File: DeclareGlobalTempTableJavaJDBC30Test.java

package info (click to toggle)
derby 10.14.2.0-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 79,056 kB
  • sloc: java: 691,961; sql: 42,686; xml: 20,512; sh: 3,373; sed: 96; makefile: 60
file content (952 lines) | stat: -rw-r--r-- 46,189 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
/*

   Derby - Class org.apache.derbyTesting.functionTests.tests.lang.declareGlobalTempTableJavaJDBC30Test

   Licensed to the Apache Software Foundation (ASF) under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
   the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

 */

package org.apache.derbyTesting.functionTests.tests.lang;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Savepoint;
import java.sql.Statement;
import javax.sql.ConnectionPoolDataSource;
import javax.sql.PooledConnection;
import junit.framework.Test;
import org.apache.derbyTesting.junit.BaseJDBCTestCase;
import org.apache.derbyTesting.junit.BaseTestSuite;
import org.apache.derbyTesting.junit.J2EEDataSource;
import org.apache.derbyTesting.junit.JDBC;
import org.apache.derbyTesting.junit.TestConfiguration;

/**
 * Test for declared global temporary tables (introduced in Cloudscape 5.2)
 * and pooled connection close and jdbc 3.0 specific features
 * The jdbc3.0 specific featuers are holdable cursors, savepoints.
 * The rest of the temp table test are in declareGlobalTempTableJavaTest class. 
 * The reason for a different test class is that the holdability and savepoint 
 * support is under jdk14 and higher. But we want to be able to run the 
 * non-holdable tests under all the jdks we support and hence splitting the 
 * tests into two separate tests. 
 */


public class DeclareGlobalTempTableJavaJDBC30Test extends BaseJDBCTestCase {

    public DeclareGlobalTempTableJavaJDBC30Test(String name)
    {
        super(name);
    }	
    public static Test suite() {
        BaseTestSuite suite = new BaseTestSuite();
        suite.addTest(TestConfiguration.embeddedSuite(
                DeclareGlobalTempTableJavaJDBC30Test.class));
        suite.addTest(TestConfiguration.clientServerDecorator(
                getClientSuite()));
        return suite;
    }
    
    /**
     * Return a suite of tests that are run with client only
     * 
     * @return A suite of tests being run with client only
     */
    private static Test getClientSuite() {
        BaseTestSuite suite = new BaseTestSuite("Client/Server");
        // skip the tests with more than 1 savepoint -  
        // see (lack of support described in) DERBY-3687
        // so, only do the following with network server/client: 
        suite.addTest(new DeclareGlobalTempTableJavaJDBC30Test(
            "testOnCommitPreserveRowsWithHoldability"));
        suite.addTest(new DeclareGlobalTempTableJavaJDBC30Test(
            "testSavepointRollbackbehaviour7"));
        suite.addTest(new DeclareGlobalTempTableJavaJDBC30Test(
            "testSavepointRollbackbehaviour8"));
        suite.addTest(new DeclareGlobalTempTableJavaJDBC30Test(
            "testSavepointRollbackbehaviour11"));
        suite.addTest(new DeclareGlobalTempTableJavaJDBC30Test(
            "testSavepointRollbackbehaviour12"));
        suite.addTest(new DeclareGlobalTempTableJavaJDBC30Test(
            "testTest4"));
        suite.addTest(new DeclareGlobalTempTableJavaJDBC30Test(
            "testPooledConnectionClosed"));
        
        // following 2 fail with network server; see DERBY-4373
        /*
        suite.addTest(new DeclareGlobalTempTableJavaJDBC30Test(
            "testOnCommitDeleteRowsWithHoldableOpenCursor"));
        suite.addTest(new DeclareGlobalTempTableJavaJDBC30Test(
            "testOnCommitDeleteRowsHoldabilityWithPreparedStatements"));
        */
        return suite;
    }
    
