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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2806) calling getByteLength on org.apache.derby.impl.jdbc.StoreStreamClob makes BinaryStream, fetched before this call, unusable
Date Thu, 14 Jun 2007 21:46:26 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12504934
] 

Kristian Waagan commented on DERBY-2806:
----------------------------------------

I wasn't able to get the repro to fail, and it was a bit hard to understand from the output
if it did fail or not.
Maybe some other patch has changed the behavior.
In my next patch I will add a new test called ClobUpdateableReader.testMultiplexedOperationProblem,
which does still fail without the patch. It only tests if Clob experiences the bug.

> calling getByteLength on org.apache.derby.impl.jdbc.StoreStreamClob makes BinaryStream,
fetched before this call, unusable
> --------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-2806
>                 URL: https://issues.apache.org/jira/browse/DERBY-2806
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.2.2.0, 10.3.0.0
>            Reporter: Anurag Shekhar
>            Assignee: Kristian Waagan
>             Fix For: 10.3.0.0
>
>         Attachments: derby-2806-1a.diff, Derby2806.java
>
>
> StoreStreamClob.getByteLength first resets the internal stream and then reads the entire
stream. Due to this any read on Stream obtained by StoreStreamClob.getRawByteStream returns
-1.
> StoreStreamClob is a read only InternalClob, so probably keeping the length in a variable
will be good idea.

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