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From "Rick Hillegas (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-1583) With grant revoke enabled, defining a trigger whose actions updates a table (from different schema) results in NPE
Date Thu, 27 Jul 2006 21:23:14 GMT
     [ http://issues.apache.org/jira/browse/DERBY-1583?page=all ]

Rick Hillegas updated DERBY-1583:
---------------------------------

    Urgency: Normal

Assigning normal priority.

> With grant revoke enabled, defining a trigger whose actions updates a table (from different
schema) results in NPE
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-1583
>                 URL: http://issues.apache.org/jira/browse/DERBY-1583
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.2.0.0
>            Reporter: Mamta A. Satoor
>             Fix For: 10.2.0.0
>
>
> While working on SQL authorization work, I ran across a test case where Derby will throw
a NPE when a trigger is defined with it's action as update a table from another schema. I
don't have much details on why but following is the test case. Derby is trying to put privilege
requirement for a column into privilege requirements list and it expects the column's tableUUID
to be not null but in this particular case, it is null.
> connect 'jdbc:derby:c:/dellater/dbmain;create=true' user 'mamta1' as mamta1;
> create table t11TriggerRevokeTest (c111 int not null primary key, c12 int);
> grant TRIGGER on t11TriggerRevokeTest to mamta2;
> create table t12TriggerRevokeTest (c121 int, c122 int, c123 int); 
> grant UPDATE(c122, c121) on t12TriggerRevokeTest to mamta2;
> connect 'jdbc:derby:c:/dellater/dbmain;create=true' user 'mamta2' as mamta2;
> create trigger tr11t11 after insert on mamta1.t11TriggerRevokeTest for each statement
mode db2sql
>         update mamta1.t12TriggerRevokeTest set c122 = 99;
> The stack trace looks as follows
> ij(MAMTA2)> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.java.lang.NullPointerException
>         at org.apache.derby.impl.sql.compile.CompilerContextImpl.addRequiredColumnPriv(CompilerContextImpl.java:741)
>         at org.apache.derby.impl.sql.compile.ResultColumn.bindResultColumnByName(ResultColumn.java:682)
>         at org.apache.derby.impl.sql.compile.ResultColumnList.bindResultColumnsByName(ResultColumnList.java:635)
>         at org.apache.derby.impl.sql.compile.ResultSetNode.bindResultColumns(ResultSetNode.java:682)
>         at org.apache.derby.impl.sql.compile.SelectNode.bindResultColumns(SelectNode.java:751)
>         at org.apache.derby.impl.sql.compile.UpdateNode.bind(UpdateNode.java:348)
>         at org.apache.derby.impl.sql.GenericStatement.prepMinion(GenericStatement.java:344)
>         at org.apache.derby.impl.sql.GenericStatement.prepareStorable(GenericStatement.java:591)
>         at org.apache.derby.iapi.sql.dictionary.SPSDescriptor.compileStatement(SPSDescriptor.java:353)
>         at org.apache.derby.iapi.sql.dictionary.SPSDescriptor.prepareAndRelease(SPSDescriptor.java:283)
>         at org.apache.derby.impl.sql.execute.CreateTriggerConstantAction.createSPS(CreateTriggerConstantAction.java:367)
>         at org.apache.derby.impl.sql.execute.CreateTriggerConstantAction.executeConstantAction(CreateTriggerConstantAction.java:272)
>         at org.apache.derby.impl.sql.execute.MiscResultSet.open(MiscResultSet.java:56)
>         at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:357)
>         at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1181)
>         at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:584)
>         at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:516)
>         at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:313)
>         at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:433)
>         at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:310)
>         at org.apache.derby.impl.tools.ij.Main.go(Main.java:207)
>         at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:173)
>         at org.apache.derby.impl.tools.ij.Main14.main(Main14.java:55)
>         at org.apache.derby.tools.ij.main(ij.java:60)

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