Quellcode-Bibliothek mpb006.cob   Sprache: Cobol

       IDENTIFICATION DIVISION.
       PROGRAM-ID.  MPB006.
       ENVIRONMENT DIVISION.
       CONFIGURATION SECTION.
       SOURCE-COMPUTER.  xyz.
       OBJECT-COMPUTER.  xyz.
       DATA DIVISION.
       WORKING-STORAGE SECTION.


      * EMBEDDED COBOL (file "MPB006.PCO")  

      ****************************************************************
      *                                                              
      *                 COMMENT SECTION                              
      *                                                              
      * DATE 1992/07/16 EMBEDDED COBOL LANGUAGE                          
      * NIST SQL VALIDATION TEST SUITE V6.0                          
      *  DISCLAIMER:                                                  
      *  This program was written by employees of NIST to test SQL    
      *  implementations for conformance to the SQL standards.        
      *  NIST assumes no responsibility for any party's use of        
      *  this program.
      *                                                              
      * MPB006.PCO                                                    
      * WRITTEN BY: David W. Flater, based on MPB004                 
      *                                                              
      *   THIS ROUTINE TESTS THE SQLSTATE STATUS CODE.               
      *                                                              
      * This is part B of a two-part (A & B) program.                
      *                                                              
      * REFERENCES                                                   
      *   ANSI SQL-1992                                              
      *     22.1  SQLSTATE                                           
      *                                                              
      ****************************************************************



           EXEC SQL BEGIN DECLARE SECTION END-EXEC
       01  rollflg PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
       01  who1 PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
       01  who2 PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
       01  knum PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
       01  rslt1 PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
       01  rslt2 PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
       01  uid PIC  X(18).
       01  uidx PIC  X(18).
       01  SQLCODE PIC S9(9) COMP.
       01  SQLSTATE PIC  X(5).
             EXEC SQL END DECLARE SECTION END-EXEC
       01  errcnt PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
      *date_time declaration 
       01  TO-DAY PIC 9(6).
       01  THE-TIME PIC 9(8).
       01  cnt PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
       01  tranct PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
       01  code1 PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
       01  ii PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
       01  SQLST1 PIC  X(5).

       01  SQL-COD PIC S9(9) DISPLAY SIGN LEADING SEPARATE.

       PROCEDURE DIVISION.
       P0.


             MOVE "SULLIVAN1" TO uid
             CALL "AUTHID" USING uid
             MOVE "not logged in, not" TO uidx
             EXEC SQL SELECT USER INTO :uidx FROM HU.ECCO END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (uid  NOT  =   uidx) then
               DISPLAY "ERROR: User ", uid " expected. User ", uidx "
      -    " connected"
             STOP RUN 
             END-IF
             MOVE 0 TO errcnt
           DISPLAY
              "SQL Test Suite, V6.0, Embedded COBOL, mpb006.pco"
           DISPLAY
           "59-byte ID"
             DISPLAY "TEd Version #"
      *date_time print 
           ACCEPT TO-DAY FROM DATE
           ACCEPT THE-TIME FROM TIME
           DISPLAY "Date run YYMMDD: " TO-DAY " at hhmmssff: " THE-TIME

             COMPUTE rollflg = -1

             MOVE "x" TO SQLSTATE

      *concurrency tuning variables follow: 
             MOVE 50 TO tranct

             EXEC SQL COMMIT WORK END-EXEC
             MOVE SQLCODE TO SQL-COD

      ******************** BEGIN TEST0506 *******************

             DISPLAY " TEST0506 "
             DISPLAY "SQLSTATE = 40001: transaction rollback"
             DISPLAY " (serialization failure)"
             DISPLAY "Reference ANSI SQL-1992,"
             DISPLAY " section 22.1 SQLSTATE"
             DISPLAY " section 4.18.1 Status parameters"
             DISPLAY " - - - - - - - - - - - - - - - - - - -"

             DISPLAY "*** This program is part B of a two-part"
             DISPLAY "*** program (A & B)."

             DISPLAY " This is Program B which starts after Program A...
      -    " "

           .
        P100.
             EXEC SQL DELETE FROM MP6_BB END-EXEC
             MOVE SQLCODE TO SQL-COD

             if (SQLCODE  <  0) then
               DISPLAY "*****Error initializing tables ****"
               EXEC SQL ROLLBACK WORK END-EXEC
               MOVE SQLCODE TO SQL-COD
               GO TO P100
             END-IF

             EXEC SQL COMMIT WORK END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               DISPLAY "*********Setup will not commit ********"
               EXEC SQL ROLLBACK WORK END-EXEC
               MOVE SQLCODE TO SQL-COD
               GO TO P100
             END-IF

