Basic Mapping Support Day 2 Objectives Introduction to

Basic Mapping Support Day 2

Objectives • Introduction to BMS – Screen Layout – Physical map and Symbolic map – Map and Mapset • Creating a simple map – Map definition macros – Modified data tag and other attributes – Handling program attention keys • Programming to use maps – – SEND MAP command RECEIVE MAP command Data validation Changing the attributes dynamically Copyright © 2005, Infosys Technologies Ltd 2 ER/CORP/CRS/TP 01/003 Version No: 1. 0

BMS – Basic Mapping Support • An interface between CICS programs and the terminal devices • In BMS, the design and format of the application can be separate from the logic • BMS finds the device information from the terminal rather than the application program Copyright © 2005, Infosys Technologies Ltd 3 ER/CORP/CRS/TP 01/003 Version No: 1. 0

Formatted Screens • Screens with fields in proper positions with proper attributes. • Require Buffer Control Characters (BCCs) to be sent along with data. • The mixture of BCCs and TEXT is called as Native Mode Data Stream (NMDS) which depends on the protocol of the terminal being used. Copyright © 2005, Infosys Technologies Ltd 4 ER/CORP/CRS/TP 01/003 Version No: 1. 0

Formatted Screen - an Example SCR 1 MAIN MENU DATE: 04/03/98 TIME : 12: 14: 16 1. EMPLOYEE RECORD MAINTENANCE 2. EMPLOYEE DETAILS BROWSE 3. EXIT SELECTION : - (1/2/3) Your Choice Please F 1 - Help F 3 - Exit ENTER - Process Copyright © 2005, Infosys Technologies Ltd 5 ER/CORP/CRS/TP 01/003 Version No: 1. 0

Physical Maps • Physical map contains the display format for the map, for a given terminal, available as a load library member. – – Length and location Attributes Constants Device characteristics BMS macro coding Load module Assembly Linkedit LOADLIB To be used by CICS Copyright © 2005, Infosys Technologies Ltd 6 ER/CORP/CRS/TP 01/003 Version No: 1. 0

Symbolic Maps • Symbolic map contains all variable data which is copied into programs working storage section, available as copy library member. BMS macro coding COPYLIB Assembly Symbolic map generation Copied (COPY) into CICS appl. program Copyright © 2005, Infosys Technologies Ltd 7 ER/CORP/CRS/TP 01/003 Version No: 1. 0

MAP & MAPSET • MAP – is a single screen format • MAPSET – is a collection of maps link-edited together to create a load module. – should have a PPT entry. • Naming – 1 to 7 chars of generic name for maps and mapsets – 1 char added by CICS. Copyright © 2005, Infosys Technologies Ltd 8 ER/CORP/CRS/TP 01/003 Version No: 1. 0

BMS Assembly Language Program • BMS map is a program written in Assembly Language to manage screens. • The BMS Macros are – DFHMSD (Mapset definition) – DFHMDI (Map definition) – DFHMDF (Map Field definition) Copyright © 2005, Infosys Technologies Ltd 9 ER/CORP/CRS/TP 01/003 Version No: 1. 0

DFHMSD Parameters • • • TYPE=DSECT/MAP/&&SYSPARM/FINAL MODE=IN/OUT/INOUT LANG=ASM/COBOL/PL 1 STORAGE=AUTO/BASE=name CTRL=(PRINT, FREEKB, ALARM, FRSET) TERM=terminal type, SUFFIX=n TIOAPFX=YES/NO MAPATTS=(COLOR, HIGHLIGHT, . . . . ) DSATTS=(COLOR, HIGHLIGHT, . . . . ) – COLOR=DEFAULT/colour – HIGHLIGHT=OFF/BLINK/REVERSE/UNDERLINE Copyright © 2005, Infosys 10 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

Example of DFHMSD TYPE=&&SYSPARM, CTRL=(FREEKB, FRSET), LANG=COBOL, STORAGE=AUTO, TIOAPFX=YES, MODE=INOUT, TERM=3270 DFHMSD TYPE=FINAL END Copyright © 2005, Infosys 11 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0 X X X

DFHMDI Parameters • • SIZE=(LINE, COLUMN) LINE=line-number COLUMN=column-number JUSTIFY=left/right CTRL=(PRINT, FREEKB, ALARM, FRSET) TIOAPFX=YES/NO MAPATTS=(COLOR, HIGHLIGHT, . . . . ) DSATTS=(COLOR, HIGHLIGHT, . . . . ) – COLOR=DEFAULT/colour – HIGHLIGHT=OFF/BLINK/REVERSE/UNDERLINE Copyright © 2005, Infosys 12 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

Example of DFHMDI MAPNAME DFHMDI SIZE=(24, 80), LINE=01, COLUMN=01, CTRL=(FREEKB, FRSET) Copyright © 2005,

DFHMDF Parameters • • • POS=(line, column) LENGTH=number INITIAL=‘text’ JUSTIFY=(LEFT/RIGHT, BLANK/ZERO) ATTRB=(ASKIP/PROT/UNPROT, NUM, BRT/NORM/ DRK, IC, FSET) COLOR=DEFAULT/colour HIGHLIGHT=OFF/BLINK/REVERSE/UNDERLINE PICIN=‘value’ PICOUT=‘value’ OCCURS=n Copyright © 2005, Infosys 14 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

