Java and BAPI Technology for SAP (Prima Tech's SAP Book Series)

412 Pages·2000·5.29 MB·English

by  Gareth M. deBruyn

http://sap.3dn.ru
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BBaacckkCCoovveerr 22
JJaavvaa && BBAAPPII TTeecchhnnoollooggyy ffoorr SSAAPP 33
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SSuummmmaarryy 1166
CChhaapptteerr 22:: SSAAPP AAuuttoommaattiioonn AArrcchhiitteeccttuurree 1177
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SAP Automation Setup 46
Summary 57
Chapter 5: A Few Simple Java/SAP Examples 58
Simple Ping of an R/3 System 59
Simple Material Data Retrieval 66
Applet Example 71
Summary 73
Chapter 6: Object-Oriented Programming Concepts 74
Definition of an Object 75
Classes 77
Inheritance 80
Summary 82
Chapter 7: The Basics of the Java Language 83
Variables, Data Types, and Declarations 84
Operators 86
Strings and Arrays 89
Literals 92
Comments 94
Control Flow Statements 95
Summary 101
Chapter 8: Objects, Classes, and Interfaces 102
Creating and Using Objects 103
Creating and Using Classes 106
Creating and Using Interfaces and Packages 113
Summary 115
Chapter 9: Building Simple User Interfaces 116
The Abstract Windowing Toolkit 117
Summary 139
Chapter 10: JavaBeans, ActiveX, Applets, and the Internet 140
Java Streams 141
Using Java and the Internet 143
Sockets 146
The Difference between an Application and an Applet 150
Creating and Using Applets 151
What Is a JavaBean? 156
Comparison of ActiveX and JavaBeans 157
Summary 158
Part II: Using Java with SAP 159
Chapter 11: Integrating Java with SAP through RFCs and BAPIs 160
Initialization to the Middleware 161
Connecting to the SAP System 163
The Basics of the BAPI Call 171
Summary 174
Chapter 12: SAP's Business Object Repository 175
Introduction to Business Objects 176
Navigation through the BOR 179
Key Information in the BOR for the Use of BAPIs 181
Finding Usable Function Modules Outside the BOR 182
ActiveX Controls and the Business Object Broker 184
Summary 185
Chapter 13: Building a More Advanced User Interface 186
Abstract Windowing Toolkit 187
The Swing Classes 189
Swing Components 192
Summary 198
Chapter 14: SAP Assistant 199
Internal Components of SAP Assistant 200
Configuring SAP Assistant 201
The SAP Assistant Screen 203
Browsing on BAPIs and RFCs 204
Working on Multiple Windows through SAP Assistant 205
SAP Assistant Searching Tool 206
SAP Assistant Table Browser 207
Downloading BAPIs or RFCs to Excel 208
Local Repository 209
Reading from a Local Repository 210
Making a Remote Function Call 211
Tracing Errors in SAP Assistant 212
Summary 213
Chapter 15: Internet Transaction Server 214
Why Use ITS? 215
Basics of ITS 216
Internet Applications Components 218
Development Environment 224
Summary 226
Chapter 16: Deciding Which Technology to Use for a New Application 227
Evaluation of Application Requirements 228
GUI-Based Object-Oriented Solutions 230
RFC/BAPI-Based Java 231
Internet Transaction Server 233
Other Object-Oriented Languages 234
ABAP 235
Integrating SAP with Other Software 236
Summary 237
Chapter 17: Design Considerations for HTML/RFC-Based SAP Interfaces 238
Browser Independence 239
Security 241
Creating User-Friendly Web Interfaces 242
Languages, Currency, and Units of Measure 243
SAP Transaction Concept and Security 245
Summary 246
Chapter 18: BAPI Development 247
The Relationship between BAPIs and the BOR 248
Standards for BAPIs 249
Design of BAPIs 252
Connecting the BAPI to the BOR 256
RFCDES Definition 257
Outbound BAPIs 259
Summary 260
PART III: Details on Java RFC and BAPI Connections 261
Chapter 19: The COM.SAP.RFC Package 262
Class Hierarchy 263
Class Descriptions 264
Interface Hierarchy 268
Interface Descriptions 269
Summary 277
Chapter 20: The COM.SAP.RFC.EXCEPTION Package 278
Class Hierarchy 279
JRfcBaseException 280
JRfcBaseRuntimeException 282
JRfcRemoteOutOfMemoryError 284
Summary 285
Chapter 21: BAPI Collection 286
CCMS 287
Financial Accounting 289
Human Resources 298
Logistics 308
Basis/CA 316
Part IV: Appendixes 321
Appendix A: Other Web Resources 322
Resources for Java/HTML/XML 324
Appendix B: Basic HTML Reference 325
HTML Document Structure 326
Head Elements 327
Body Element Attributes 329
Body Elements 330
Frames 336
URLS 338
Special Characters 339
Sample HTML Document 340
Appendix C: ABAP/4 Data Types to Java Cross-Reference 342
Appendix D: Using Sun's Java Compiler 343
Sun's Java History 344
Installing the Java 2 SDK 345
“Hello World” Example 350
Components of the Java 2 SDK 351
Glossary 357
Index 360
Index_B 363
Index_C 365
Index_D 369
Index_E 370
Index_F 371
Index_G 372
Index_H 373
Index_I 374
Index_J 376
Index_K 379
Index_L 380
Index_M 381
Index_N 383
Index_O 384
Index_P 386
Index_Q 387
Index_R 388
Index_S 390
Index_T 394
Index_U 395
Index_V 396
Index_W 398
Index_X 399
List of Figures 400
List of Tables 405
List of Sidebars 406
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Java & BAPI Technology for SAP
by Ken Kroes and Anil Thakur ISBN:0761523057
Premier Press © 2000 (432 pages)
Learn Java and how to integrate it into an SAP project.