    protected void setUp() throws Exception {
        super.setUp();
        getConnection().setAutoCommit(false);
    }
    protected void tearDown() throws Exception {
        super.tearDown();
    }
    /**
     *  Tests that If a Global Temp table(with on commi delete rows) has open 
     *  cursors held on it 
     *  Data should be preserved in at commit time
     *
     *  @throws SQLException 
     */
    public  void  testOnCommitDeleteRowsWithHoldableOpenCursor() 
    throws SQLException {
        Statement s1 = getConnection().createStatement(
                ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY,
                ResultSet.HOLD_CURSORS_OVER_COMMIT );
        s1.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit delete rows not logged");
        s1.executeUpdate("insert into session.t1 values(11, 1)");
        s1.executeUpdate("insert into session.t1 values(12, 2)");
        JDBC.assertSingleValueResultSet(s1.executeQuery(
                "select count(*) from SESSION.t1") , "2");
        //hold cursor open on t1. Commit should preserve the rows
        ResultSet rs1 = s1.executeQuery("select * from SESSION.t1");
        rs1.next();
        //cursor opened
        //Temp tables t2 & t3 with one held open cursor on them together. Data
        //should be preserved in t2 & t3 at commit time
        Statement s2 = getConnection().createStatement(
                ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY,
                ResultSet.HOLD_CURSORS_OVER_COMMIT );
        s2.executeUpdate("declare global temporary table SESSION.t2(" +
                "c21 int, c22 int) on commit delete rows not logged");
        s2.executeUpdate("insert into session.t2 values(21, 1)");
        s2.executeUpdate("insert into session.t2 values(22, 2)");
        JDBC.assertSingleValueResultSet(s2.executeQuery(
                "select count(*) from SESSION.t2"), "2");
        s2.executeUpdate("declare global temporary table SESSION.t3(" +
                "c31 int, c32 int) on commit delete rows not logged");
        s2.executeUpdate("insert into session.t3 values(31, 1)");
        s2.executeUpdate("insert into session.t3 values(32, 2)");
        JDBC.assertSingleValueResultSet(s2.executeQuery(
                "select count(*) from SESSION.t3") , "2");
        //hold cursor open on t2 & t3. Commit should preseve the rows
        ResultSet rs23 = s2.executeQuery(
                "select * from SESSION.t2, SESSION.t3 where c22=c32"); 
        rs23.next(); 
        //cursor Opened
        Statement s3 = getConnection().createStatement(
                ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY,
                ResultSet.HOLD_CURSORS_OVER_COMMIT );
        s3.executeUpdate("declare global temporary table SESSION.t4(" +
                "c41 int, c42 int) on commit delete rows not logged");
        s3.executeUpdate("insert into session.t4 values(41, 1)");
        s3.executeUpdate("insert into session.t4 values(42, 2)");
        ResultSet rs4 = s3.executeQuery("select count(*) from SESSION.t4");
        JDBC.assertSingleValueResultSet(rs4 , "2");
        //hold cursor open on t4 but close it before commit, 
        //Data should be deleted after commit
        rs4 = s3.executeQuery("select * from SESSION.t4");
        rs4.next();
        rs4.close();
        //rs4 closed before committing.
        commit();
        JDBC.assertSingleValueResultSet(s1.executeQuery(
                "select count(*) from SESSION.t1") , "2");
        JDBC.assertSingleValueResultSet(s2.executeQuery(
                "select count(*) from SESSION.t2") , "2");
        JDBC.assertSingleValueResultSet(s2.executeQuery(
                "select count(*) from SESSION.t3") , "2");
        JDBC.assertSingleValueResultSet(s3.executeQuery(
                "select count(*) from SESSION.t4") , "0");
        s1.executeUpdate("drop table SESSION.t1");
        s2.executeUpdate("drop table SESSION.t2");
        s3.executeUpdate("drop table SESSION.t3");   
        s3.executeUpdate("drop table SESSION.t4");
        rs1.close(); rs23.close(); rs4.close();
        commit();
        s1.close();  s2.close(); s3.close();
    }
    /**
     *  Test declared temporary table with ON COMMIT DELETE ROWS and holdable
     *  cursors on prepared statement
     *
     *  @throws SQLException 
     */
    public void testOnCommitDeleteRowsHoldabilityWithPreparedStatements() 
    throws SQLException {
        Statement s1 = createStatement();
        s1.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit delete rows not logged");
        s1.executeUpdate("insert into session.t1 values(11, 1)");
        s1.executeUpdate("insert into session.t1 values(12, 2)");
        //create a prepared statement with hold cursors over commit
        PreparedStatement ps1 = getConnection().prepareStatement(
                "select count(*) from SESSION.t1",
                ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY, 
                ResultSet.HOLD_CURSORS_OVER_COMMIT );
        ResultSet rs1 = ps1.executeQuery();
