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Posted to derby-dev@db.apache.org by "Kristian Waagan (JIRA)" <de...@db.apache.org> on 2006/07/17 13:41:15 UTC
[jira] Closed: (DERBY-609) Returning ByteArrayInputStream from
ResultSet is not appropriate
[ http://issues.apache.org/jira/browse/DERBY-609?page=all ]
Kristian Waagan closed DERBY-609.
---------------------------------
Fix Version/s: 10.1.2.1
Resolution: Fixed
Closing this, seems completed. No activity since October 2005.
> Returning ByteArrayInputStream from ResultSet is not appropriate
> ----------------------------------------------------------------
>
> Key: DERBY-609
> URL: http://issues.apache.org/jira/browse/DERBY-609
> Project: Derby
> Issue Type: Bug
> Components: Network Client
> Reporter: Tomohito Nakayama
> Assigned To: Tomohito Nakayama
> Fix For: 10.1.2.1
>
> Attachments: DERBY-609.patch
>
>
> Point where it is not appropriate :
> 1: Compatibility
> The InputStream returned from result set is closed when other getXXXX method was called .
> http://java.sun.com/j2se/1.5.0/docs/api/java/sql/ResultSet.html
> However closing ByteArrayInputStream have no effect at all .
> http://java.sun.com/j2se/1.5.0/docs/api/java/io/ByteArrayInputStream.html#close()
> It seems intended that closable InputStream was returned from result set .
> If ByteArrayInputStream was returned from result set , the stream cannot be closed,
> and compatibility would be lost .
> 2: Performance of program
> Information inputted from ByteArrayInputStream needs to be expanded to memory as byte[] object .
> If large byte[] object was created for each ByteArrayInputStream object ,
> program will run in bad performance .
> // I think problem is when information typed as LOB was retrieved from ResultSet .
> // Because such informations typed as LOB tend to be large amount .
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