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IDENTIFICATION DIVISION.
PROGRAM-ID. MPB007.
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
SOURCE-COMPUTER. xyz.
OBJECT-COMPUTER. xyz.
DATA DIVISION.
WORKING-STORAGE SECTION.
* EMBEDDED COBOL (file "MPB007.PCO")
****************************************************************
*
* COMMENT SECTION
*
* DATE 1992/07/17 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.
*
* MPB007.PCO
* WRITTEN BY: David W. Flater
*
* THIS PROGRAM IS PART B OF A TWO-PART PROGRAM(A & B) THAT
* TESTS THE CONCURRENCY OF SQL
*
* REFERENCES
* ANSI SQL-1992
* 4.28 SQL-transactions
*
****************************************************************
EXEC SQL BEGIN DECLARE SECTION END-EXEC
01 tmpint PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 uid PIC X(18).
01 knum PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 uidx PIC X(18).
EXEC SQL END DECLARE SECTION END-EXEC
01 i PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 SQLCODE PIC S9(9) COMP.
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 code1 PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 pauze PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 count1 PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 loops PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 flcnt PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 mxfail PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
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, mpb007.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
MOVE 1 TO pauze
MOVE 5 TO loops
MOVE 0 TO flcnt
MOVE 50 TO mxfail
******************** BEGIN TEST0507 *******************
DISPLAY " TEST0507 "
DISPLAY " Transactions serializable: dueling cursors"
DISPLAY "Reference ANSI SQL-1992 section 4.28
- " SQL-transactions"
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...
- " "
* -----Synchronization-----
.
P105.
MOVE 0 TO knum
EXEC SQL SELECT COUNT(*)
INTO :knum
FROM MP7_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 MPA007!!! "
GO TO P105
END-IF
.
P106.
MOVE 0 TO code1
EXEC SQL INSERT INTO MP7_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!"
MOVE 1 TO i
*We hired a couple of summer students to write application
*programs. The first one wrote application Yook, which
*only works if all the data are in table BB, and table AA
*is empty. The second one wrote application Zook, which
*only works if all the data are in table AA, and table BB
*is empty. The table names were hard-coded everywhere, so
*rather than rewrite everything we just had another summer
*student add code to move the data into the right table
*before each application starts up. This more or less
*solved the problem, but we have to be careful not to have
*two people trying to run the applications simultaneously.
.
P101.
*Move all data into table AA for application Zook.
EXEC SQL DECLARE ZOOK CURSOR FOR
SELECT BNUM FROM MP7_BB END-EXEC
if (SQLCODE < 0) then
GO TO P120
END-IF
EXEC SQL OPEN ZOOK END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE < 0) then
GO TO P120
END-IF
MOVE 0 TO count1
.
P104.
EXEC SQL FETCH ZOOK INTO :tmpint END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE < 0) then
GO TO P120
END-IF
if (SQLCODE > 0) then
EXEC SQL COMMIT WORK END-EXEC
MOVE SQLCODE TO SQL-COD
DISPLAY count1 " rows moved from MP7_BB to MP7_AA."
*date_time print
ACCEPT TO-DAY FROM DATE
ACCEPT THE-TIME FROM TIME
DISPLAY "Date run YYMMDD: " TO-DAY " at hhmmssff: " THE-TIME
if (SQLCODE < 0) then
GO TO P120
END-IF
GO TO P103
END-IF
EXEC SQL INSERT INTO MP7_AA VALUES (:tmpint) END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE < 0) then
GO TO P120
END-IF
EXEC SQL DELETE FROM MP7_BB WHERE CURRENT OF ZOOK END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE < 0) then
GO TO P120
END-IF
COMPUTE count1 = count1 + 1
GO TO P104
.
P120.
COMPUTE flcnt = flcnt + 1
if (flcnt > mxfail) then
GO TO P180
END-IF
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 "Restarting transaction ", i "A."
EXEC SQL ROLLBACK WORK END-EXEC
MOVE SQLCODE TO SQL-COD
GO TO P101
.
P103.
*Move all data into table BB for application Yook.
EXEC SQL DECLARE YOOK CURSOR FOR
SELECT ANUM FROM MP7_AA END-EXEC
if (SQLCODE < 0) then
GO TO P110
END-IF
EXEC SQL OPEN YOOK END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE < 0) then
GO TO P110
END-IF
MOVE 0 TO count1
.
P102.
EXEC SQL FETCH YOOK INTO :tmpint END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE < 0) then
GO TO P110
END-IF
if (SQLCODE > 0) then
EXEC SQL COMMIT WORK END-EXEC
MOVE SQLCODE TO SQL-COD
DISPLAY count1 " rows moved from MP7_AA to MP7_BB."
*date_time print
ACCEPT TO-DAY FROM DATE
ACCEPT THE-TIME FROM TIME
DISPLAY "Date run YYMMDD: " TO-DAY " at hhmmssff: " THE-TIME
if (SQLCODE < 0) then
GO TO P110
END-IF
GO TO P166
END-IF
EXEC SQL INSERT INTO MP7_BB VALUES (:tmpint) END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE < 0) then
GO TO P110
END-IF
EXEC SQL DELETE FROM MP7_AA WHERE CURRENT OF YOOK END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE < 0) then
GO TO P110
END-IF
COMPUTE count1 = count1 + 1
GO TO P102
.
P166.
*date_time print
ACCEPT TO-DAY FROM DATE
ACCEPT THE-TIME FROM TIME
DISPLAY "Date run YYMMDD: " TO-DAY " at hhmmssff: " THE-TIME
DISPLAY "Survived transaction ", i "."
if (i NOT < loops) then
GO TO P199
END-IF
COMPUTE i = i + 1
GO TO P101
.
P110.
COMPUTE flcnt = flcnt + 1
if (flcnt > mxfail) then
GO TO P180
END-IF
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 "Restarting transaction ", i "B."
EXEC SQL ROLLBACK WORK END-EXEC
MOVE SQLCODE TO SQL-COD
GO TO P103
.
P180.
DISPLAY " "
DISPLAY "Maximum number of negative SQLCODEs exceeded"
DISPLAY "Assuming no progress"
DISPLAY "Program B giving up..."
EXEC SQL ROLLBACK WORK END-EXEC
MOVE SQLCODE TO SQL-COD
.
P199.
*Finish up
DISPLAY " "
DISPLAY "Program A decides whether this was a pass or not."
DISPLAY "Program B is now exiting."
*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
"===================================================="
******************** END TEST0507 *******************
**** TESTER MAY CHOOSE TO INSERT CODE FOR errcnt > 0
STOP RUN.
* **** Procedures for PERFORM statements
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