      *                      -----Synchronization----- 

           .
        P105.
             MOVE 0 TO knum
             EXEC SQL SELECT COUNT(*)
               INTO :knum
               FROM MP6_NEXTKEY WHERE AUTHOR = 'A' END-EXEC
             MOVE SQLCODE TO SQL-COD

             EXEC SQL COMMIT WORK END-EXEC
             MOVE SQLCODE TO SQL-COD

      *are we in sync? 

             if (knum  =  0) then
               DISPLAY " PLEASE start program MPA006!!! "
               GO TO P105
             END-IF

           .
        P106.
             MOVE 0 TO code1
             EXEC SQL INSERT INTO MP6_NEXTKEY (KEYNUM,AUTHOR)
               VALUES(2, 'B') END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               MOVE 1 TO code1
             END-IF
             EXEC SQL COMMIT WORK END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               MOVE 1 TO code1
             END-IF
             if (code1  NOT =  0) then
               EXEC SQL ROLLBACK WORK END-EXEC
               MOVE SQLCODE TO SQL-COD
               DISPLAY "Retrying synchronization logic."
               GO TO P106
             END-IF

      *YES, we are in sync! 

             DISPLAY "Transaction B Starts!! "
      *date_time print 
           ACCEPT TO-DAY FROM DATE
           ACCEPT THE-TIME FROM TIME
           DISPLAY "Date run YYMMDD: " TO-DAY " at hhmmssff: " THE-TIME
             DISPLAY  " "
             DISPLAY "IF this test lasts too long, DEADLOCK "
             DISPLAY "has taken place, STOP this test!"
      *** The attack begins here. **

      *Rollback detection--HOPE that this doesn't fail. 
             EXEC SQL INSERT INTO MP6_BB VALUES (1) END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               DISPLAY "**** --> FATAL ERROR: Failure within rollback
      -    " detection"
               DISPLAY "Aborting test--try rerunning."
               COMPUTE errcnt = errcnt + 1
               EXEC SQL ROLLBACK WORK END-EXEC
               MOVE SQLCODE TO SQL-COD
               GO TO P193
             END-IF

      *          -----Concurrent Transaction Loops----- 
           .
        P110.
             EXEC SQL SELECT NUMTEST INTO :who2  FROM MP6_MM2 END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               GO TO P198
             END-IF

      *MP6_MM2 UPDATE loop 
             MOVE 0 TO cnt
           .
        P111.
             EXEC SQL UPDATE MP6_MM2
               SET NUMTEST = NUMTEST - 3 END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               GO TO P198
             END-IF
             COMPUTE cnt = cnt + 1
             if (cnt  <  tranct) then
               GO TO P111
             END-IF

             EXEC SQL SELECT NUMTEST INTO :who1 FROM MP6_NN END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               GO TO P198
             END-IF

      *MP6_NN UPDATE loop 
             MOVE 0 TO cnt

           .
        P112.
             EXEC SQL UPDATE MP6_NN
               SET NUMTEST = NUMTEST - 5 END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               GO TO P198
             END-IF
             COMPUTE cnt = cnt + 1
             if (cnt  <  4) then
               GO TO P112
             END-IF

             EXEC SQL SELECT NUMTEST INTO :rslt1 FROM MP6_NN END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               GO TO P198
             END-IF
             EXEC SQL SELECT NUMTEST INTO :rslt2 FROM MP6_MM2 END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               GO TO P198
             END-IF
             EXEC SQL COMMIT WORK END-EXEC
             MOVE SQLCODE TO SQL-COD
      *Did we get rolled back when we tried to commit? 
             if (SQLCODE  NOT =  0) then
               GO TO P198
             END-IF

      *end transaction 
             DISPLAY "MPB006 transaction completed !! at time: "
      *date_time print 
           ACCEPT TO-DAY FROM DATE
           ACCEPT THE-TIME FROM TIME
           DISPLAY "Date run YYMMDD: " TO-DAY " at hhmmssff: " THE-TIME

             DISPLAY  " "
      *date_time print 
           ACCEPT TO-DAY FROM DATE
           ACCEPT THE-TIME FROM TIME
           DISPLAY "Date run YYMMDD: " TO-DAY " at hhmmssff: " THE-TIME
             DISPLAY "MPB006 was not victimized. Look for a
      -    " ??DEADLOCK??"
             DISPLAY "message from MPA006. If there isn't one, rerun"
             DISPLAY "the test after increasing the value of variable"
             DISPLAY "tranct. If the implementation under test
      -    " transparently"
             DISPLAY "serializes all transactions, it will not be
      -    " possible to"
             DISPLAY "generate a negative SQLCODE regardless of the
      -    " value of tranct."

             GO TO P193

           .
        P198.
      *We got a negative SQLCODE. 
      *Was this transaction rollback or statement error? 