        JDBC.assertSingleValueResultSet(rs1 , "2");
        PreparedStatement ps2 = getConnection().prepareStatement(
                "select * from SESSION.t1", ResultSet.TYPE_FORWARD_ONLY,
                ResultSet.CONCUR_READ_ONLY, ResultSet.HOLD_CURSORS_OVER_COMMIT);
        //hold cursor open on t1. Commit should preserve the rows
        ResultSet rs11 = ps2.executeQuery();
        rs11.next();
        //Cursor was Opened.
        //Temp table t2 with one held cursor but it is closed before commit. 
        //Data should be deleted from t2 at commit time
        s1.executeUpdate("declare global temporary table SESSION.t2(" +
                "c21 int, c22 int) on commit delete rows not logged");
        s1.executeUpdate("insert into session.t2 values(21, 1)");
        s1.executeUpdate("insert into session.t2 values(22, 2)");
        //create a prepared statement with hold cursors over commit
        PreparedStatement ps3 = getConnection().prepareStatement(
                "select count(*) from SESSION.t2",
                ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY, 
                ResultSet.HOLD_CURSORS_OVER_COMMIT );
        ResultSet rs2 = ps3.executeQuery();
        JDBC.assertSingleValueResultSet(rs2 , "2");
        PreparedStatement ps4 = getConnection().prepareStatement(
                "select * from SESSION.t2", ResultSet.TYPE_FORWARD_ONLY, 		    ResultSet.CONCUR_READ_ONLY, ResultSet.HOLD_CURSORS_OVER_COMMIT );
        //hold cursor open on t2 but close it before commit
        rs2 = ps4.executeQuery();
        rs2.next();
        rs2.close();
        //commiting Point
        commit();
        JDBC.assertSingleValueResultSet(s1.executeQuery(
                "select count(*) from SESSION.t1") , "2");
        //Need to close the held cursor on t1 before t1 can be dropped
        rs11.close();
        rs1.close();
        JDBC.assertSingleValueResultSet(s1.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        s1.executeUpdate("drop table SESSION.t1");
        s1.executeUpdate("drop table SESSION.t2");
    }
    /**
     *  Tests a temporary table with ON COMMIT PRESERVE ROWS and various 
     *  combinations of holdability.
     *  Temp table t1 with held open cursors on it. Data should be preserved,
     *  holdability shouldn't matter
     *
     *  @throws SQLException 
     */
    public void testOnCommitPreserveRowsWithHoldability() throws SQLException	{
        //create a statement with hold cursors over commit
        Statement s1 = getConnection().createStatement(
                ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY,
                ResultSet.HOLD_CURSORS_OVER_COMMIT );
        s1.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows not logged");
        s1.executeUpdate("insert into session.t1 values(11, 1)");
        s1.executeUpdate("insert into session.t1 values(12, 2)");
        JDBC.assertSingleValueResultSet(s1.executeQuery(
                "select count(*) from SESSION.t1") , "2");
        //Opening the Cursor
        ResultSet rs1 = s1.executeQuery("select * from SESSION.t1");
        rs1.next();
        //create a statement without hold cursors.
        Statement s2 = createStatement();
        s1.executeUpdate("declare global temporary table SESSION.t2(" +
                "c11 int, c12 int) on commit preserve rows not logged");
        s1.executeUpdate("insert into session.t2 values(11, 1)");
        s1.executeUpdate("insert into session.t2 values(12, 2)");
        JDBC.assertSingleValueResultSet(s2.executeQuery(
                "select count(*) from SESSION.t2") , "2");
        //Opening The Cursor
        ResultSet rs2 = s2.executeQuery("select * from SESSION.t2");
        rs2.next();
        //commiting point
        commit();
        JDBC.assertSingleValueResultSet(s1.executeQuery(
                "select count(*) from SESSION.t1") , "2");
        JDBC.assertSingleValueResultSet(s2.executeQuery(
                "select count(*) from SESSION.t2") , "2");
        s1.executeUpdate("drop table SESSION.t1");
        s2.executeUpdate("drop table SESSION.t2");
    }
    /**
     *  Savepoint and Rollback behavior - 1 (3A)
     *  In the transaction Create savepoint1 and declare temp table t1. 
     *  Create savepoint 2, drop temp table t1, rollback savepoint 2 
     *  select should pass, rollback savepoint 1, select should fail.
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour1() throws SQLException {
        Statement s = createStatement();
        //Set The First savepoint
        Savepoint savepoint1 = getConnection().setSavepoint();
        //create a temp table t1
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows not logged");
        PreparedStatement pStmt = prepareStatement(
                "insert into SESSION.t1 values (?, ?)");
        pStmt.setInt(1, 11);
        pStmt.setInt(2, 1);
        pStmt.execute();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "1");
        //Set The Second savepoint
        Savepoint savepoint2 = getConnection().setSavepoint();
