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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-3907) Save useful length information for Clobs in store
Date Tue, 13 Jan 2009 08:02:59 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Kristian Waagan updated DERBY-3907:

       Derby Info:   (was: [Patch Available])
    Fix Version/s:

Committed patch 2c to trunk with revision 734065.

> Save useful length information for Clobs in store
> -------------------------------------------------
>                 Key: DERBY-3907
>                 URL: https://issues.apache.org/jira/browse/DERBY-3907
>             Project: Derby
>          Issue Type: Improvement
>          Components: JDBC, Store
>    Affects Versions:
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>             Fix For:
>         Attachments: derby-3907-1a-alternative_approach.diff, derby-3907-2b-header_write_preparation.diff,
derby-3907-2b-header_write_preparation.diff, derby-3907-2b-header_write_preparation.stat,
derby-3907-2c-header_write_preparation-PREVIEW.diff, derby-3907-2c-header_write_preparation-PREVIEW.stat,
derby-3907-2c-header_write_preparation.diff, derby-3907-2c-header_write_preparation.diff,
derby-3907-2c-header_write_preparation.stat, derby-3907-3a-readertoutf8stream_cleanup.diff,
derby-3907-3a-readertoutf8stream_cleanup.diff, derby-3907-3a-readertoutf8stream_cleanup.stat,
> The store should save useful length information for Clobs. This allows the length to
be found without decoding the whole data stream.
> The following thread raised the issue on what information to store, and also contains
some background information: http://www.nabble.com/Storing-length-information-for-CLOB-on-disk-tp19197535p19197535.html
> The information to store, and the exact format of it, is still to be discussed/determined.
> Currently two bytes are set aside for length information, which is inadequate.

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