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  • Book Overview & Buying SAP ABAP Advanced Cookbook
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SAP ABAP Advanced Cookbook

SAP ABAP Advanced Cookbook

By : Rehan Zaidi
4.9 (7)
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SAP ABAP Advanced Cookbook

SAP ABAP Advanced Cookbook

4.9 (7)
By: Rehan Zaidi

Overview of this book

ABAP (Advanced Business Application Programming) is SAP's proprietary 4th Generation Language (4GL). SAP core is written almost entirely in ABAP.ABAP is a high level programming language used in SAP for development and other customization processes."SAP ABAP Advanced Cookbook"ù covers advanced SAP programming applications with ABAP. It teaches you to enhance SAP applications by developing custom reports and interfaces with ABAP programming. This cookbook has quick and advanced real world recipes for programming ABAP.It begins with the applications of ABAP Objects and ALV tips and tricks. It then covers Design Patterns and Dynamic Programming in detail.You will also learn the usage of quality improvement tools such as transaction SAT, SQL Trace, and the Code Inspector.Simple transformations and its application in Excel Downloading will also be discussed, as well as the newest topics of Adobe Interactive Forms and the consumption and creation of Web services. The book comes to an end by covering advanced usage of Web Dynpro for ABAP and the latest advancement in Floorplan Manager.
Table of Contents (17 chapters)
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16
Index

Validation of format (telephone number)


In this recipe, we will see how to use the back-referencing operator in order to validate telephone numbers. Suppose telephone numbers in a certain city follow the rule: a number must be of exactly eight digits, and the first and second digit must be the same.

For example, the valid numbers of the city may be 44005600, 88008700, and so on. If the number entered starts with a zero or has length less than eight, an error should be displayed. We will see how a short validation program may be written.

How to do it...

For creating the program that checks the validity of a telephone number according to the given criteria, proceed as follows:

  1. Declare a parameter having the name tel_no with eight characters.

  2. We then use the find regex statement to search for the pattern ([1-9])\1[0-9]{6} in the telephone number entered by the user.

  3. The if statement is then used for checking the return code. For sy-subrc, having the value 0, the message Number is Valid is displayed...

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Tech Concepts
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Programming languages
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