Øystein Grøvlen updated DERBY-2496:
-----------------------------------

    Attachment: blob-followup_v2.diff

> Rick Hillegas commented on DERBY-2496:
> --------------------------------------
> 
> Thanks for the changes, Øystein. I am afraid I'm having some
> trouble applying blob-followup.diff. My patch tool could not apply
> the changes in BlobLocatorInputStream. So I tried applying them by
> hand. I ended up with compile errors in Blob.java because:

Sorry about that.  I do not understand how I got that to compile.  I
have attached a new version of the patch, blob-followup_v2.diff where
I make sure to catch the SqlException.  I also updated my sandbox, so
hopefully you will be able to apply this version.


> Implement Blob support for Locators
> -----------------------------------
>
>                 Key: DERBY-2496
>                 URL: https://issues.apache.org/jira/browse/DERBY-2496
>             Project: Derby
>          Issue Type: Sub-task
>            Reporter: Øystein Grøvlen
>         Assigned To: Øystein Grøvlen
>         Attachments: blob-followup.diff, blob-followup_v2.diff, blob.diff, blob_v2.diff
>
>
> DERBY-2347 adds the possibility to send locators between client and server instead of
LOB values.  This has not been activated yet, since the client implementation does not currently
support locators.  This report is for supporting the locators for Blob objects.  Another JIRA
issue will be made for Clob.
> This work will be made in several steps:
>    1. Blob methods and ResultSet.getXXX methods
>    2. PreparedStatement and CallableStatement methods
>    3. ResultSet.updateXXX methods
>    4. Connection.createBlob()
> There is dependencies between these steps and it might be that the Locator implementation
cannot be exposed until everything has been done.  At least, doing just step 1, gives testing
errors because tests use Blobs fetched from DB as parameters to prepared statements.   I would
guess tests for updatable result sets, needs the combination of 1. and 3.

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