DOCUMENT:Q183179 08-JUN-2000 [sna] TITLE :Using PL/I Programs with COM Transaction Integrator PRODUCT :Microsoft SNA Server PROD/VER:WINDOWS:1.0,4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft COM Transaction Integrator for CICS and IMS, version 1.0, used with: - Microsoft SNA Server, version 4.0 ------------------------------------------------------------------------------- SUMMARY ======= PL/I is not supported by Component Builder. Nevertheless, you can use COM Transaction Integrator for CICS and IMS (COMTI) with PL/I programs operating in CICS or IMS. To do so, code the programs with data declarations that define memory the same way that the equivalent COBOL declarations do. For example, a CICS program can perform an EXEC CICS LINK to either a PL/I program or a COBOL program if the structure defining DFHCOMMAREA in the two programs is equivalent. Similarly, a COMTI component could be used equally well with either program using a CICS LINK Remote Environment (RE). The same mechanisms hold true by extrapolation for CICS and IMS REs. All you need to know is how to achieve the same memory mapping in PL/I and COBOL. This article presents data type comparisons for the two languages. MORE INFORMATION ================ Note that the developer who is responsible for creating components for PL/I transaction programs (TP) should be familiar with both languages. Data alignment is an important issue. PL/I structures are ALIGNED by default; for example, a fullword integer (4 bytes) within a structure is ALIGNED on a mainframe fullword boundary. This can cause a discrepancy with similar COBOL statements and the PL/I structure should probably be declared as UNALIGNED. This is particularly important for the DFHCOMMAREA declaration. This data structure must be unaligned. You must, therefore, specify the UNALIGNED keyword on the structure declaration. You should use care when dealing with the COBOL "OCCURS DEPENDING ON" clause. The following samples show a comparison of a COBOL construction with a similar PL/I construction. COBOL Sample ------------ 01 STRUCT1. 02 X PIC S9(4) COMP. 02 Y OCCURS 1 TO 100 TIMES DEPENDING ON X PIC X(10). PL/I Sample ----------- DCL 1 STRUCT1, 2 X FIXED BIN(15), 2 Y (1:100 REFER(X)) CHAR(10); COMTI Data Conversion Language Mapping Lists -------------------------------------------- VB type COBOL type PL/I type ------- -------------------- --------------- Integer PIC S9(n) COMP FIXED BIN(15) (n <= 4) (see NOTE) PIC S9(n) COMP-3 FIXED DEC(n) (n <= 4) (n <= 4) PIC S9(n) PIC '9(n-1)T' (n <= 4) (n <= 4) PIC S9(n) LEADING PIC 'T9(n-1)' (n <= 4) (n <= 4) PIC S9(n) SIGN SEPARATE PIC '9(n)S' (n <= 4) (n <= 4) PIC S9(n) PIC 'S9(n)' SIGN SEPARATE LEADING (n <= 4) (n <= 4) Long PIC S9(n) COMP (n <= 9) FIXED BIN(31) PIC S9(n) COMP-3 FIXED DEC(n) (n <= 9) (n <= 9) PIC S9(n) PIC '9(n-1)T' (n <= 9) (n <= 9) PIC S9(n) LEADING PIC 'T9(n-1)' (n <= 9) (n <= 9) PIC S9(n) SIGN SEPARATE PIC '9(n)S' (n <= 9) (n <= 9) PIC S9(n) PIC 'S9(n)' SIGN SEPARATE LEADING (n <= 9) (n <= 9) Single COMP-1 FLOAT BIN(21) PIC S9(m)V9(n) COMP-3 FIXED DEC(m+n,n) PIC S9(m)V9(n) COMP FIXED BIN(15,n) (m+n <= 4) (See NOTE) PIC S9(m)V9(n) COMP FIXED BIN(31,n) (m+n <= 9) PIC S9(m)V9(n) PIC '9(m)V9(n-1)T' PIC S9(m)V9(n) LEADING PIC 'T9(m-1)V9(n)' PIC S9(m)V9(n) PIC '9(m)V9(n)S' SIGN SEPARATE PIC S9(m)V9(n) PIC 'S9(m)V9(n)' SIGN SEPARATE LEADING Double COMP-2 FLOAT BIN(53) PIC S9(m)V9(n) COMP-3 FIXED DEC(m+n,n) PIC S9(m)V9(n) COMP FIXED BIN(15,n) (m+n <= 4) (Footnote.) PIC S9(m)V9(n) COMP FIXED BIN(31,n) (m+n <= 9) PIC S9(m)V9(n) PIC '9(m)V9(n-1)T' PIC S9(m)V9(n) LEADING PIC 'T9(m-1)V9(n)' PIC S9(m)V9(n) PIC '9(m)V9(n)S' SIGN SEPARATE PIC S9(m)V9(n) PIC 'S9(m)V9(n)' SIGN SEPARATE LEADING Currency PIC S9(13)V99 COMP-3 FIXED DEC(15,2) PIC S9(m)V9(n) COMP-3 FIXED DEC(m+n,n) (n <= 4) (m+n < 16) PIC S9(m)V9(n) COMP FIXED BIN(15,n) (m+n <= 4 and n <= 4) (See NOTE) PIC S9(m)V9(n) COMP FIXED BIN(31,n) (m+n <= 9, n <= 4) PIC S9(m)V9(n) PIC '9(m)V9(n-1)T' (n <= 4) PIC S9(m)V9(n) LEADING PIC 'T9(m-1)V9(n)' (n <= 4) PIC S9(m)V9(n) PIC '9(m)V9(n)S' SIGN SEPARATE (n <= 4) PIC S9(m)V9(n) PIC 'S9(m)V9(n)' SIGN SEPARATE LEADING (n <= 4) Decimal PIC S9(m)V9(n) COMP-3 FIXED DEC(m+n,n) (m+n < 16) PIC S9(m)V9(n) COMP FIXED BIN(15,n) (m+n <= 5) (See NOTE) PIC S9(m)V9(n) COMP FIXED BIN(31,n) (m+n <= 9) PIC S9(m)V9(n) COMP Not Supported (m+n <= 18) PIC S9(m)V9(n) PIC '9(m)V9(n-1)T' PIC S9(m)V9(n) LEADING PIC 'T9(m-1)V9(n)' PIC S9(m)V9(n) PIC '9(m)V9(n)S' SIGN SEPARATE PIC S9(m)V9(n) PIC 'S9(m)V9(n)' SIGN SEPARATE LEADING Date PIC S9(7) COMP-3 FIXED DEC(7) date in YYYYDDD format PIC S9(7) COMP-3 FIXED DEC(7) time in HHMMSST format PIC S9(7) COMP-3 FIXED DEC(7) date in YYYYDDD format PIC S9(7) COMP-3 FIXED DEC(7) time in HHMMSST format String PIC X(n) CHAR(n) padded with spaces to n bytes PIC X(n) CHAR(n) padded with LOW-VALUE to n bytes Boolean PIC S9(4) COMP FIXED BIN(15) (1 = true, 0 = false) PIC S9(9) COMP FIXED BIN(31) (1 = true, 0 = false) PIC S9(n) COMP-3 FIXED DEC(n) (1 = true, 0 = false) Byte PIC X CHAR(1) (no translation performed) PIC 999 COMP FIXED BIN(15) (value between 0 and 255) PIC 999 COMP-3 FIXED DEC(3) (value between 0 and 255) NOTE: An appropriate COBOL compiler option must be set to allow numbers between 9,999 and 32,768 to fit in a PIC 9(4) COMP number. Additional query words: COBOL PL/1 PL/I PL1 PLI ====================================================================== Keywords : Technology : kbAudDeveloper kbCOMTISearch Version : WINDOWS:1.0,4.0 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. 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