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Knut Anders Hatlen commented on DERBY-6663: ------------------------------------------- It looks like the writeExternal() and readExternal() methods of the FKInfo class don't store and restore the fkIds field. Even though the CREATE TRIGGER statement correctly sets the field to a non-null value at bind-time, that value is not preserved when the prepared plan is stored in the dictionary, and it's consequently null when the trigger later reads the plan from the dictionary and executes it. > NPE when a trigger tries to insert into a table with a foreign key > ------------------------------------------------------------------ > > Key: DERBY-6663 > URL: https://issues.apache.org/jira/browse/DERBY-6663 > Project: Derby > Issue Type: Bug > Components: SQL > Affects Versions: 10.11.0.0 > Reporter: Rick Hillegas > > The following script shows this problem. This is a regression. It does not > occur on 10.10.1.1 or 10.10.2.0: > {noformat} > connect 'jdbc:derby:memory:db;create=true'; > create table tprim1 > ( > keyCol int not null, > constraint tprim1 primary key( keyCol ) > ); > create table tref > ( > refCol int, > constraint tref foreign key( refCol ) references tprim1( keyCol ) > ); > create table othertable( a int ); > create trigger inserttrig after insert on othertable > referencing new as new > for each row > insert into tref values ( new.a ); > -- causes an NPE > insert into othertable values ( 1 ); > {noformat} > Here is the stack trace: > {noformat} > Mon Jul 14 12:12:34 PDT 2014 Thread[main,5,main] (XID = 197), (SESSIONID = > 1), (DATABASE = memory:db), (DRDAID = null), Failed Statement is: insert into > "APP"."TREF" values ( CAST > (org.apache.derby.iapi.db.Factory::getTriggerExecutionContext().getNewRow().getObject(1) > AS INTEGER) ) > java.lang.NullPointerException > at > org.apache.derby.impl.sql.execute.ForeignKeyRIChecker.doCheck(ForeignKeyRIChecker.java:111) > at > org.apache.derby.impl.sql.execute.RISetChecker.doFKCheck(RISetChecker.java:161) > at > org.apache.derby.impl.sql.execute.InsertResultSet.normalInsertCore(InsertResultSet.java:1088) > at > org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:504) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:470) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeSubStatement(GenericPreparedStatement.java:336) > at > org.apache.derby.impl.sql.execute.GenericTriggerExecutor.executeSPS(GenericTriggerExecutor.java:216) > at > org.apache.derby.impl.sql.execute.GenericTriggerExecutor.executeWhenClauseAndAction(GenericTriggerExecutor.java:346) > at > org.apache.derby.impl.sql.execute.RowTriggerExecutor.fireTrigger(RowTriggerExecutor.java:113) > at > org.apache.derby.impl.sql.execute.TriggerEventActivator.notifyEvent(TriggerEventActivator.java:272) > at > org.apache.derby.impl.sql.execute.InsertResultSet.normalInsertCore(InsertResultSet.java:1278) > at > org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:504) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:470) > at > org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:349) > at > org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1338) > at > org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:704) > at > org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:631) > at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:367) > at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:529) > at > org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:371) > at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:247) > at org.apache.derby.impl.tools.ij.Main.go(Main.java:229) > at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:184) > at org.apache.derby.impl.tools.ij.Main.main(Main.java:75) > at org.apache.derby.tools.ij.main(ij.java:59) > Cleanup action completed > Mon Jul 14 12:12:34 PDT 2014 Thread[main,5,main] > ERROR XJ001: Java exception: ': java.lang.NullPointerException'. > java.sql.SQLException: Java exception: ': java.lang.NullPointerException'. > at > org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:107) > at > org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:133) > at org.apache.derby.impl.jdbc.Util.seeNextException(Util.java:255) > at org.apache.derby.impl.jdbc.Util.javaException(Util.java:277) > at > org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:437) > at > org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(TransactionResourceImpl.java:353) > at > org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedConnection.java:2396) > at > org.apache.derby.impl.jdbc.ConnectionChild.handleException(ConnectionChild.java:82) > at > org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1430) > at > org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:704) > at > org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:631) > at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:367) > at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:529) > at > org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:371) > at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:247) > at org.apache.derby.impl.tools.ij.Main.go(Main.java:229) > at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:184) > at org.apache.derby.impl.tools.ij.Main.main(Main.java:75) > at org.apache.derby.tools.ij.main(ij.java:59) > Caused by: ERROR XJ001: Java exception: ': java.lang.NullPointerException'. > at > org.apache.derby.iapi.error.StandardException.newException(StandardException.java:290) > at > org.apache.derby.impl.jdbc.SQLExceptionFactory.wrapArgsForTransportAcrossDRDA(SQLExceptionFactory.java:162) > at > org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:74) > ... 