Advanced Techniques for Java Developers

SAP Interface Programming: A comprehensive reference for RFC, BAPIs, ActiveX and JCo programming.Techniques: tRFC, qRFC, and parallel processing [Gebundene Ausgabe] tools error diagnosis developers Business Objects Java Connector troubleshooting Johannes Meiners Wilhelm Nüßer With a strong focus on the RFC Library, this book gives beginners a first-hand introduction to basic concepts, and highlights key tools in the ABAP Workbench. Actual programming examples help to illustrate client-server architecture, and show you how to assess the appropriate tools for error diagnosis, troubleshooting and more. Experienced SAP developers can dive right into comprehensive chapters on programming the RFC interface, and advanced techniques such as tRFC, qRFC, and parallel processing. Extensive coverage of BAPIs, ActiveX, JCo and highly-detailed programming examples serve to round out this exceptional resource. Highlights include- ABAP Workbench tools - Developing client/server applications - In-depth

Hardcover. Zustand: gut. Auflage: 1 (September 2004). With a strong focus on the RFC Library, this book gives beginners a first-hand introduction to basic concepts, and highlights key tools in the ABAP Workbench. Actual programming examples help to illustrate client-server architecture, and show you how to assess the appropriate tools for error diagnosis, troubleshooting and more. Experienced SAP developers can dive right into comprehensive chapters on programming the RFC interface, and advanced techniques such as tRFC, qRFC, and parallel processing. Extensive coverage of BAPIs, ActiveX, JCo and highly-detailed programming examples serve to round out this exceptional resource. Highlights include- ABAP Workbench tools - Developing client/server applications - In-depth guidance on the RFC Library - tRFC, qRFC, and parallel processing - RFC Troubleshooting - Business Objects, BAPIs, and ActiveX - Java Connector (JCo) Synopsis Deals with computers/software. 1-59229-034-5 / 1592290345 ISBN-13 978-1-59229-034-5 / 9781592290345 Introduction 1. The Basics of R/3 System Architecture The Application Server The Dialog Process The Update Task The Enqueue Process The Gateway Server Distributed Load Systems and the Message Server The RFC Interface Within the R/3 System 2. The Basics of the ABAP Programming Language The ABAP Development Environment Creating Database Tables The Data Dictionary Relationships Between Domains, Data Elements, and Tables Create a Domain Create a Data Element Create a Transparent Table Maintaining Data Records Using the Data Browser A Simple Program ABAP Data Types and Variable Declaration Elementary Programming Statements in ABAP Value Assignments Branches Loops Access to Internal Tables Access to Database Tables Configuration of Selection Screens Creating Function Modules Coding Conventions in This Book 3. Introduction to Programming with the RFC API The Task for the First Example Programming the SAP Function Modules Programming the Client The Configuration of the main() Function Open a Connection to the R/3 System Calling Up Function Modules in the R/3 System Frequent Errors on the Client Side Overview of the Functions and Structures Used From an RFC Function Call to the Function Module Programming the External Server Configuring the main() Function for an External Server Open a Connection with the R/3 System Implementing the Message Loop Implementing the Server Services Setting Up the Connection to the R/3 System Programming the ABAP Client Frequent Errors on the Server Side Functions Used 4. The Basics of RFC Programming Type Mapping and Data Aggregates Generic Data Types The Character Data Types Numeric Strings The Case of Packed Numbers Final Overview of Type Mapping Working with Structures Working with Internal Tables Creating an Internal Table in an External Program Administration of Data Records in an Internal Table Reading and Writing Data Records in an Internal Table Overview of the Functions for Internal Tables The Message Loop Alternatives for Logging on to an R/3 System Working With a Configuration File Working with Load Balancing Working with the RfcOpen Function 5. Troubleshooting The ABAP Debugger The BREAK Statement The Gateway Monitor The RFC Trace Structure of the Trace File for an External Client Structure of the Trace File for an External Server Traces Using Transaction ST05 The RFC Generator Structure of the Client Program Generated Structure of the Server Program Generated Macros for Setting and Reading Values SAP Test Programs 6. Advanced Techniques Return Calls from the Server Automatic Creation of a Structure Description Transactional Remote Function Calls The R/3 System as tRFC Client Programming a Transactional RFC Server Transactional RFC Client Queue RFCs Administration of qRFCs in the R/3 System Developing a qRFC Client in the R/3 System Developing an External qRFC Client tRFC and qRFC Calls Conclusion Error Messages from an External Server Error Messages from a Synchronous Server Error Messages from the tRFC and qRFC Servers Parallel Processing Multitasking and Multithreading Creating and Exiting Threads The Basics of Synchronization Synchronization Objects Advantages of Parallel Processing in RFC Programming Implementing Parallel Processing in External Servers 7. The Business Object Business Object Close to the Object Structure of the Business Object The Structure of the Business Object Builder Creating the Object Key Methods of the Business Object Instance-Dependent Methods Implementation of Methods Using ABAP Program Forms Creating a Method Object Release and the Business Object Repository Guidelines for Developing API Methods Possibilities for Activation 8. Calling BAPIs from Clients What Are COM and ActiveX? What Is Your Name? or an Introduction to the Use of ActiveX Controls The SAP BAPI Control Opening a Connection with the R/3 System Calling the Business Object Method What Is a BAPI Proxy Object Anyway? Naming Conventions During Programming Wrapping the BAPI Proxy Object A Better Method for Setting Up a Connection to the R/3 System Integrating the Logon Control into the Client Events of the SAPLogonControl Class Recognizing a Disconnection Concepts for Creating Data Aggregates The SAP TableFactory Control in Detail Administering Structures with the SAP TableFactory Control Accessing Data in Structures Note When Working with Structures! Working with Tables The Class Hierarchy for Working with Tables Important Attributes of the Table Class Structure of the Example Programs Reading Data Records in a Table Changing Data Records Alternatives for Creating the Field Description Visualization of the Table Contents Hierarchy of the Classes of the TableView Control Specifying the Layout of the Data Grid Accessing the Cells in a Data Grid Specifying the Data Source for the Data Grid Concepts for Inserting and Deleting Rows and Columns Working with the Clipboard 9. SAP and Java The SAP Java Connector Basics of the JCo Ways of Using the JCo The JCo Package JCo Releases Using the JCo Basic Structure o. Artikel-Nr. BN2064

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