 SAP AG CSU Chico MINS298c ABAP/4 Programming Gail Corbitt Fall 1998 Chapter 1-3

 SAP AG CSU Chico Chapters 1-3 Some Key Features Repository Concept (development workbench) Beginning Program

 SAP AG CSU Chico Key Features Advanced Business Application Program Multi language Interpretive Language Event Driven Reusability Data Objects Subroutines (which are called ??? in ABAP)

 SAP AG CSU Chico Multi-Language Documentation Titles & Headers Text Symbols Selection Text Text Fields Message Texts

 SAP AG CSU Chico Re-usability Patterns Subroutines Data Objects Structures

 SAP AG CSU Chico Repository Concept Data Models Dictionary Types Table Structures Programs Screens Functions Patterns More... Developers Users

 SAP AG CSU Chico Repository Concept Developer Group 1 Users Developer Group 2

 SAP AG CSU Chico Program A Program has: Source code Text elements  title  selection text  text symbols Variants Attribute Documentation

 SAP AG CSU Chico A Program Source Code Type Title Status Application Dev. Class Repository Attributes Variants Text elements

 SAP AG CSU Chico Attributes (For now) Program Name Convention ZZ##EX** ## is your assigned number ** is assignment number Program Type 1 (one) : Interactive Development Class $TMP Local Object

 SAP AG CSU Chico Editor for Source Code Two ways to get there editor Object Browser Three editor modes command pc pc with line numbering

 SAP AG CSU Chico Basic Language Constructs Reserved or Key words such as MOVE, WRITE, DATA Elementary Data Types: Character -- CFloating Point -- F Integer -- INumeric Text -- N Date -- DPacked Decimal -- P Time -- THexadecimal -- X Construction Concept Record - fixed number of related fields/data objects Internal Table - variable number of related records

 SAP AG CSU Chico Basic Language Constructs Cont Non-Elementary Data Types (User Defined) Example: Types t_phone (20) type C. Data customer_phone type t-phone. Data Object: (not defined explicitly) attributes and entities References: uses key word LIKE copies attributes of one data object into another

 SAP AG CSU Chico Basic Syntax for Source Code Statements not case sensitive Keyword + series of space delimited words ends with period can span multiple lines Literals are identified between single quotes Comments * in first column of line inline after double quote

 SAP AG CSU Chico Basic Syntax for Source Code Colon notation implies “repeat verb/ABAP reserved word” Example 1: Write var-1. Write var-2. Write var-3. Write: var-1, var-2, var-3. Example 2: Write ‘The answer is: ‘. Write var-1. Write: ‘The answer is: ‘, var-1.

 SAP AG CSU Chico Some Verbs REPORT program name REPORT ZZ99DB01 DATA var(length) TYPE Curr_date(20) TYPE C Curr_date LIKE sy-datum Assignment MOVE ‘XYZ’ to Curr_date. Curr_date = ‘XYZ’. Write WRITE / column position(length) dataname

 SAP AG CSU Chico Basic Compile Environment Check = Syntax check Save = records current version of source code Generate = Compiles and generates object code Execute (does NOT save) = Runs or if does not exist generates and runs Drill Down X Y Z editor buffers Help

 SAP AG CSU Chico Assignment #1 Create a program to display the following information on the screen when executed Current Date Current Time Client Number Username Language Key System ID R/3 Release Database System Operating System >>> 1 item per line <<<

 SAP AG CSU Chico Assignment #2 Copy the program ZZ99DB01 (Debug 01) to your own program name. Edit and fix the compile error(s). Include the PATTERN DEMO_PATTERN in the program. Change the title to include your name