[
http://issues.apache.org/jira/browse/DERBY-1292?page=comments#action_12378169 ]
Bryan Pendleton commented on DERBY-1292:
----------------------------------------
I was successfully able to reproduce your ClassCastException on the current
trunk. Here's the stack trace from the current trunk, with line numbers:
java.lang.ClassCastException
at
org.apache.derby.client.net.NetStatementRequest.computeProtocolTypesAndLengths(NetStatementRequest.java:1204)
at
org.apache.derby.client.net.NetStatementRequest.buildSQLDTAcommandData(NetStatementRequest.java:518)
at
org.apache.derby.client.net.NetStatementRequest.writeExecute(NetStatementRequest.java:137)
at
org.apache.derby.client.net.NetPreparedStatement.writeExecute_(NetPreparedStatement.java:172)
at
org.apache.derby.client.am.PreparedStatement.writeExecute(PreparedStatement.java:1403)
at
org.apache.derby.client.am.PreparedStatement.executeBatchRequestX(PreparedStatement.java:1879)
at
org.apache.derby.client.am.PreparedStatement.executeBatchX(PreparedStatement.java:1798)
at
org.apache.derby.client.am.PreparedStatement.executeBatch(PreparedStatement.java:1256)
at repro.doInserts(repro.java:74)
at repro.main(repro.java:28)
Line 1204 of NetStatementRequest.java is this:
java.sql.Clob c = (java.sql.Clob) inputRow[i];
Interestingly, I have to have *both* of the batch elements to make the bug
happen. If I comment out either
the first group of 3 lines in the doInserts() try block, or if I comment out
the second group of lines in the
doInserts() try block, the bug does not occur. It only occurs when *both* batch
elements are present in
the batch.
> ClassCastException in ClientDriver when using CLOB columns and batch updates
> ----------------------------------------------------------------------------
>
> Key: DERBY-1292
> URL: http://issues.apache.org/jira/browse/DERBY-1292
> Project: Derby
> Type: Bug
> Versions: 10.1.2.1
> Reporter: Gerald Khin
>
> java.lang.ClassCastException: java.lang.String
> at
> org.apache.derby.client.net.NetStatementRequest.computeProtocolTypesAndLengths(Unknown
> Source)
> at
> org.apache.derby.client.net.NetStatementRequest.buildSQLDTAcommandData(Unknown
> Source)
> at org.apache.derby.client.net.NetStatementRequest.writeExecute(Unknown
> Source)
> at
> org.apache.derby.client.net.NetPreparedStatement.writeExecute_(Unknown Source)
> at org.apache.derby.client.am.PreparedStatement.writeExecute(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)
> at CCEBatchUpdateRepro.doInserts(CCEBatchUpdateRepro.java:71)
> at CCEBatchUpdateRepro.main(CCEBatchUpdateRepro.java:27)
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