        //drop the temp table t1
        s.executeUpdate("drop table SESSION.t1");
        assertStatementError("42X05" , s , "select * from SESSION.t1");
        //Rollback to the second savepoint - drop table Operation is rolled 
        //back hence we should have t1
        getConnection().rollback(savepoint2);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");	
        //Rollback to the First savepoint - create table Operation is also 
        //rolled back hence there is no t1
        getConnection().rollback(savepoint1);
        assertStatementError("42X05" , s , "select * from SESSION.t1");
    }
    /**
     *  Savepoint and Rollback behavior - 2 (3B)
     *  In the transaction Create savepoint1 and declare temp table t1. 
     *  Create savepoint2 and declare temp table t2
     *  Release savepoint 1 and select from temp table t1 and t2.
     *  Drop temp table t2(explicit drop), rollback transaction(implicit drop
     *  of t1) Select from temp table t1 and t2 will fail.
     *
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour2() throws SQLException {
        Statement s = createStatement();
        //Set First savepoint (save point - 1)
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows not logged");
        //Set Second savepoint (save point - 2)
        Savepoint savepoint2 = getConnection().setSavepoint();
        s.executeUpdate("declare global temporary table SESSION.t2(" +
                "c21 int, c22 int) on commit preserve rows not logged");
        //Release First savepoint
        getConnection().releaseSavepoint(savepoint1);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        //Drop the Temp Table t2 Explicitly and t1 Implicitly(by rolling back)	
        s.executeUpdate("drop table SESSION.t2");
        rollback();
        assertStatementError("42X05" , s , "select * from SESSION.t1");
        assertStatementError("42X05" , s , "select * from SESSION.t2");
    }
    /**
     *  Savepoint and Rollback behavior - 3 (3C)
     *  In the transaction Create savepoint1 and declare temp table t1. 
     *  Create savepoint2 and declare temp table t2.
     *  Release savepoint 1 and select from temp table t1 and t2 should pass.
     *  Create savepoint3 and rollback savepoint3(should not touch t1 and t2)
     *  select from temp tables t1 and t2 should pass.
     *  Rollback transaction and select from temp tables t1 and t2 should fail.
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour3() throws SQLException  {
        Statement s = createStatement();
        //set first savepoint
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows  not logged");
        //set second savepoint
        Savepoint savepoint2 = getConnection().setSavepoint();
        s.executeUpdate("declare global temporary table SESSION.t2(" +
                "c21 int, c22 int) on commit preserve rows  not logged");
        //release the first savepoint
        getConnection().releaseSavepoint(savepoint1);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        //set third savepoint
        Savepoint savepoint3 = getConnection().setSavepoint();
        //rollback to third savepoint - (should not touch t1 and t2)
        getConnection().rollback(savepoint3);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        //rollback the entire transaction - this rolls back create statements
        //also hence t1 , t2 got deleted
        rollback();
        assertStatementError("42X05" , s , "select * from SESSION.t1");
        assertStatementError("42X05" , s , "select * from SESSION.t2");
    }
    /**
     *  Savepoint and Rollback behavior - 4 (3D)
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour4() throws SQLException {
        Statement s = createStatement();
        //set first savepoint
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows  not logged");
        //set second savepoint
        Savepoint savepoint2 = getConnection().setSavepoint();
        s.executeUpdate("drop table SESSION.t1");
        //rollback to second savepoint
        getConnection().rollback(savepoint2);
        JDBC.assertSingleValueResultSet(s.executeQuery("" +
                "select count(*) from SESSION.t1") , "0");
        //commit
        commit();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        s.executeUpdate("drop table SESSION.t1");
    }
    /**
     *  Savepoint and Rollback behavior - 5 - 3E
     *  Tests the basic definition of savepoint in combination with Rollback.
     *
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour5() throws SQLException {
        Statement s = createStatement();
        //set first savepoint 
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows  not logged");
        //set second savepoint
        Savepoint savepoint2 = getConnection().setSavepoint();
        s.executeUpdate("drop table SESSION.t1");
        //rollback to first savepoint
        getConnection().rollback(savepoint1);
        assertStatementError("42X05" , s , "select * from SESSION.t1");
    }
    
