Java Programming with SAP NetWeaver

Alfred Barzewski joined SAP in 1997 as a member of the Product Management group for ABAP Workbench. Initially, he was responsible for Information Development in various areas of the SAP technology. These areas included Remote Communication, Non-SAP Accesses using BAPIs, RFC Programming, and ABAP Development. Most recently, he has focused on Java technologies in the environment of the SAP NetWeaver Application Server. Alfred publishes articles about Java Programming with SAP NetWeaver on a regular basis. Carsten Boennen received his M.A. in Computerlinguistics and Artificial Intelligence in Germany in 2001. He has been with SAP since then. Starting as a Java developer and trainer he later worked as a consultant. By the end of 2002 he became a Product Manager for the SAP NetWeaver Portal. In 2003 he then was introduced to a new tool called "GUI Machine". He took over Product Management responsibility for this new product which should become famous as Visual Composer later on. Today Carsten is a director of SAP NetWeaver Gateway product management. Wolf Hengevoss graduated in natural sciences from the University of Kaiserslautern. In 1999, he joined SAP as a member of the product management. He has worked in the Basis group focusing on topics such as Computer-Aided Test Tool and Business Address Services. Since the early stages of SAP Exchange Infrastructure, he has been working on the Java environment. In the following he moved to the area of the SAP NetWeaver Development Infrastrucure. Today, his focus is on the roll-out of the SAP NetWeaver System Landscape Directory and on the implementation of elements of the system landscape in general. Karl Kessler came to SAP in 1992 as a computer scientist. After his initial experience with the modeling of the Basis technology, he switched to Product Management for ABAP Workbench, where he was responsible for the rollout of SAP technology at various conferences. In 2003, he assumed responsibility for Production Management of the SAP NetWeaver Technology Infrastructure, with a focus on SAP NetWeaver Application Server Java and ABAP. Today, he focuses on how SAP NetWeaver builds the foundation for SAP ERP and the SAP Business Suite. Markus Kufer studied Medical Information Technology at the University of Heidelberg. In 2000, he joined SAP. He was responsible for the JDO server integration and represented SAP AG in the expert group for the JDO specification (JSR 243). Markus participated in patents for JDO und EJB 3.0 and has influenced the design of SAP's EJB 3.0 implementation. Today, he is a solution architect of the Global Ecosystem and Partner Group and leads projects in the area of enterprise SOA and SAP NetWeaver Composition Environment at the interface between SAP development and partners. Anne Lanfermann joined SAP AG in 1992 as an instructor in the training department. Since 1996, she has been a member of the Product Management team focusing on documentation and knowledge transfer. Her area of expertise is Process Integration and Enterprise Services. Miroslav Petrov studied Information Technology at the University of Sofia, Bulgaria. In 2000, he began working at SAP Labs Bulgaria. Since 2001, Miroslav has led a development team in the area Java Administration and Monitoring. He is also a development architect in the area of SAP NetWeaver Lifecycle Management. Susanne Rothaug joined SAP AG in 2001 as a member of the SAP NetWeaver Product Management team responsible for e-learning in the Web services area. During the last four years, Susanne worked as a Product Manager for Web services und Enterprise Service-Oriented Architecture. Dr.-Ing. Oliver Stiefbold studied Engineering at the University of Stuttgart and received a Ph.D. at the University of Karlsruhe. In 1998, he started his career with SAP AG in the development area of ERP Manufacturing. Afterwards, he worked for three years as a consultant for Internet solutions. Since 2001, he has been a member of Product Management for the Java development environment of the SAP NetWeaver Portal. In 2006, he turned his focus onto SAP NetWeaver Java EE Server and the SAP NetWeaver Developer Studio. Volker Stiehl studied Computer Sciences at the Friedrich-Alexander-University Erlangen-Nuremberg, Germany. When he joined SAP in 2004, his primary focus was on presales activities involving the Java EE stack of the SAP Web Application Server. In summer 2005, he joined the product management team of the Composite Application Framework where he was responsible for preparing specifications for composite applications development. With the introduction of SAP NetWeaver CE, his area of responsibility was extended to include the design of composite application architectures and their implementation using composition tools, such as the Composite Application Framework, Guided Procedures framework, or the SAP NetWeaver Visual Composer. Volker Stiehl speaks regularly at various conferences, such as SAP TechEd, SAPPHIRE, and JavaOne, about the topics related to the architecture and development of composite applications. Prior to joining SAP, he worked at Siemens as a consultant for distributed J2EE-based architectures and integration architectures using SAP integration technologies. Volker Stiehl's email address is volker.stiehl@sap.com.