18 more > Caused by: java.lang.NullPointerException > at > org.apache.derby.impl.sql.execute.ForeignKeyRIChecker.doCheck(ForeignKeyRIChecker.java:111) > at > org.apache.derby.impl.sql.execute.RISetChecker.doFKCheck(RISetChecker.java:161) > at > org.apache.derby.impl.sql.execute.InsertResultSet.normalInsertCore(InsertResultSet.java:1088) > at > org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:504) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:470) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeSubStatement(GenericPreparedStatement.java:336) > at > org.apache.derby.impl.sql.execute.GenericTriggerExecutor.executeSPS(GenericTriggerExecutor.java:216) > at > org.apache.derby.impl.sql.execute.GenericTriggerExecutor.executeWhenClauseAndAction(GenericTriggerExecutor.java:346) > at > org.apache.derby.impl.sql.execute.RowTriggerExecutor.fireTrigger(RowTriggerExecutor.java:113) > at > org.apache.derby.impl.sql.execute.TriggerEventActivator.notifyEvent(TriggerEventActivator.java:272) > at > org.apache.derby.impl.sql.execute.InsertResultSet.normalInsertCore(InsertResultSet.java:1278) > at > org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:504) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:470) > at > org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:349) > at > org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1338) > ... 10 more > ============= begin nested exception, level (1) =========== > ERROR XJ001: Java exception: ': java.lang.NullPointerException'. > at > org.apache.derby.iapi.error.StandardException.newException(StandardException.java:290) > at > org.apache.derby.impl.jdbc.SQLExceptionFactory.wrapArgsForTransportAcrossDRDA(SQLExceptionFactory.java:162) > at > org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:74) > at > org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:133) > at org.apache.derby.impl.jdbc.Util.seeNextException(Util.java:255) > at org.apache.derby.impl.jdbc.Util.javaException(Util.java:277) > at > org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:437) > at > org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(TransactionResourceImpl.java:353) > at > org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedConnection.java:2396) > at > org.apache.derby.impl.jdbc.ConnectionChild.handleException(ConnectionChild.java:82) > at > org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1430) > at > org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:704) > at > org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:631) > at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:367) > at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:529) > at > org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:371) > at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:247) > at org.apache.derby.impl.tools.ij.Main.go(Main.java:229) > at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:184) > at org.apache.derby.impl.tools.ij.Main.main(Main.java:75) > at org.apache.derby.tools.ij.main(ij.java:59) > Caused by: java.lang.NullPointerException > at > org.apache.derby.impl.sql.execute.ForeignKeyRIChecker.doCheck(ForeignKeyRIChecker.java:111) > at > org.apache.derby.impl.sql.execute.RISetChecker.doFKCheck(RISetChecker.java:161) > at > org.apache.derby.impl.sql.execute.InsertResultSet.normalInsertCore(InsertResultSet.java:1088) > at > org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:504) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:470) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeSubStatement(GenericPreparedStatement.java:336) > at > org.apache.derby.impl.sql.execute.GenericTriggerExecutor.executeSPS(GenericTriggerExecutor.java:216) > at > org.apache.derby.impl.sql.execute.GenericTriggerExecutor.executeWhenClauseAndAction(GenericTriggerExecutor.java:346) > at > org.apache.derby.impl.sql.execute.RowTriggerExecutor.fireTrigger(RowTriggerExecutor.java:113) > at > org.apache.derby.impl.sql.execute.TriggerEventActivator.notifyEvent(TriggerEventActivator.java:272) > at > org.apache.derby.impl.sql.execute.InsertResultSet.normalInsertCore(InsertResultSet.java:1278) > at > org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:504) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:470) > at > org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:349) > at > org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1338) > ... 10 more > ============= end nested exception, level (1) =========== > ============= begin nested exception, level (2) =========== > java.lang.NullPointerException > at > org.apache.derby.impl.sql.execute.ForeignKeyRIChecker.doCheck(ForeignKeyRIChecker.java:111) > at > org.apache.derby.impl.sql.execute.RISetChecker.doFKCheck(RISetChecker.java:161) > at > org.apache.derby.impl.sql.execute.InsertResultSet.normalInsertCore(InsertResultSet.java:1088) > at > org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:504) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:470) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeSubStatement(GenericPreparedStatement.java:336) > at > org.apache.derby.impl.sql.execute.GenericTriggerExecutor.executeSPS(GenericTriggerExecutor.java:216) > at > org.apache.derby.impl.sql.execute.GenericTriggerExecutor.executeWhenClauseAndAction(GenericTriggerExecutor.java:346) > at > org.apache.derby.impl.sql.execute.RowTriggerExecutor.fireTrigger(RowTriggerExecutor.java:113) > at > org.apache.derby.impl.sql.execute.TriggerEventActivator.notifyEvent(TriggerEventActivator.java:272) > at > org.apache.derby.impl.sql.execute.InsertResultSet.normalInsertCore(InsertResultSet.java:1278) > at > org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:504) > at > org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:470) > at > org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:349) > at > org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1338) > at > org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:704) > at > org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:631) > at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:367) > at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:529) > at > org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:371) > at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:247) > at org.apache.derby.impl.tools.ij.Main.go(Main.java:229) > at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:184) > at org.apache.derby.impl.tools.ij.Main.main(Main.java:75) > at org.apache.derby.tools.ij.main(ij.java:59) > {noformat} -- This message was sent by Atlassian JIRA (v6.2#6252)