    /**
     *  Savepoint and Rollback behavior - 6 - 3J
     *  In the transaction: declare temp table t1 with 2 columns and commit.
     *  Create savepoint1 and drop temp table t1 with 2 columns, declare temp
     *  table t1 but this time with 3 columns.
     *  Create savepoint2 and drop temp table t1 with 3 columns, rollback,
     *  select from temp table t1 here should have 2 columns
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour6() throws SQLException {
        String[] s1 = {"C11" , "C12"};
        String[] s2 = {"C11" , "C12" , "C13"};
        Statement s = createStatement();
        // declare temp table t1 with 2 columns
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows  not logged");
        s.executeUpdate("insert into SESSION.t1 values(11, 11)");
        ResultSet rs1 = s.executeQuery("select * from SESSION.t1");
        JDBC.assertColumnNames(rs1 , s1);
        //commiting point
        getConnection().commit();
        //set first savepoint
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("drop table SESSION.t1");
        //declare temp table t1 with 3 columns
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int, c13 int not null) on commit preserve rows " +
                "not logged");
        s.executeUpdate("insert into SESSION.t1 values(22, 22, 22)");
        rs1 = s.executeQuery("select * from SESSION.t1");
        JDBC.assertColumnNames(rs1 , s2);
        //set second savepoint
        Savepoint savepoint2 = getConnection().setSavepoint();
        s.executeUpdate("drop table SESSION.t1");
        //rollback the transaction
        rollback();
        rs1 = s.executeQuery("select * from SESSION.t1");
        JDBC.assertColumnNames(rs1 , s1);	
        s.executeUpdate("drop table SESSION.t1");
    }
    /**
     *  Savepoint and Rollback behavior - 7 - 3K
     *  tests the savepoint and rollback behaviour with update command
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour7() throws SQLException {
        Statement s = createStatement();
        //declare temp table t1 & t2, insert few rows and commit
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows not logged " +
                "on rollback delete rows");
        s.executeUpdate("DECLARE GLOBAL TEMPORARY TABLE SESSION.t2(" +
                "c21 int, c22 int) on commit preserve rows not logged");
        s.executeUpdate("insert into SESSION.t1 values(11, 1)");
        s.executeUpdate("insert into session.t2 values(21, 1)");
        commit();
        //committed - the first transaction has been completed
        //In the next transaction, insert couple more rows in t1 & t2
        s.executeUpdate("insert into SESSION.t1 values(12, 2)");
        s.executeUpdate("insert into SESSION.t2 values(22, 2)");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "2");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "2");
        //set first savepoint
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("UPDATE SESSION.t1 SET c12 = 3 where c12>1");
        s.executeUpdate("UPDATE SESSION.t2 SET c22 = 3 where c22>2");
        //rollback to first savepoint
        getConnection().rollback(savepoint1);
        //Rollback to savepoint1 and we should loose all the rows in t1 temp
        //table t2 should also have no rows because attempt was made to modify 
        //it (even though nothing actually got modified in t2 in the savepoint)
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        commit();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        s.executeUpdate("drop table SESSION.t1");
        s.executeUpdate("drop table SESSION.t2");
    }
    /**
     *  Savepoint and Rollback behavior - 8 - 3L
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour8() throws SQLException {
        Statement s = createStatement();
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows  not logged on " +
                "rollback delete rows");
        s.executeUpdate("DECLARE GLOBAL TEMPORARY TABLE SESSION.t2(" +
                "c21 int, c22 int) on commit preserve rows  not logged on " +
                "rollback delete rows");
        s.executeUpdate("insert into SESSION.t1 values(11, 1)");
        s.executeUpdate("insert into session.t2 values(21, 1)");
        commit();
        //insert couple more rows in t1 & t2 and
        //Create savepoint1 and update some rows in t1 and inspect the data
        s.executeUpdate("insert into SESSION.t1 values(12, 2)");
        s.executeUpdate("insert into session.t2 values(22, 2)");
        //set first savepoint
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("UPDATE SESSION.t1 SET c12 = 3 where c12>1");
        s.executeUpdate("UPDATE SESSION.t2 SET c22 = 3 where c22>3");
        //rollback to first savepoint
        getConnection().rollback(savepoint1);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery("select count(*) from SESSION.t1") , "0");
        rollback();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        //cleanUp
        s.executeUpdate("drop table SESSION.t1");
        s.executeUpdate("drop table SESSION.t2");
    }
    /**
     *  Savepoint and Rollback behavior - 9 - 3M
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour9() throws SQLException {
        Statement s = createStatement();
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows not logged " +
                "on rollback delete rows");
        s.executeUpdate("DECLARE GLOBAL TEMPORARY TABLE SESSION.t2(" +
                "c21 int, c22 int) on commit preserve rows not logged on " +
                "rollback delete rows");
        s.executeUpdate("DECLARE GLOBAL TEMPORARY TABLE SESSION.t3(" +
                "c31 int, c32 int) on commit preserve rows not logged on " +
                "rollback delete rows");
        s.executeUpdate("DECLARE GLOBAL TEMPORARY TABLE SESSION.t4(" +
                "c41 int, c42 int) on commit preserve rows not logged on " +
                "rollback delete rows");
        s.executeUpdate("insert into SESSION.t1 values(11, 1)");
        s.executeUpdate("insert into SESSION.t2 values(21, 1)");
        s.executeUpdate("insert into SESSION.t3 values(31, 1)");
