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From "Knut Anders Hatlen (JIRA)" <derby-...@db.apache.org>
Subject [jira] Resolved: (DERBY-1473) Add cut-off and truncation logic to streaming classes in the embedded driver
Date Sat, 26 Aug 2006 11:37:26 GMT
     [ http://issues.apache.org/jira/browse/DERBY-1473?page=all ]

Knut Anders Hatlen resolved DERBY-1473.
---------------------------------------

    Resolution: Fixed

Committed into 10.2 with revision 437146.

> Add cut-off and truncation logic to streaming classes in the embedded driver
> ----------------------------------------------------------------------------
>
>                 Key: DERBY-1473
>                 URL: http://issues.apache.org/jira/browse/DERBY-1473
>             Project: Derby
>          Issue Type: Improvement
>          Components: JDBC
>    Affects Versions: 10.2.1.0
>            Reporter: Kristian Waagan
>         Assigned To: Kristian Waagan
>             Fix For: 10.2.1.0
>
>         Attachments: derby-1473-1a-streaming.diff, derby-1473-1a-streaming.stat, derby-1473-1b-streaming.diff,
derby-1473-1c-streaming.diff, derby-1473-2a-streamingtests.diff, derby-1473-2a-streamingtests.stat,
derby-1473-2b-streamingtests.diff, derby-1473-2c-streamingtests.diff
>
>
> When streaming data to Derby, the application stream will be wrapped in a Derby-specific
stream to convert the data to the correct representation. At a minimum, this consists of getting
the data to the on-disk format used by Derby.
> The wrapping stream can be extended to provide the following features at an earlier stage:
>  a) Data cut-off when the maximum allowed size is exceeded
>  b) Truncation of trailing blanks where allowed
> Both features can reduce the amount of data needed to be kept in memory on insertion.
> Implementing this will require additional column/data type information in the streaming
class(es). The implementation must be able to handle streams for which the length is specified
and also streams with unknown/unspecified length.

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