Example of DFHMDF POS=(01, 01), LENGTH=4, INITIAL=‘SCR 1’, ATTRB=(PROT, NORM) DATEM DFHMDF POS=(01, 70), LENGTH=08, ATTRB=(PROT, NORM) DFHMDF POS=(01, 79), LENGTH=1, ATTRB=ASKIP Copyright © 2005, Infosys 15 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0 X X

MDT - Modified Data Tag • It is used to know whether the field is modified by the user or not. The field is only receivable if it has been modified. Copyright © 2005, Infosys 16 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

FORMAT OF SYMBOLIC MAP • A 12 -byte TIOA (Terminal Input/Output Area) prefix. • The mapnames are suffixed with ‘I’ and ‘O’ • When performing INPUT functions fields suffixed with ‘L’, ’F’ and ‘I’ are meaningful • When performing OUTPUT functions fields suffixed with ‘A’, and ‘O’ are meaningful Copyright © 2005, Infosys 17 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

Using OCCURS clause • It is a tedious task to define different field names in a listing which are same and access them. • To overcome this you use the OCCURS clause in the field and you can address the field by using the subscript. Copyright © 2005, Infosys 18 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

SEND MAP EXEC CICS SEND MAP(‘map name’) [MAPSET(‘mapset name’)] [FROM(data-area)] [LENGTH(data_value)] [DATAONLY] [MAPONLY] [CURSOR] [ERASE/ERASEAUP] [FREEKB] [FRSET] END-EXEC Copyright © 2005, Infosys 19 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

SEND MAP Ex. EXEC CICS SEND MAP(‘EMPMAP’) MAPSET(‘EMPLIST’) ERASE FREEKB END-EXEC Copyright © 2005,

RECEIVE MAP EXEC CICS RECEIVE MAP(‘map name’) [MAPSET(‘mapset name’)] [INTO(data-area)] [FROM(data-area)] [LENGTH(data_value)] END-EXEC Copyright © 2005, Infosys 21 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

RECEIVE MAP Ex. EXEC CICS RECEIVE MAP(‘EMPMAP’) MAPSET(‘EMPLIST’)] END-EXEC Copyright © 2005, Infosys 22

Validate Fields • Fields can be evaluated using the L, F or the I sub-fields • The key pressed by the user is evaluated by using EIBAID • CICS provides you with a pre-coded set which holds the symbolic values of attention identifier – COPY DFHAID (DFHENTER, DFHCLEAR, DFHPF 1 etc) Copyright © 2005, Infosys 23 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

Dynamic Cursor positioning. • Move -1 to the symbolic map variable suffixed with L. • Send the map with a CURSOR option in SEND MAP. Copyright © 2005, Infosys 24 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

Dynamically changing attributes. • COPY DFHATTR in your program. • Choose the attribute from the list you want to use and move it to the symbolic field variable suffixed with ‘A’. • You can also do it by copying DFHBMSCA having different options. Copyright © 2005, Infosys 25 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

DFHBMSCA attribute values Variable Protection Intensity DFHBMUNP DFHBMUNN DFHBMPRO DFHBMASK DFHBMBRY DFHPROTI DFHBMASB DFHBMDAR DFHPROTN DFHBMFSE DFHUNNUM DFHBMPRF DFHBMASF DFHUNIMD DFHUNINT DFHUNNOD DFHUNNON Unprotected Numeric Protected Autoskip Unprotected Protected Unprotected Numeric Protected Autoskip Unprotected Numeric Normal Bright Non-display Normal Bright Non-display Copyright © 2005, Infosys 26 Technologies Ltd Modified Data Tag (FSET/FRSET) Off Off Off On On ER/CORP/CRS/TP 01/003 Version No: 1. 0

Sample mapset Development Step 1: Open a tso session. Step 2: Create a new PDS. Step 3: Code the following mapset in a new member. Copyright © 2005, Infosys 27 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

Sample mapset Development Step 4: Assemble the mapset using the clist TRNGBMS. Step 5: Open a CICS Session. Step 6: Install the program using the command CEMT SET PROG(mapset-name) NEW Copyright © 2005, Infosys 28 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

Execution of the sample mapset Step 1: Open Client session for Mainframe, type CICS 3 and hit ENTER key. Enter your User id and Password and press the Enter Key. Copyright © 2005, Infosys 29 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0

Execution of the sample mapset Step 2: Type the command CECI SEND MAP(map-name) MAPSET(mapset-name)

Summary • What is a BMS? • What are the two kinds of maps? Why do we need them? • What are the macros used to define? • What is MDT, FSET and FRSET? • What are the symbolic map fields generated? • How to detect the key pressed? • How to dynamically change the attributes of the fields? • Sample Mapset development Copyright © 2005, Infosys 31 Technologies Ltd ER/CORP/CRS/TP 01/003 Version No: 1. 0