MIS 3020 - ABAP Programming Lecture 1 Introduction to the ABAP Workbench

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  • Slide 1
  • MIS 3020 - ABAP Programming Lecture 1 Introduction to the ABAP Workbench
  • Slide 2
  • Objectives to introduce the ABAP integrated development environment the two main ABAP application types reporting dialog programming
  • Slide 3
  • Order of Presentation Purpose and Function of the ABAP Workbench Workbench Tools: Object Navigator (Repository Browser) The ABAP Language The Repository Information System Test and Analysis Tools Menu & Screen Painter The Data Modeler ABAP Query The Workbench Organizer The Class Builder
  • Slide 4
  • ABAP Workbench Purpose & Function SAPs Integrated Graphical Programming Development Environment: Used to create/change ABAP application programs Each ABAP application program is either a report or a transaction: Reports are applications that retrieve and display information from database with little or no user interaction Transactions accepts inputs/data from users and then perform one or more relevant actions, usually involving updating databases
  • Slide 5
  • ABAP Workbench Purpose & Function The Workbench can be used to write ABAP code design dialogs/screens with a graphical editor create menus with a menu editor debug an application test an application for efficiency control access to objects under development create new or access predefined database information
  • Slide 6
  • ABAP Workbench Purpose & Function Comprises the following tools The Object Navigator (aka Repository Browser) the ABAP Language the Screen and Menu Painters the Repository Information System the Data Modeler various test and analysis tools the ABAP Query the Workbench Organizer
  • Slide 7
  • R/3 Repository ABAP Processor Debugging Trace Test Tuning Reporting Screen Painter Function Modules ABAP Organizer Transport System Menu Painter Data Modeler ABAP Dictionary ABAP Editor ABAP Workbench Architecture
  • Slide 8
  • The Workbench Screen All R/3 screens have a similar look and feel screens consist of screen titlebar menu bar standard toolbar application toolbar screen body message line
  • Slide 9
  • Menubar Standard toolbar Application toolbar Message line ClientServer Screen title-bar
  • Slide 10
  • The Object Navigator (The Repository Browser) central tool for organizing and managing your personal development objects used to navigate through development object lists where development objects are the components used to construct an application automatically calls other workbench tools if you create a new data definition the browser calls the Data Dictionary, and then returns to the browser after the definition is created
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  • The ABAP Language Advanced Business Application Programming developed by SAP for the interactive development of application programs 4th Generation Language (with some OO features) main uses for ABAP programs include creation of new reports development of new user dialog programs (transactions) customisation of R/3 to meet individual client needs
  • Slide 13
  • Reporting uses ABAP Open SQL to extract data from the R/3 database Open SQL is a subset of ANSI SQL report consists of a [selection screen] and a list screen selection screen allows the user to enter selection criteria list screen displays the report data
  • Slide 14
  • Selection Screen List Screen ABAP Open SQL Report R/3 Database
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  • Dialog Programming Dialog Programs (Transactions) are used for both reading and changing the database Main Components of a Dialog Program are screen & menus processing logic defined in an ABAP program (module pool) for each screen, interaction and control flow from one module to another is defined in DYNPRO data structures defined in the ABAP dictionary
  • Slide 19
  • Development Environment ABAP Dictionary Screen Painter ABAP Menu Painter Runtime Environment Dialog Processor ABAP Processor
  • Slide 20
  • Dialog Programming - Overview Transaction Code Module Pool 0100 0200 0300 Screen Flow Logic
  • Slide 21
  • PROCESS BEFORE OUTPUT. MODULE INITIALISE. PROCESS AFTER INPUT. MODULE READ-ITAB. MODULE.... MODULE INITIALISE Clear ITAB. ENDMODULE. MODULE READ-ITAB. Select * From ITAB Where... ENDMODULE. MODULE...... : ENDMODULE. DIALOG Communication ABAP 1 2 3 4
  • Slide 22
  • Graphical Elements Toolbar Currently Edited Field Graphical Screen Painter
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  • Menu Painter
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  • The Repository Information System The Repository Information System is used to search for objects in the R/3 system and provides list of all objects X with attribute/s Y the Where Used List which gives a list of every place that object X is used throughout the R/3 system information about foreign key relationships between tables display of data (all records in table X with attribute Y)
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  • Test and Analysis Tools ABAP Editor syntax checker tests for coding and syntactical correctness provides automatic correct facility in case of an error, provides a detailed (although sometimes obscure) reason for the error extended syntax check searches out situations that might possibly result in a runtime error (eg, inconsistent interface parameters) warns about use of literals instead of text elements
  • Slide 27
  • Test and Analysis Tools Debugger finds logic errors provides ability to stop the program anywhere during runtime continue statement by statement skip over subroutines check or change the contents of variables and internal tables on the fly
  • Slide 28
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  • Test and Analysis Tools Runtime analysis used to determine the performance, (absolute and relative) of the various parts of an ABAP program can provide statistics on the efficiency of code database accesses R/3 system itself
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  • The Data Modeler graphical tool that utilises E-R modelling tightly coupled to the data dictionary possible to click on an object in the model (ie, an entity), and retrieve related data from the dictionary, (ie table - structure, contents) create the data model and the dictionary can create the table automatically
  • Slide 33
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  • ABAP Query Automated report generator user not required to know ABAP language can generate basic lists, statistics, ranked lists To define a report enter individual texts, such as titles select the fields and options which determine the report layout assign a particular sequence by numbering the fields. The system generates each query in the form of an ABAP program.
  • Slide 35
  • Workbench Organizer records and controls changes to objects ABAP Programs, Dictionary Objects, Screens, User Interface Definitions, provides assistance for organizing development projects by allowing you to distribute project work for individual developers or teams among different change requests
  • Slide 36
  • Workbench Organizer interface to the Transport mechanism movement of applications from development test production environments prevents parallel, uncoordinated changes to the same object, (version control) even when many copies of the object exist in several, connected SAP systems
  • Slide 37
  • Summary & Conclusion this lecture provided an overview of the tools that comprise the ABAP Development Workbench of these the editor /syntax checker/debugger is the combination that we will use most frequently it is essential that you be able to use the tools to navigate around the workbench find,execute,change development objects
  • Slide 38
  • Related Reading OnLine Help R/3 Library... Basis Components... ABAP Workbench BC ABAP Users Guide ABAP Basics Overview of the Components of Application Programs ABAP Workbench Tools
  • Slide 39
  • Recommended ABAP Texts ABAP/4: Programming the SAP R/3 System, Bernd Matzke Developing SAPs R/3 applications with ABAP/4, Rudiger Kretschmer, and Wolfgang Weiss Introduction to ABAP/4 Programming for SAP, Revised and Expanded Edition by Gareth M. De Bruyn, Robert Lyfareff