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From "Tiago R. Espinha (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4198) When using the FOR UPDATE OF clause, the updateRow() method crashes
Date Wed, 29 Apr 2009 15:01:31 GMT
When using the FOR UPDATE OF clause, the updateRow() method crashes
-------------------------------------------------------------------

                 Key: DERBY-4198
                 URL: https://issues.apache.org/jira/browse/DERBY-4198
             Project: Derby
          Issue Type: Bug
          Components: JDBC, Network Client
    Affects Versions: 10.6.0.0
            Reporter: Tiago R. Espinha


This problem occurs on both Client/Server and Embedded.

With the Embedded driver, the JVM crashes with the following error:
-------------------------------------8<------------------------------------
1) testReproduction(org.apache.derbyTesting.functionTests.tests.store.ReproHoldCursorBug)org.apache.derby.shared.common.sanity.AssertFailure:
ASSERT FAILED statementContext is not expected to equal statementContexts[0]
	at org.apache.derby.shared.common.sanity.SanityManager.ASSERT(SanityManager.java:120)
	at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.popStatementContext(GenericLanguageConnectionContext.java:2286)
	at org.apache.derby.impl.jdbc.EmbedResultSet.updateRow(EmbedResultSet.java:3740)
	at org.apache.derbyTesting.functionTests.tests.store.ReproHoldCursorBug.testReproduction(ReproHoldCursorBug.java:71)
	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:105)
	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)
------------------------------------8<---------------------------------------------
(It shows a stack trace after this, but I'm attaching the result folders since those are more
thorough.)[1]

On the client driver, the JVM does not crash but it also errors out:
1) testReproduction(org.apache.derbyTesting.functionTests.tests.store.ReproHoldCursorBug)java.sql.SQLException:
DERBY SQL error: SQLCODE: -1, SQLSTATE: XJ001, SQLERRMC: java.lang.NullPointerExceptionXJ001.U
(more detail on the log files)[2]

The error does not show as long as the "OF DATA" isn't specified. It also won't show if the
whole FOR UPDATE clause is omitted.

I would also like some comments and advice on how to proceed on converting holdCursorJDBC30.sql
as it is affected by this problem. The original test does an update on a cursor with the "FOR
UPDATE OF DATA" clause, and this isn't working on the Java version of the test. Do I go around
it by removing the FOR UPDATE clause or should I wait for this bug to get fixed?

Attachments:
[1] - ErrorOutput_Embedded.tar.gz - Error output files of the Embedded run
[2] - ErrorOutput_Client.tar.gz - Error output files of the Client/Server run
[3] - ReproHoldCursorBug.java - The reproduction of the errors

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