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IDENTIFICATION DIVISION.
PROGRAM-ID. MPB003.
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
SOURCE-COMPUTER. xyz.
OBJECT-COMPUTER. xyz.
DATA DIVISION.
WORKING-STORAGE SECTION.
* EMBEDDED COBOL (file "MPB003.PCO")
****************************************************************
*
* COMMENT SECTION
*
* DATE 1988/12/07 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.
*
* MPB003.PCO
* WRITTEN BY: J Sullivan
*
* THIS PROGRAM IS PART A OF A TWO-PART PROGRAM(A & B) THAT
* TESTS THE CONCURRENCY OF SQL
*
* REFERENCES
* AMERICAN NATIONAL STANDARD database language - SQL
* X3.135-1989
*
* SECTION 4.16 Transactions
* Paragraph Two
****************************************************************
EXEC SQL BEGIN DECLARE SECTION END-EXEC
01 dol999 PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 dol500 PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 dollar PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 keyval PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 i PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 uid PIC X(18).
01 uidx PIC X(18).
EXEC SQL END DECLARE SECTION END-EXEC
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 iserr PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 pauze PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 tranct PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 olddol PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 doldif PIC S9(9) DISPLAY SIGN LEADING SEPARATE.
01 concur 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, mpb003.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
*concurrency tuning variables follow:
MOVE 11 TO pauze
MOVE 15 TO tranct
EXEC SQL COMMIT WORK END-EXEC
MOVE SQLCODE TO SQL-COD
******************** BEGIN TEST0232 *******************
DISPLAY " TEST0232 "
DISPLAY " Reference X3.135-1989 Section 4.16 Transactions
- " "
DISPLAY " Paragraph Two - Serializability
- " "
DISPLAY " UPDATE with arithmetic column expression"
DISPLAY " e.g. UPDATE ... SET DOLLARS = DOLLARS + 10
- " ..."
DISPLAY " - - - - - - - - - - - - - - - - - - -"
DISPLAY " *** This program is part B of a two-part
- " "
DISPLAY " *** program (A & B) that tests for the
- " concurrency "
DISPLAY " *** of SQL. Program A inserts 1000 rows into "
DISPLAY " *** a table and waits for Program B.
- " "
* -----Synchronization-----
.
P100.
*pause a little
EXEC SQL DELETE FROM MP3_MM2 END-EXEC
MOVE SQLCODE TO SQL-COD
MOVE 1 TO i
.
P101.
EXEC SQL INSERT INTO MP3_MM2 VALUES (:i) END-EXEC
MOVE SQLCODE TO SQL-COD
COMPUTE i = i + 1
if (i < pauze) then
GO TO P101
END-IF
*end of pause
*are we in sync?
MOVE 0 TO dollar
EXEC SQL SELECT DOLLARS
INTO :dollar
FROM MP3_NEXTKEY WHERE KEYNUM = 999 END-EXEC
MOVE SQLCODE TO SQL-COD
EXEC SQL COMMIT WORK END-EXEC
MOVE SQLCODE TO SQL-COD
if (dollar = 500) then
DISPLAY "This is Program B. "
DISPLAY "Program A has initialized the table. "
else
DISPLAY "Waiting for program MPA003 to start "
GO TO P100
END-IF
*YES, we are in sync!
DISPLAY "MPB003: account 500 has $500 and account 999 has
- " $500"
MOVE 0 TO doldif
MOVE 0 TO concur
MOVE 500 TO olddol
MOVE 0 TO i
* -----Concurrent Transaction Loop-----
.
P120.
MOVE 0 TO iserr
MOVE 0 TO dol999
MOVE 0 TO dol500
*start record lock
EXEC SQL UPDATE MP3_NEXTKEY
SET DOLLARS = DOLLARS + 10 WHERE KEYNUM = 999 END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE NOT = 0) then
MOVE 1 TO iserr
GO TO P901
END-IF
EXEC SQL UPDATE MP3_NEXTKEY
SET DOLLARS = DOLLARS - 10 WHERE KEYNUM = 500 END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE NOT = 0) then
MOVE 1 TO iserr
GO TO P901
END-IF
EXEC SQL SELECT DOLLARS INTO :dol500
FROM MP3_NEXTKEY WHERE KEYNUM = 500 END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE NOT = 0) then
MOVE 1 TO iserr
GO TO P901
END-IF
EXEC SQL SELECT DOLLARS INTO :dol999
FROM MP3_NEXTKEY WHERE KEYNUM = 999 END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE NOT = 0) then
MOVE 1 TO iserr
GO TO P901
END-IF
.
P901.
if (iserr = 0) then
EXEC SQL COMMIT WORK END-EXEC
MOVE SQLCODE TO SQL-COD
DISPLAY "MPB003:account 500 has $", dol500 " and account
- " 999 has $", dol999
COMPUTE doldif = olddol - dol500
MOVE dol500 TO olddol
END-IF
if (iserr = 1 OR SQLCODE NOT = 0) then
MOVE 1 TO iserr
EXEC SQL ROLLBACK WORK END-EXEC
MOVE SQLCODE TO SQL-COD
COMPUTE tranct = tranct + 1
DISPLAY "ROLLBACK due to nonzero SQLCODE (Deadlock?)"
END-IF
if (iserr = 0 AND doldif > 10) then
COMPUTE concur = concur + 1
DISPLAY " *** B interleaved #", concur
END-IF
*end record lock
COMPUTE i = i + 1
if (i < tranct) then
GO TO P120
END-IF
* -----Evaluation-----
.
P130.
MOVE 0 TO dollar
EXEC SQL SELECT SUM(DOLLARS) INTO :dollar
FROM MP3_NEXTKEY
WHERE KEYNUM = 1 OR KEYNUM = 500 OR KEYNUM = 999
END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE NOT = 0) then
DISPLAY "Cannot select from MP3_NEXTKEY"
GO TO P130
END-IF
DISPLAY "MPB003: sum of accounts 1, 500, and 999 = $",
dollar
DISPLAY " sum should be $1500 after transferring money"
if (concur < 3 AND dollar = 1500) then
DISPLAY " Insufficient interleaving to demonstrate
- " concurrency!"
DISPLAY " Using TEd, decrease variable pauze to start"
DISPLAY " MPB003 sooner or increase value of variable
- " tranct"
DISPLAY " in both MPA003 and MPB003 to lengthen test."
DISPLAY " Then RERUN!"
GO TO P140
END-IF
if ( dollar = 1500) then
DISPLAY "mpb003.pco: *** pass *** "
EXEC SQL INSERT INTO HU.TESTREPORT
VALUES('0232','pass','PCO') END-EXEC
MOVE SQLCODE TO SQL-COD
else
DISPLAY "mpb003.pco: *** fail *** "
EXEC SQL INSERT INTO HU.TESTREPORT
VALUES('0232','fail','PCO') END-EXEC
MOVE SQLCODE TO SQL-COD
COMPUTE errcnt = errcnt + 1
END-IF
.
P140.
DISPLAY " "
DISPLAY
"===================================================="
EXEC SQL COMMIT WORK END-EXEC
MOVE SQLCODE TO SQL-COD
******************** END TEST0232 *******************
**** TESTER MAY CHOOSE TO INSERT CODE FOR errcnt > 0
STOP RUN.
* **** Procedures for PERFORM statements
¤ Dauer der Verarbeitung: 0.16 Sekunden
(vorverarbeitet)
¤
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