        s.executeUpdate("insert into SESSION.t4 values(41, 1)");
        commit();
        //Beginning of second transaction
        //Insert a couple of more rows into t1 , t2 and t3
        s.executeUpdate("insert into SESSION.t1 values(12, 2)");
        s.executeUpdate("insert into session.t2 values(22, 2)");
        s.executeUpdate("insert into session.t3 values(32, 2)");
        //set first savepoint                    
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("DELETE FROM SESSION.t1 where c12>1");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "1");
        //set second savepoint
        Savepoint savepoint2 = getConnection().setSavepoint();
        s.executeUpdate("DELETE FROM SESSION.t2 where c22>1");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "1");
        //Release savepoint2 and now savepoint1 should keep track of changes 
        //made to t1 and t2
        getConnection().releaseSavepoint(savepoint2);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "1");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "1");
        // Rollback savepoint1 and should see no data in t1 and t2
        getConnection().rollback(savepoint1);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        //Should see data in t3 since it was not touched in the savepoint that 
        //was rolled back
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t3") , "2");
        rollback();
        //Rolling back the transaction we should see no data in t1 and t2 and t3
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t3") , "0");
        //Should see data in t4 since it was not touched in the transaction that was rolled back
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t4") , "1");
        s.executeUpdate("drop table SESSION.t1");
        s.executeUpdate("drop table SESSION.t2");
        s.executeUpdate("drop table SESSION.t3");
        s.executeUpdate("drop table SESSION.t4");
    }
    /**
     *  Savepoint and Rollback behavior - 10 - 3N
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour10() throws SQLException {
        Statement s = createStatement();
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows not logged on " +
                "rollback delete rows");
        s.executeUpdate("DECLARE GLOBAL TEMPORARY TABLE SESSION.t2(" +
                "c21 int, c22 int) on commit preserve rows not logged on " +
                "rollback delete rows");
        s.executeUpdate("DECLARE GLOBAL TEMPORARY TABLE SESSION.t3(" +
                "c31 int, c32 int) on commit preserve rows not logged on " +
                "rollback delete rows");
        s.executeUpdate("DECLARE GLOBAL TEMPORARY TABLE SESSION.t4(" +
                "c41 int, c42 int) on commit preserve rows not logged on " +
                "rollback delete rows");
        s.executeUpdate("insert into SESSION.t1 values(11, 1)");
        s.executeUpdate("insert into SESSION.t1 values(12, 2)");
        s.executeUpdate("insert into SESSION.t2 values(21, 1)");
        s.executeUpdate("insert into SESSION.t2 values(22, 2)");
        s.executeUpdate("insert into SESSION.t3 values(31, 1)");
        s.executeUpdate("insert into SESSION.t4 values(41, 1)");
        commit();
        //In the next transaction, insert couple more rows in t3
        s.executeUpdate("insert into SESSION.t3 values(31, 2)");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t3") , "2");
        //Create savepoint1 and delete some rows from t1
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("DELETE FROM SESSION.t1 where c12>1");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "1");
        s.executeUpdate("DELETE FROM SESSION.t2 where c22>3");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "2");
        //Create savepoint2 and delete some rows from t2 
        Savepoint savepoint2 = getConnection().setSavepoint();
        s.executeUpdate("DELETE FROM SESSION.t2 where c22>1");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "1");
        //Rollback the transaction and should see no data in t1 and t2 and t3
        rollback();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t3") , "0");
        //Should see data in t4 since it was not touched in the transaction 
        //that was rolled back
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t4") , "1");
        s.executeUpdate("drop table SESSION.t1");
        s.executeUpdate("drop table SESSION.t2");
        s.executeUpdate("drop table SESSION.t3");
        s.executeUpdate("drop table SESSION.t4");
    }
    /**
     *  Savepoint and Rollback behavior - 11 - 3O
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour11() throws SQLException {
        Statement s = createStatement();
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows not logged on " +
                "rollback delete rows");
        s.executeUpdate("DECLARE GLOBAL TEMPORARY TABLE SESSION.t2(" +
                "c21 int, c22 int) on commit preserve rows not logged on " +
                "rollback delete rows");
        s.executeUpdate("insert into SESSION.t1 values(11, 1)");
        s.executeUpdate("insert into SESSION.t2 values(21, 1)");
        commit();
        s.executeUpdate("insert into SESSION.t1 values(12, 2)");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "2");
        //set the first savepoint here
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("insert into SESSION.t2 values(22, 2)");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "2");
        //Rollback savepoint1; expect no data in t2 but t1 should have data
        getConnection().rollback(savepoint1);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "2");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        //Commit the transaction; expect no data in t2 but t1 should have data
        commit();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "2");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        s.executeUpdate("drop table SESSION.t1");
        s.executeUpdate("drop table SESSION.t2");
    }
    /**
     *  Savepoint and Rollback behavior - 12 - 3P
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour12() throws SQLException {
        Statement s = createStatement();
