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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-6214) PreparedStatement.setObject(int, Object, Types.CLOB) fail with DerbyNet
Date Mon, 06 May 2013 19:06:16 GMT

     [ https://issues.apache.org/jira/browse/DERBY-6214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kathey Marsden updated DERBY-6214:
----------------------------------

            Priority: Major  (was: Critical)
    Issue & fix info: Repro attached,Workaround attached

According to this reference chart 8.9.5, I was surprised to find that  setObject of a String
to a Clob is not marked as something that should work.
http://docs.oracle.com/javase/6/docs/technotes/guides/jdbc/getstart/mapping.html

We do have a history of it working in some contexts so it seems to make sense to fix this
case to work the same way, but makes sense to bring down the priority especially since there
is a work around. I am done with the work I plan to do on this issue.

                
> PreparedStatement.setObject(int, Object, Types.CLOB) fail with DerbyNet
> -----------------------------------------------------------------------
>
>                 Key: DERBY-6214
>                 URL: https://issues.apache.org/jira/browse/DERBY-6214
>             Project: Derby
>          Issue Type: Bug
>    Affects Versions: 10.8.3.0, 10.9.1.0
>            Reporter: Rong Qu
>         Attachments: Derby6214.java, Derby6214_setup.sql, derby.log, DerbyNet_client_test.sql
>
>
> The issue is specific to the DerbyNet client driver, and doesn't seem to occur using
embedded Derby.
>  "PreparedStatement.setObject(int, Object, Types.CLOB)". It seems to be a problem updating
a CLOB column with a parameterized value using the DerbyNet client driver, and if the update
SQL ends up updating more than one row. I attached a simple test case that just uses JDBC
to reproduce the error. The exception looks like this:
> org.apache.derby.client.am.BatchUpdateException: Non-atomic batch failure.  The batch
was submitted, but at least one exception occurred on an individual member of the batch. Use
getNextException() to retrieve the exceptions for specific batched elements.
>     at org.apache.derby.client.am.Agent.endBatchedReadChain(Unknown Source)
>     at org.apache.derby.client.am.PreparedStatement.executeBatchRequestX(Unknown Source)
>     at org.apache.derby.client.am.PreparedStatement.executeBatchX(Unknown Source)
>     at org.apache.derby.client.am.PreparedStatement.executeBatch(Unknown Source)
>     ...
> Caused by: org.apache.derby.client.am.SqlException: Error for batch element #0: An unexpected
exception was thrown
>     at org.apache.derby.client.am.Statement.completeExecute(Unknown Source)
>     at org.apache.derby.client.net.NetStatementReply.parseEXCSQLSTTreply(Unknown Source)
>     at org.apache.derby.client.net.NetStatementReply.readExecute(Unknown Source)
>     at org.apache.derby.client.net.StatementReply.readExecute(Unknown Source)
>     at org.apache.derby.client.net.NetPreparedStatement.readExecute_(Unknown Source)
>     at org.apache.derby.client.am.PreparedStatement.readExecute(Unknown Source)
>     ... 4 more
> Caused by: org.apache.derby.client.am.SqlException: Error for batch element #0: Java
exception: 'Stream has already been read and end-of-file reached and cannot be re-used.: java.io.EOFException'.
>     at org.apache.derby.client.am.SqlException.<init>(Unknown Source)
>     at org.apache.derby.client.am.SqlException.<init>(Unknown Source)
>     ... 10 more

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