[ http://issues.apache.org/jira/browse/DERBY-1473?page=all ]
Knut Anders Hatlen updated DERBY-1473:
--------------------------------------
Derby Info: (was: [Patch Available])
I have committed 1c and 2c into trunk with revision 437127. The changes merged
cleanly into 10.2, and I plan to commit if derbyall doesn't fail.
> 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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