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via hsqldb by marcwick
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java.lang.ClassCastException: java.lang.String	at org.hsqldb.rowio.RowOutputBase.writeData(RowOutputBase.java:276)	at org.hsqldb.rowio.RowOutputBase.writeData(RowOutputBase.java:188)	at org.hsqldb.scriptio.ScriptWriterText.writeRow(ScriptWriterText.java:126)	at org.hsqldb.Log.writeInsertStatement(Log.java:517)	at org.hsqldb.Logger.writeInsertStatement(Logger.java:218)	at org.hsqldb.Table.insertNoCheck(Table.java:1737)	at org.hsqldb.Table.insertRow(Table.java:1686)	at org.hsqldb.Table.insert(Table.java:1669)	at org.hsqldb.CompiledStatementExecutor.executeInsertValuesStatement(CompiledStatementExecutor.java:303)	at org.hsqldb.CompiledStatementExecutor.executeImpl(CompiledStatementExecutor.java:126)	at org.hsqldb.CompiledStatementExecutor.execute(CompiledStatementExecutor.java:89)	at org.hsqldb.Session.sqlExecuteCompiledNoPreChecks(Session.java:957)	at org.hsqldb.DatabaseCommandInterpreter.executePart(DatabaseCommandInterpreter.java:225)	at org.hsqldb.DatabaseCommandInterpreter.execute(DatabaseCommandInterpreter.java:164)	at org.hsqldb.Session.sqlExecuteDirectNoPreChecks(Session.java:952)	at org.hsqldb.Session.execute(Session.java:843)	at org.hsqldb.jdbc.jdbcStatement.fetchResult(jdbcStatement.java:1570)	at org.hsqldb.jdbc.jdbcStatement.executeUpdate(jdbcStatement.java:219)	at org.objectweb.cjdbc.controller.loadbalancer.AbstractLoadBalancer.executeUpdateRequestOnBackend(AbstractLoadBalancer.java:362)	at org.objectweb.cjdbc.controller.loadbalancer.tasks.WriteRequestTask.execute(WriteRequestTask.java:158)	at org.objectweb.cjdbc.controller.loadbalancer.BackendWorkerThread.run(BackendWorkerThread.java:409)