        s.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit preserve rows not logged");
        s.executeUpdate("insert into SESSION.t1 values(11, 1)");
        s.executeUpdate("insert into SESSION.t1 values(12, 2)");
        commit();
        //set the first savepoint
        Savepoint savepoint1 = getConnection().setSavepoint();
        s.executeUpdate("insert into SESSION.t1 values(13, 3)");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "3");
        //release the savepoint - now transaction should keep track of changes
        //made to t1
        getConnection().releaseSavepoint(savepoint1);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "3");
        //Rollback the transaction and should still see no data in t1
        rollback();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        s.executeUpdate("drop table SESSION.t1");
    }
    /**
     *  Savepoint and Rollback behavior - 13 - 3Q
     *  tests the rollback , savepoint behaviour with prepartedStatement
     *  
     *  @throws SQLException 
     */
    public void testSavepointRollbackbehaviour13() throws SQLException {
        Statement s = createStatement();
        s.executeUpdate("DECLARE GLOBAL TEMPORARY TABLE SESSION.t2(" +
                "c21 int, c22 int) not logged on commit preserve rows");
        PreparedStatement pStmtInsert = prepareStatement(
                "insert into SESSION.t2 values (?, ?)");
        pStmtInsert.setInt(1, 21);
        pStmtInsert.setInt(2, 1);
        pStmtInsert.execute();
        pStmtInsert.setInt(1, 22);
        pStmtInsert.setInt(2, 2);
        pStmtInsert.execute();
        pStmtInsert.setInt(1, 23);
        pStmtInsert.setInt(2, 2);
        pStmtInsert.execute();
        PreparedStatement pStmtUpdate = prepareStatement(
                "UPDATE SESSION.t2 SET c22 = 3 where c21=?");
        pStmtUpdate.setInt(1, 23);
        pStmtUpdate.execute();
        PreparedStatement pStmtDelete = prepareStatement(
                "DELETE FROM SESSION.t2 where c21 = ?");
        pStmtDelete.setInt(1, 23);
        pStmtDelete.execute();
        commit();//committing point
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "2");
        //set the first savepoint
        Savepoint savepoint1 = getConnection().setSavepoint();
        pStmtInsert.setInt(1, 23);
        pStmtInsert.setInt(2, 2);
        pStmtInsert.execute();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2")  , "3");
        //set the second savepoint
        Savepoint savepoint2 = getConnection().setSavepoint();
        pStmtUpdate.setInt(1, 23);
        pStmtUpdate.execute();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "3");
        //rollback savepoint2 and should loose all the data from t2");
        getConnection().rollback(savepoint2);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "0");
        //Create savepoint3, insert some rows into t2 using prepared statement
        Savepoint savepoint3 = getConnection().setSavepoint();
        pStmtInsert.setInt(1, 21);
        pStmtInsert.setInt(2, 1);
        pStmtInsert.execute();
        pStmtInsert.setInt(1, 22);
        pStmtInsert.setInt(2, 2);
        pStmtInsert.execute();
        pStmtInsert.setInt(1, 23);
        pStmtInsert.setInt(2, 333);
        pStmtInsert.execute();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "3");
        //Create savepoint4 and update row inserted in savepoint3 using prepared
        //statement and inspect the data in t2
        Savepoint savepoint4 = getConnection().setSavepoint();
        pStmtUpdate.setInt(1, 23);
        pStmtUpdate.execute();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "3");
        //release savepoint4
        getConnection().releaseSavepoint(savepoint4);
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "3");
        pStmtDelete.setInt(1, 23);
        pStmtDelete.execute();
        //Commit transaction and should see data in t2
        commit();
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.t2") , "2");
        s.executeUpdate("drop table SESSION.t2");
    }	
    /**
     *  Test declared temporary table with ON COMMIT DELETE ROWS and holdable 
     *  cursors and temp table as part of subquery
     *  Temp table t1 with no direct held cursor open on it. 
     *  Data should be deleted from t1 at commit time
     *  
     *  @throws SQLException 
     */
    public void testTest4() throws SQLException {
        Statement s1 = getConnection().createStatement(
                ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY,
                ResultSet.HOLD_CURSORS_OVER_COMMIT );
        try {
            s1.executeUpdate("drop table t1");
        }
        catch(SQLException e)
        {
            assertSQLState("42Y55" , e);
        }	
        s1.executeUpdate("create table t1(c11 int, c12 int)");
        s1.executeUpdate("declare global temporary table SESSION.t1(" +
                "c11 int, c12 int) on commit delete rows not logged");
        s1.executeUpdate("insert into session.t1 values(11, 1)");
        s1.executeUpdate("insert into session.t1 values(12, 2)");
        JDBC.assertSingleValueResultSet(s1.executeQuery(
                "select count(*) from SESSION.t1") , "2");
        JDBC.assertSingleValueResultSet(s1.executeQuery(
                "select count(*) from t1") , "0");
        //Insert into real table using temporary table data on a statement with
        //holdability set to true
        s1.executeUpdate("INSERT INTO T1 SELECT * FROM SESSION.T1");
        commit();
        //Temp table t1 will have no data after commit
        JDBC.assertSingleValueResultSet(s1.executeQuery(
                "select count(*) from SESSION.t1") , "0");
        //Physical table t1 will have 2 rows after commit
        JDBC.assertSingleValueResultSet(s1.executeQuery(
                "select count(*) from t1") , "2");
        s1.executeUpdate("drop table SESSION.t1");
        s1.executeUpdate("drop table t1");
    }
    /**
     *  Temporary tables declared in a pooled connection should get dropped 
     *  when that pooled connection is closed.
     *  
     *  @throws SQLException 
     */
    public void testPooledConnectionClosed() throws SQLException {

