[jira] Resolved: (DERBY-3964) NullPointerException when re-evaluating generated column during ON DELETE SET NULL referential action

["Rick Hillegas (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-3964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rick Hillegas resolved DERBY-3964.
----------------------------------

    Resolution: Fixed

> NullPointerException when re-evaluating generated column during ON DELETE SET NULL referential action
> -----------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3964
>                 URL: https://issues.apache.org/jira/browse/DERBY-3964
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Dag H. Wanvik
>            Assignee: Rick Hillegas
>         Attachments: derby-3964-01-aa-onDeleteSetNull.diff, RegenerateAfterOnDeleteSetNullError.java
>
>
> Cf repro RegenerateAfterOnDeleteSetNullError.java enclosed.
> 1) test_1(org.apache.derbyTesting.functionTests.tests.lang.RegenerateAfterOnDeleteSetNullError)java.sql.SQLException: The exception 'java.lang.NullPointerException' was thrown while evaluating an expression.
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:95)
> 	at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Util.java:87)
> 	at org.apache.derby.impl.jdbc.Util.seeNextException(Util.java:223)
> 	at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:398)
> 	at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(TransactionResourceImpl.java:346)
> 	at org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedConnection.java:2201)
> 	at org.apache.derby.impl.jdbc.ConnectionChild.handleException(ConnectionChild.java:81)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1323)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:625)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeUpdate(EmbedStatement.java:175)
> 	at org.apache.derbyTesting.functionTests.tests.lang.RegenerateAfterOnDeleteSetNullError.test_1(RegenerateAfterOnDeleteSetNullError.java:60)
> 	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)
> Caused by: java.sql.SQLException: The exception 'java.lang.NullPointerException' was thrown while evaluating an expression.
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:45)
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(SQLExceptionFactory40.java:119)
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:70)
> 	... 31 more
> Caused by: java.sql.SQLException: Java exception: ': java.lang.NullPointerException'.
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:45)
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(SQLExceptionFactory40.java:119)
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:70)
> 	at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Util.java:87)
> 	at org.apache.derby.impl.jdbc.Util.javaException(Util.java:244)
> 	at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:403)
> 	... 29 more
> Caused by: java.lang.NullPointerException
> 	at org.apache.derby.impl.sql.execute.BaseActivation.getColumnFromRow(BaseActivation.java:1451)
> 	at org.apache.derby.exe.ac30fbc0bbx011dxd4a8x4baexffffd28a99d54.e5(Unknown Source)
> 	at org.apache.derby.impl.services.reflect.DirectCall.invoke(ReflectGeneratedClass.java:149)
> 	at org.apache.derby.impl.sql.execute.NoRowsResultSetImpl.evaluateGenerationClauses(NoRowsResultSetImpl.java:623)
> 	at org.apache.derby.impl.sql.execute.UpdateResultSet.collectAffectedRows(UpdateResultSet.java:451)
> 	at org.apache.derby.impl.sql.execute.DeleteCascadeResultSet.collectAffectedRows(DeleteCascadeResultSet.java:195)
> 	at org.apache.derby.impl.sql.execute.DeleteCascadeResultSet.open(DeleteCascadeResultSet.java:120)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:416)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:297)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1235)
> 	... 24 more

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