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Date: Sat, 28 Mar 2009 14:40:50 -0700 (PDT)
From: "Kristian Waagan (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-4122) ClassCastException in SQLClob when
 running in soft upgrade mode (10.4.2.0 -> 10.5.1.0)
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    [ https://issues.apache.org/jira/browse/DERBY-4122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12693495#action_12693495 ] 

Kristian Waagan commented on DERBY-4122:
----------------------------------------

derbyall and suites.All ran without failures (with freshly created test databases, not in soft upgrade mode).

> ClassCastException in SQLClob when running in soft upgrade mode (10.4.2.0 -> 10.5.1.0)
> --------------------------------------------------------------------------------------
>
>                 Key: DERBY-4122
>                 URL: https://issues.apache.org/jira/browse/DERBY-4122
>             Project: Derby
>          Issue Type: Bug
>          Components: Regression Test Failure
>    Affects Versions: 10.5.1.0
>         Environment: Windows Vista 64, Sun JDK 1.6.0_10, Junit 3.8.2
>            Reporter: Suran Jayathilaka
>            Assignee: Kristian Waagan
>            Priority: Blocker
>         Attachments: derby-4122-1a-incorrect_stream_positioning.diff, derby-4122-2a-bc4btest.diff, derby-4122-3a-classcast_fix.diff
>
>
> This bug was found when doing soft upgrade testing from Derby version 10.4.2.0 to 10.5.1.0 (RC1)
> Steps followed are as follows.
> 1. Run setEmbeddedCP.bat from version 10.4.2.0's bin folder
> 2. In a test folder run ij
> 3. create system/wombat database.
>     ij> connect 'jdbc:derby:system/wombat;create=true';
> 4. exit ij
> 5. Copy the 10.5.1.0 derby jars (from lib folder) and the derbyTesting.jar from 10.4.2.0 to the test folder and set classpath with them (including junit and ORO)
> 6. Run suites.All 
>      java -Xmx512M -Xms512M -Dderby.tests.trace=true junit.textui.TestRunner org.apache.derbyTesting.functionTests.suites.All
> Result:
> Tests run: 10479,  Failures: 56,  Errors: 34
> The exception stack trace from a failed test follows.
> -------------------------------------------------------------------------------------------------------------
> 3) testClobInTriggerTable(org.apache.derbyTesting.functionTests.tests.lang.TriggerTest)java.sql.SQLException: Java exception: 'org.apache.derby.iapi.types.ReaderToUTF8Stream cannot be cast to org.apache.derby.iapi.types.Resetable: java.lang.ClassCastException'.
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.Util.javaException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.execute(Unknown Source)
> 	at org.apache.derbyTesting.functionTests.tests.lang.TriggerTest.testClobInTriggerTable(TriggerTest.java:529)
> 	at org.apache.derbyTesting.functionTests.tests.lang.TriggerTest.testClobInTriggerTable(TriggerTest.java:451)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:102)
> 	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
> 	at junit.extensions.TestSetup$1.protect(TestSetup.java:21)
> 	at junit.extensions.TestSetup.run(TestSetup.java:25)
> 	at org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:57)
> Caused by: java.sql.SQLException: Java exception: 'org.apache.derby.iapi.types.ReaderToUTF8Stream cannot be cast to org.apache.derby.iapi.types.Resetable: java.lang.ClassCastException'.
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown Source)
> 	... 39 more
> Caused by: java.lang.ClassCastException: org.apache.derby.iapi.types.ReaderToUTF8Stream cannot be cast to org.apache.derby.iapi.types.Resetable
> 	at org.apache.derby.iapi.types.SQLClob.rewindStream(Unknown Source)
> 	at org.apache.derby.iapi.types.SQLClob.readExternal(Unknown Source)
> 	at org.apache.derby.iapi.types.SQLChar.getString(Unknown Source)
> 	at org.apache.derby.iapi.types.SQLChar.loadStream(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.UpdateResultSet.objectifyStream(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.UpdateResultSet.collectAffectedRows(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.UpdateResultSet.open(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
> 	... 32 more
> ------------------------------------------------------------------------------------------------------------------
> When looking at the SVN revisions for SQLClob with Kathey Marsden, we found the following statement in revision # 738408, related to DERBY-3907, which might be related to this issue.
> "NOTE: Databases created with this revision (or later) containing Clobs, cannot be accessed by earlier trunk revisions."
> Patch file: derby-3907-7a3-use_new_header_format.diff
>       

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