        ConnectionPoolDataSource dscsp = 
            J2EEDataSource.getConnectionPoolDataSource();
        //In the first connection handle to the pooled connection, create 
        //physical session schema, create table t1 in it
        PooledConnection pc = dscsp.getPooledConnection();
        Connection pcon = pc.getConnection();
        Statement s = pcon.createStatement();
        try {
            s.executeUpdate("CREATE schema SESSION");
        }
        catch(SQLException e)
        {
            assertSQLState("X0Y68" , e);
        }
        s.executeUpdate("CREATE TABLE SESSION.tx(c21 int)");
        s.executeUpdate("insert into SESSION.tx values(11)");
        s.executeUpdate("insert into SESSION.tx values(12)");
        s.executeUpdate("insert into SESSION.tx values(13)");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.tx") , "3");
        //Declare temp table with same name as physical table in SESSION schema
        s.executeUpdate("declare global temporary table SESSION.tx(" +
                "c11 int, c12 int) on commit preserve rows not logged");
        s.executeUpdate("insert into SESSION.tx values(11,1)");
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.tx") , "1");
        commit();
        //Now close the connection handle to the pooled connection
        getConnection().close();
        //Do another getConnection() to get a new connection handle to the 
        //pooled connection
        s = getConnection().createStatement();
        //In this new handle, a select * from SESSION.tx should be looking at 
        //the physical session table
        JDBC.assertSingleValueResultSet(s.executeQuery(
                "select count(*) from SESSION.tx") , "3");
        s.executeUpdate("drop table SESSION.tx");
    }

    /**
     * Test that we don't get an NPE when re-using a PreparedStatement
     * on a temp table declared and then rolled back. See DERBY-6189.
     */
    public  void    test_derby_6189() throws Exception
    {
        Connection  conn = getConnection();

        conn.prepareStatement
            ( "DECLARE GLOBAL TEMPORARY TABLE SESSION.t6189( c21 int, c22 int) not logged on commit preserve rows" )
            .execute();        
        PreparedStatement pStmtInsert = conn.prepareStatement( "insert into SESSION.t6189 values (23, 1)" );

        pStmtInsert.execute();

        conn.rollback();

        assertStatementError("42X05", pStmtInsert); 
    }
    
}