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Date: Thu, 7 Sep 2006 13:02:22 -0700 (PDT)
From: "Mamta A. Satoor (JIRA)" <derby-dev@db.apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-1589) CREATE TABLE throws
 NullPointerException in Derby SQL Standard Authorization after DROPs and
 REVOKES
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    [ http://issues.apache.org/jira/browse/DERBY-1589?page=comments#action_12433215 ] 
            
Mamta A. Satoor commented on DERBY-1589:
----------------------------------------

I noticed that the stack trace for null pointer exception was not included in this jira entry. So, I ran the following sql script using ij in the trunk
connect 'jdbc:derby:c:/dellater/dbmaintest2;create=true' user 'mamta1' as mamta1; 
create table t11ConstraintTest (c111 int not null, c112 int not null, primary key (c111, c112)); 
grant references on t11ConstraintTest to mamta3; 
connect 'jdbc:derby:c:/dellater/dbmaintest2;create=true' user 'mamta3' as mamta3; 
drop table t31ConstraintTest; 
create table t31ConstraintTest (c311 int, c312 int, foreign key(c311, c312) references mamta1.t11ConstraintTest); 
drop table t31ConstraintTest; 
set connection mamta1; 
drop table t11ConstraintTest; 
create table t11ConstraintTest (c111 int not null, c112 int not null, primary key (c111, c112)); 
grant references(c111) on t11ConstraintTest to mamta3; 
grant references(c112) on t11ConstraintTest to PUBLIC; 
set connection mamta3; 
drop table t31ConstraintTest; 
create table t31ConstraintTest (c311 int, c312 int, foreign key(c311, c312) references mamta1.t11ConstraintTest); 
 

And the last create table always gave null pointer exception. The stack trace looks as follows
        at org.apache.derby.iapi.sql.dictionary.TablePermsDescriptor.<init>(TablePermsDescriptor.java:70)
        at org.apache.derby.iapi.sql.dictionary.TablePermsDescriptor.<init>(TablePermsDescriptor.java:81)
        at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getTablePermissions(DataDictionaryImpl.java:9962)
        at org.apache.derby.iapi.sql.dictionary.StatementTablePermission.oneAuthHasPermissionOnTable(StatementTablePermission.java:148)
        at org.apache.derby.iapi.sql.dictionary.StatementTablePermission.hasPermissionOnTable(StatementTablePermission.java:141)
        at org.apache.derby.iapi.sql.dictionary.StatementColumnPermission.check(StatementColumnPermission.java:94)
        at org.apache.derby.impl.sql.conn.GenericAuthorizer.authorize(GenericAuthorizer.java:158)
        at org.apache.derby.impl.sql.execute.GenericResultSetFactory.getDDLResultSet(GenericResultSetFactory.java:1020)
        at org.apache.derby.impl.sql.execute.ConstantActionActivation.execute(ConstantActionActivation.java:54)
        at org.apache.derby.impl.sql.GenericActivationHolder.execute(GenericActivationHolder.java:327)
        at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:356)
        at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1182)
        at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:585)
        at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:517)
        at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:321)
        at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:517)
        at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:370)
        at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:268)
        at org.apache.derby.impl.tools.ij.Main.go(Main.java:204)
        at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:170)
        at org.apache.derby.impl.tools.ij.Main14.main(Main14.java:56)
        at org.apache.derby.tools.ij.main(ij.java:71)

> CREATE TABLE throws NullPointerException in Derby SQL Standard Authorization after DROPs and REVOKES
> ----------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-1589
>                 URL: http://issues.apache.org/jira/browse/DERBY-1589
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.2.1.0
>            Reporter: Daniel John Debrunner
>             Fix For: 10.2.1.0
>
>
> Currently, the last sql statement in following set of sql statements will raise a null pointer exception
> connect 'jdbc:derby:c:/dellater/dbmaintest2;create=true' user 'mamta1' as mamta1;
> create table t11ConstraintTest (c111 int not null, c112 int not null, primary key (c111, c112));
> grant references on t11ConstraintTest to mamta3;
> connect 'jdbc:derby:c:/dellater/dbmaintest2;create=true' user 'mamta3' as mamta3;
> drop table t31ConstraintTest;
> -- the following statement should remember that it depends on REFERENCES privilege on mamta1.t11ConstraintTest
> create table t31ConstraintTest (c311 int, c312 int, foreign key(c311, c312) references mamta1.t11ConstraintTest);
> drop table t31ConstraintTest;
> set connection mamta1;
> -- following should revoke all the privileges granted on it
> drop table t11ConstraintTest;
> create table t11ConstraintTest (c111 int not null, c112 int not null, primary key (c111, c112));
> grant references(c111) on t11ConstraintTest to mamta3;
> grant references(c112) on t11ConstraintTest to PUBLIC;
> --connect 'jdbc:derby:c:/dellater/dbmaintest2;create=true' user 'mamta3' as mamta3;
> set connection mamta3;
> drop table t31ConstraintTest;
> -- following sql should recompie itself because the earlier plan depended on a privilege which doesn't
> -- exist anymore. Instead, new privileges have been granted and the plan for following statement should depend
> -- on those new privileges
> create table t31ConstraintTest (c311 int, c312 int, foreign key(c311, c312) references mamta1.t11ConstraintTest); 

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