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IDENTIFICATION DIVISION.
PROGRAM-ID. MPA002.
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
SOURCE-COMPUTER. xyz.
OBJECT-COMPUTER. xyz.
DATA DIVISION.
WORKING-STORAGE SECTION.
* EMBEDDED COBOL (file "MPA002.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.
*
* MPA002.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 dol1 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 code1 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, mpa002.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 TEST0231 *******************
DISPLAY " TEST0231 "
DISPLAY " Reference X3.135-1989 Section 4.16 Transactions
- " "
DISPLAY " Paragraph Two - Serializability
- " "
DISPLAY " SELECT into host variable and then"
DISPLAY " UPDATE with recomputed host variable"
DISPLAY " e.g. SELECT DOLLARS INTO :dol1 ... "
DISPLAY " dol1 = dol1 + 10 "
DISPLAY " UPDATE ... SET DOLLARS = :dol1 ..."
DISPLAY " - - - - - - - - - - - - - - - - - - -"
DISPLAY " *** This program is part A 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.
- " "
DISPLAY " This is Program A which starts first and
- " waits.... "
* -----Initialization-----
.
P100.
MOVE 0 TO code1
EXEC SQL DELETE FROM MP2_NEXTKEY END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE < 0) then
MOVE 1 TO code1
END-IF
MOVE 1 TO keyval
.
P101.
EXEC SQL INSERT
INTO MP2_NEXTKEY (KEYNUM,AUTHOR,DOLLARS)
VALUES (:keyval,'A',500) END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE NOT = 0) then
MOVE 1 TO code1
END-IF
COMPUTE keyval = keyval + 1
if (keyval < 1001) then
GO TO P101
END-IF
DISPLAY "1000 rows inserted into MP2_NEXTKEY "
MOVE 0 TO dollar
EXEC SQL SELECT SUM(DOLLARS) INTO :dollar
FROM MP2_NEXTKEY
WHERE KEYNUM = 1 OR KEYNUM = 500 OR KEYNUM = 999
END-EXEC
MOVE SQLCODE TO SQL-COD
DISPLAY "MPA002: sum of accounts 1, 500, and 999 starts at
- " $", dollar
DISPLAY "sum should be $1500 initially "
EXEC SQL COMMIT WORK END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE NOT = 0) then
MOVE 1 TO code1
END-IF
if (code1 = 1) then
DISPLAY " Cannot initialize MP2_NEXTKEY"
GO TO P100
END-IF
DISPLAY "MPA002: account 1 has $500 and account 500 has
- " $500"
* -----Synchronization-----
.
P102.
*pause a little
EXEC SQL DELETE FROM MP2_NN END-EXEC
MOVE SQLCODE TO SQL-COD
MOVE 1 TO i
.
P103.
EXEC SQL INSERT INTO MP2_NN VALUES (:i) END-EXEC
MOVE SQLCODE TO SQL-COD
COMPUTE i = i + 1
if (i < pauze) then
GO TO P103
END-IF
*end of pause
*are we in sync?
MOVE 0 TO dollar
EXEC SQL SELECT DOLLARS
INTO :dollar
FROM MP2_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 " PLEASE start program MPB002!!! "
GO TO P102
END-IF
*YES, we are in sync!
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 dol1
MOVE 0 TO dol500
*start record lock
EXEC SQL SELECT DOLLARS INTO :dol500
FROM MP2_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 :dol1
FROM MP2_NEXTKEY WHERE KEYNUM = 1 END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE NOT = 0) then
MOVE 1 TO iserr
GO TO P901
END-IF
COMPUTE dol500 = dol500 - 5
COMPUTE dol1 = dol1 + 5
EXEC SQL UPDATE MP2_NEXTKEY
SET DOLLARS = :dol1 WHERE KEYNUM = 1 END-EXEC
MOVE SQLCODE TO SQL-COD
if (SQLCODE NOT = 0) then
MOVE 1 TO iserr
GO TO P901
END-IF
EXEC SQL UPDATE MP2_NEXTKEY
SET DOLLARS = :dol500 WHERE KEYNUM = 500 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 "MPA002: account 1 has $", dol1 " and account
- " 500 has $", dol500
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 > 5) then
COMPUTE concur = concur + 1
DISPLAY " *** A 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 MP2_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 for MP2_NEXTKEY"
GO TO P130
END-IF
DISPLAY " MPA002: sum of accounts 1, 500, and 999 = $",
dollar
DISPLAY " sum should be $1500 after transferring
- " money"
EXEC SQL COMMIT WORK END-EXEC
MOVE SQLCODE TO SQL-COD
if (concur < 3 AND dollar = 1500) then
DISPLAY " Insufficient interleaving to demonstrate
- " concurrency!"
DISPLAY " Using TEd, decrease variable pauze to start"
DISPLAY " MPA002 sooner or increase value of variable
- " tranct"
DISPLAY " in both MPA002 and MPB002 to lengthen test."
DISPLAY " Then RERUN!"
GO TO P140
END-IF
if ( dollar = 1500) then
DISPLAY "mpa002.pco: *** pass *** "
EXEC SQL INSERT INTO HU.TESTREPORT
VALUES('0231','pass','PCO') END-EXEC
MOVE SQLCODE TO SQL-COD
else
DISPLAY "mpa002.pco: *** fail *** "
EXEC SQL INSERT INTO HU.TESTREPORT
VALUES('0231','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 TEST0231 *******************
**** TESTER MAY CHOOSE TO INSERT CODE FOR errcnt > 0
STOP RUN.
* **** Procedures for PERFORM statements
¤ Dauer der Verarbeitung: 0.30 Sekunden
(vorverarbeitet)
¤
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