             MOVE SQLCODE TO ii
             MOVE SQLSTATE TO SQLST1

             DISPLAY  " "
             DISPLAY "!+!+!+!+!+!+!+!+ DEADLOCK? !+!+!+!+!+!+!+!+!+!+!"
             DISPLAY "Negative SQLCODE (Deadlock?) was returned earlier"
             DISPLAY "!+!+!+!+!+!+!+!+ DEADLOCK? !+!+!+!+!+!+!+!+!+!+!"
      *date_time print 
           ACCEPT TO-DAY FROM DATE
           ACCEPT THE-TIME FROM TIME
           DISPLAY "Date run YYMMDD: " TO-DAY " at hhmmssff: " THE-TIME
             DISPLAY " SQLCODE is ", ii
             DISPLAY " SQLSTATE is ", SQLST1
             DISPLAY " SQLSTATE has been saved into variable SQLST1."

      *Was the whole transaction rolled back or was it just a 
      *single statement failure?                              
             DISPLAY  " "
             DISPLAY "SELECT COUNT(*) INTO :rollflg FROM MP6_BB"
             DISPLAY " WHERE BNUM = 1;"
             DISPLAY "ROLLBACK WORK;"
             EXEC SQL SELECT COUNT(*) INTO :rollflg FROM MP6_BB
               WHERE BNUM = 1 END-EXEC
             MOVE SQLCODE TO SQL-COD
             if (SQLCODE  NOT =  0) then
               DISPLAY "**** --> FATAL ERROR: Failure within rollback
      -    " detection"
               DISPLAY "Aborting test--try rerunning."
               COMPUTE errcnt = errcnt + 1
               EXEC SQL ROLLBACK WORK END-EXEC
               MOVE SQLCODE TO SQL-COD
               GO TO P193
             END-IF
             EXEC SQL ROLLBACK WORK END-EXEC
             MOVE SQLCODE TO SQL-COD
             DISPLAY "rollflg is ", rollflg

             DISPLAY "rollflg = 0 Transaction was rolled back"
             DISPLAY "rollflg = 1 Transaction was not rolled back"
             DISPLAY "otherwise Database error, automatic fail"
             DISPLAY  " "
             DISPLAY "If SQLST1 is x (never set), fail.
      -    " Else:"
             DISPLAY "If rollback and SQLST1 is 40001, pass.
      -    " Else:"
             DISPLAY "If rollback and SQLST1 is not 40001, fail.
      -    " Else:"
             DISPLAY "If no rollback and SQLST1 is 40xxx, fail.
      -    " Else:"
             DISPLAY "If SQLST1 is 00xxx or 01xxx (completion), fail
      -    " Else:"
             DISPLAY "For other SQLST1 values "
             DISPLAY " (we assume DBMS LOCK ERROR), pass!"
             DISPLAY "We may be persuaded that other SQLST1 values"
             DISPLAY "in the range 40xxx pass for a rollback. Call
      -    " NIST!"

      *If we got a statement rollback, SQLSTATE cannot be 40xxx 
      *since this indicates a transaction rollback; neither can 
      *it be 00xxx (success) or 01xxx (warning) since these are 
      *completion conditions and are incompatible with getting  
      *a negative SQLCODE.                                      

             if (SQLST1   =   "x") then
               GO TO P192
             END-IF
             if (SQLST1   =   "40001"  AND  rollflg  =  0) then
               GO TO P191
             END-IF
             if (rollflg  =  0) then
               GO TO P192
             END-IF
             if (SQLST1   >   "40 "  AND  SQLST1   <   "41 ") then
               GO TO P192
             END-IF
             if (SQLST1   >   "00 "  AND  SQLST1   <   "02 ") then
               GO TO P192
             END-IF

           .
        P191.
      *PASS! 
             DISPLAY "mpb006.pco: *** pass *** "
             EXEC SQL INSERT INTO HU.TESTREPORT
               VALUES('0506','pass','PCO') END-EXEC
             MOVE SQLCODE TO SQL-COD
             EXEC SQL COMMIT WORK END-EXEC
             MOVE SQLCODE TO SQL-COD
             GO TO P193

           .
        P192.
      *FAIL! 
             DISPLAY " mpb006.pco *** fail *** "
             EXEC SQL INSERT INTO HU.TESTREPORT
               VALUES('0506','fail','PCO') END-EXEC
             MOVE SQLCODE TO SQL-COD
             COMPUTE errcnt = errcnt + 1
             EXEC SQL COMMIT WORK END-EXEC
             MOVE SQLCODE TO SQL-COD

           .
        P193.
             DISPLAY  " "
             DISPLAY
             "===================================================="

      ******************** END TEST0506 *******************

      **** TESTER MAY CHOOSE TO INSERT CODE FOR errcnt > 0
           STOP RUN.

      *    ****  Procedures for PERFORM statements