Preface to the Second Edition ... 17 Preface to the First Edition ... 21 1 ... SAP NetWeaver ... 25 ... 1.1 ... Platform for Enterprise Service-Oriented Architecture ... 26 ... 1.2 ... Platform for SAP ERP and SAP Business Suite ... 29 ... 1.3 ... Platform for Integration and Composition ... 35 ... 1.4 ... Technology Map ... 45 ... 1.5 ... Outlook ... 52 2 ... Overview of the SAP NetWeaver Developer Studio ... 53 ... 2.1 ... User Interface ... 54 ... 2.2 ... Workspace, Projects, and Development Objects ... 56 ... 2.3 ... Open Source Initiative ... 59 ... 2.4 ... Integration Platform ... 67 ... 2.5 ... Tools and Perspectives ... 81 ... 2.6 ... Installation and Update Outlook ... 101 3 ... SAP NetWeaver Developer Studio Step-by-Step to a Sample Application ... 113 ... 3.1 ... Employee Tutorial Application ... 114 ... 3.2 ... First Steps ... 117 ... 3.3 ... Defining the Data Model ... 119 ... 3.4 ... Implementing Access to Table Data ... 125 ... 3.5 ... Defining the Business Logic ... 138 ... 3.6 ... Creating a JSP-Based Web Application ... 147 ... 3.7 ... Defining and Deploying the Java EE Overall Application ... 154 4 ... Java Persistence ... 161 ... 4.1 ... Open JDBC for Java ... 161 ... 4.2 ... Persistence Infrastructure of the SAP NetWeaver Composition Environment at Runtime ... 162 ... 4.3 ... Java Dictionary ... 168 ... 4.4 ... Development of an Example Application ... 170 ... 4.5 ... Programming with Enterprise JavaBeans 3.0/Java Persistence API ... 177 ... 4.6 ... Outlook ... 210 5 ... Web Services and Enterprise Services in the SAP NetWeaver Composition Environment ... 211 ... 5.1 ... Enterprise Services Paradigm ... 213 ... 5.2 ... Services Registry ... 214 ... 5.3 ... Consuming a Service ... 223 ... 5.4 ... Outlook: Provision of a Service with the Enterprise Services Repository ... 241 6 ... Developing Business Applications with Web Dynpro ... 245 ... 6.1 ... Principles and Concepts ... 246 ... 6.2 ... Web Dynpro Calls a Web Service ... 258 ... 6.3 ... Integrating Web Dynpro Components for Searching for Ticker Symbols ... 306 7 ... Running Web Dynpro Applications in SAP NetWeaver Portal ... 331 ... 7.1 ... Creating Web Dynpro iViews in the Portal ... 333 ... 7.2 ... Creating a Web Dynpro Page ... 336 ... 7.3 ... Adding Web Dynpro iViews to the Portal Page ... 338 8 ... SAP NetWeaver Visual Composer ... 347 ... 8.1 ... Model-Based Development ... 347 ... 8.2 ... Visual Composer in the SAP NetWeaver Composition Environment ... 350 ... 8.3 ... Example Scenario ... 356 9 ... Developing Composite Applications ... 379 ... 9.1 ... Philosophy and Benefits ... 380 ... 9.2 ... Basic Assumptions ... 381 ... 9.3 ... Basic Architecture ... 383 ... 9.4 ... Example Scenario: Project Management ... 390 ... 9.5 ... Installing and Configuring the Reference Application ... 448 10 ... SAP NetWeaver Development Infrastructure and the Component Model Concepts ... 453 ... 10.1 ... Special Characteristics of Large-Scale Software Projects ... 453 ... 10.2 ... Elements of SAP NetWeaver Development Infrastructure ... 459 ... 10.3 ... New Features in SAP NetWeaver Development Infrastructure ... 515 ... 10.4 ... SAP NetWeaver Development Infrastructure and Component Model in Composition Environment ... 523 11 ... SAP NetWeaver Development Infrastructure Configuration and Administration ... 535 ... 11.1 ... Configuring SAP NetWeaver Development Infrastructure ... 536 ... 11.2 ... Administration of SAP NetWeaver Development Infrastructure ... 566 ... 11.3 ... Software Change Management with SAP NetWeaver Development Infrastructure ... 593 12 ... SAP NetWeaver Development Infrastructure Developing an Example Application Step-by-Step ... 605 ... 12.1 ... Employee Example Application ... 607 ... 12.2 ... Working with SAP NetWeaver Development Infrastructure Initial Steps ... 607 ... 12.3 ... Development Cycle Using the Employee Application ... 610 13 ... SAP NetWeaver Application Server Java Architecture ... 649 ... 13.1 ... Cluster Architecture of SAP NetWeaver Application Server Java ... 650 ... 13.2 ... Runtime Architecure of SAP NetWeaver Application Server Java ... 655 14 ... Supportability of the SAP NetWeaver Composition Environment ... 661 ... 14.1 ... Monitoring ... 661 ... 14.2 ... Administration ... 668 ... 14.3 ... Troubleshooting ... 673 The Authors ... 679