Table of Contents
Java & BAPI Technology for SAP
Introduction
Part I - The Basics
Chapter 1 - The Roles of Java in the ERP Industry
Chapter 2 - SAP Automation Architecture
Chapter 3 - VisualAge for Java
Chapter 4 - Setting up the Development and Operating Environments
Chapter 5 - A Few Simple Java/SAP Examples
Chapter 6 - Object-Oriented Programming Concepts
Chapter 7 - The Basics of the Java Language
Chapter 8 - Objects, Classes, and Interfaces
Chapter 9 - Building Simple User Interfaces
Chapter 10 - JavaBeans, ActiveX, Applets, and the Internet
Part II - Using Java with SAP
Chapter 11 - Integrating Java with SAP through RFCs and BAPIs
Chapter 12 - SAP’s Business Object Repository
Chapter 13 - Building a More Advanced User Interface
Chapter 14 - SAP Assistant
Chapter 15 - Internet Transaction Server
Chapter 16 - Deciding Which Technology to Use for a New Application
Chapter 17 - Design Considerations for HTML/RFC-Based SAP Interfaces
Chapter 18 - BAPI Development
PART III - Details on Java RFC and BAPI Connections
Chapter 19 - The COM.SAP.RFC Package
Chapter 20 - The COM.SAP.RFC.EXCEPTION Package
Chapter 21 - BAPI Collection
Part IV - Appendixes
Appendix A - Other Web Resources
Appendix B - Basic HTML Reference
Appendix C - ABAP/4 Data Types to Java Cross-Reference
Appendix D - Using Sun’s Java Compiler
Glossary
Index
List of Figures
List of Tables
List of Sidebars
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Back Cover
Draw from the authors' years of experience with SAP implementations. Follow along and learn how platform
independent Java can reduce both development and on-going maintenence costs for custom software. Learn how to
integrate Java with SAP, and the basics of integrating the SAP Automation toolkit to develop applets or Java
applications.
Begin with Java basics and learn the role Java plays in the ERP industry. Next move on to integrating Java with SAP.
Benefit from practical examples which allow you to see how Java and SAP can be used together. Finally, continue on to
BAPIs: what are they, how to find them within SAP, and how to build your own custom BAPIs.
Follow along and benefit from the book's extensive collection of screen images and code examples. Use the step-by-
step examples to reproduce results and understand the concepts discussed in this introduction to Java programming
within SAP.
About the Authors
Ken Kroes is an SAP consultant with over 15 years' programming and consulting experience. He specializes in
implementing SAP for clients with build-to-order products and Internet applications for SAP. He has published articles
including "Advanced ABAP Programming" and "Learning How to be an SAP Consultant" and authored the Dr. ABAP
column in SAP Technical Journal.
Anil Thakur operates a boutique consulting firm specializing in Web-enabling ERP Implementation. He has worked as a
senior consultant, offering ERP and E-commerce expertise to Fortune 500 companies such as Kodak and Hewlett
Packard. In addition, he performs independent code reviews and makes technical presentation at various client sites.

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Java & BAPI Technology for SAP
Ken Kroes with Anil Thakur
A Division of Prima Publishing
© 2000 by Prima Publishing. All rights reserved. No part of this book may be reproduced or transmitted in any
form or by any means, electronic or mechanical, including photocopying, recording, or by any information
storage or retrieval system without written permission from Prima Publishing, except for the inclusion of brief
quotations in a review.
A Division of Prima Publishing
Prima Publishing and colophon are registered trademarks of Prima Communications, Inc. PRIMA TECH is a
trademark of Prima Communications, Inc., Roseville, California 95661.
SAP, R/3, and BAPI are either registered trademarks or trademarks of SAP Aktiengesellschaft, Systems,
Applications and Products in Data Processing, Neurottstrasse 16, 69190 Walldorf, Germany. SAP is not the
publisher of this book and is not responsible for it under any aspect of press law.
Java and JavaBeans are trademarks of Sun Microsystems, Inc.
Microsoft, Windows, Windows NT, ActiveX, and Visual Basic are registered trademarks of Microsoft
Corporation.
Important: Prima Publishing cannot provide software support. Please contact the appropriate software
manufacturer's technical support line or Web site for assistance.
Prima Publishing and the author have attempted throughout this book to distinguish proprietary trademarks
from descriptive terms by following the capitalization style used by the manufacturer.
Information contained in this book has been obtained by Prima Publishing from sources believed to be reliable.
However, because of the possibility of human or mechanical error by our sources, Prima Publishing, or others,
the Publisher does not guarantee the accuracy, adequacy, or completeness of any information and is not
responsible for any errors or omissions or the results obtained from use of such information. Readers should be
particularly aware of the fact that the Internet is an ever-changing entity. Some facts may have changed since
this book went to press.
ISBN: 0-7615-2305-7
Library of Congress Catalog Card Number: 99-64788
Printed in the United States of America
00 01 02 03 04 DD 10 9 8 7 6 5 4 3 2 1
Publisher: Stacy L. Hiquet
Marketing Manager: Judi Taylor
Associate Marketing Manager: Heather Buzzingham
Managing Editor: Sandy Doell
Acquisitions Editor: Jawahara Saidullah
Senior Editor: Kim V. Benbow
Project Editor: Estelle Manticas
Editorial Assistant: Cathleen D. Snyder
Technical Reviewer: Anil Thakur
Copy Editor: June Waldman
Interior Layout: Marian Hartsough
Cover Design: Prima Design Team
Indexer: Johnna VanHoose
To my wife Donna and children Megan and Jarid; thanks for your support over the past several months.
-KK
Acknowledgments
The authors wish to acknowledge and thank Matt Carleson and Stacy Hiquet for their continued support and
vision throughout the development of this book and the entire SAP series, and Jawahara Saidullah, Estelle
Manticas, and Cathleen Snyder, for their patience and moral support throughout the writing process.
Finally, the authors wish to thank SAP America.
About the Authors
Ken Kroes has over 17 years of programming and consulting experience and has worked as an independent
SAP consultant in both R/2 and R/3 for many large clients. Since completing his engineering degree at the
University of Calgary, Canada, Ken has worked in a variety of business areas and is currently specializing in
implementing SAP for clients with build-to-order (configurable) products and Internet applications. Contact Ken
at [email protected].
Anil Thakur operates a boutique consulting firm specializing in Web-enabling ERP Implementation. He has
worked as a senior consultant offering ERP and E-commerce expertise to Fortune 500 companies such as
Kodak and Hewlett-Packard. In addition, he performs independent code reviews, writes white papers on
integrating SAP to E-commerce environments, and makes technical presentations at various client sites.

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