J2EE Connector Architecture and Enterprise Application Integration

J2EE Connector Architecture and Enterprise Application Integration
Rahul Sharma
Beth Stearns
Tony Ng
Publisher: Addison Wesley
First Edition December 01, 2001
ISBN: 0-201-77580-8, 416 pages

The Java(TM) 2 Enterprise Edition (J2EE) platform connector architecture is the key component in
Java’s support for enterprise application integration (EAI) and for linking enterprise information
systems (EISs) with Web services. Because many services are now provided through the Web, it is
essential that business enterprises have an efficient EAI solution. J2EE(TM) Connector Architecture and Enterprise Application Integration is the definitive guide to showing enterprise organizations how to incorporate existing enterprise infrastructure and applications, taking them into the Web-enabled economy of the future.

Written for application component developers who are building Connector architecture applications,
J2EE(TM) Connector Architecture and Enterprise Application Integration explains how to connect
applications not only to one another but also to a multitude of EISs and legacy systems. This book is also of interest to independent software developers (ISVs) and others who develop resource adapters for specific EISs. Readers will learn how to link underlying infrastructure products with J2EE application server and platform technologies.

Table of Content
TABLE OF CONTENT............................................................................................................................................A
FOREWORD .......................................................................................................................................................... I
PREFACE ........................................................................................................................................................... III
Conventions Used in This Book .................................................................................................................... III
Graphics....................................................................................................................................................... III
Typographic Conventions ..............................................................................................................................IV
Other Sources of Information ........................................................................................................................IV
Contents of the Book ......................................................................................................................................V
ACKNOWLEDGMENTS .....................................................................................................................................VIII
CHAPTER 1. ENTERPRISE APPLICATION INTEGRATION......................................................................................... 1
1.1 What Is Enterprise Application Integration?............................................................................................ 2
1.2 Web-driven Application Integration ......................................................................................................... 3
1.3 Enterprise Information Systems................................................................................................................ 4
1.4 Challenges in EIS Integration................................................................................................................... 6
1.5 Enterprise Application Integration Approaches....................................................................................... 7
1.6 J2EE Connector Architecture and EAI................................................................................................... 13
1.7 Conclusion ............................................................................................................................................. 15
CHAPTER 2. J2EE CONNECTOR ARCHITECTURE OVERVIEW.............................................................................. 16
2.1 What Is the J2EE Platform? ................................................................................................................... 16
2.2 J2EE Connector Architecture Overview................................................................................................. 19
2.3 Example Scenario .................................................................................................................................. 22
2.4 Conclusion ............................................................................................................................................. 26
CHAPTER 3. MANAGING CONNECTIONS............................................................................................................. 27
3.1 Connection Management Contract ......................................................................................................... 28
3.2 Connection Management Architecture ................................................................................................... 28
3.3 Application Programming Model ........................................................................................................... 30
3.4 Conclusion ............................................................................................................................................. 31
CHAPTER 4. WORKING WITH TRANSACTIONS .................................................................................................... 32
4.1 Introduction to Transactions................................................................................................................... 32
4.2 Developing Transactional Applications ................................................................................................. 35
4.3 Transaction Levels................................................................................................................................. 38
4.4 Sample Application Transaction Scenario.............................................................................................. 38
4.5 Conclusion ............................................................................................................................................. 40
CHAPTER 5. MANAGING SECURITY.................................................................................................................... 41
5.1 Security Concepts................................................................................................................................... 41
5.2 Security Model for EIS Connections....................................................................................................... 43
5.3 Understanding EIS Sign-On ................................................................................................................... 44
5.4 Managing Security ................................................................................................................................. 45
5.5 Security Example ................................................................................................................................... 47
5.6 Conclusion ............................................................................................................................................. 49
CHAPTER 6. ASYNCHRONOUS MESSAGING ........................................................................................................ 50
6.1 Synchronous Communication ................................................................................................................. 50
6.2 Asynchronous Communication ............................................................................................................... 52
6.3 Connector Architecture 2.0 Message Handling...................................................................................... 53
6.4 Communication Trade-offs ..................................................................................................................... 54
6.5 Enterprise Messaging Technologies ....................................................................................................... 55
6.6 Java Message Service ............................................................................................................................. 56
6.7 JMS and EAI .......................................................................................................................................... 59
6.8 J2EE Platform and EAI .......................................................................................................................... 60
6.9 Message-driven Bean............................................................................................................................. 61
6.10 Example................................................................................................................................................ 62
6.11 Conclusion ........................................................................................................................................... 64
CHAPTER 7. COMMON CLIENT INTERFACE......................................................................................................... 66
7.1 Overview of the CCI............................................................................................................................... 66
7.2 CCI Programming Example ................................................................................................................... 67
7.3 Connection Interfaces ............................................................................................................................. 70
7.4 Interaction Interfaces............................................................................................................................. 72
7.5 Data Representation Interfaces .............................................................................................................. 74
7.6 Metadata Interfaces ............................................................................................................................... 75
7.7 Exception Interfaces............................................................................................................................... 76
7.8 Code Examples....................................................................................................................................... 76
7.9 Conclusion ............................................................................................................................................. 78
CHAPTER 8. TOOLS AND FRAMEWORKS............................................................................................................. 79
8.1 Types of Tools ........................................................................................................................................ 79
8.2 Connector Architecture Tools Support ................................................................................................... 80
8.3 EIS Access Objects................................................................................................................................. 81
8.4 Guidelines for Access Objects ................................................................................................................ 85
8.5 EJB 2.0 Container-Managed Persistence............................................................................................... 86
8.6 Conclusion ............................................................................................................................................. 87
CHAPTER 9. XML AND THE CONNECTOR ARCHITECTURE................................................................................. 88
9.1 Enterprise Application Integration and XML ......................................................................................... 88
9.2 Overview of XML Concepts .................................................................................................................... 89
9.3 Defining Document Types and Formats ................................................................................................. 89
9.4 Java Technologies Supporting XML....................................................................................................... 90
9.5 XML and Connector Architecture........................................................................................................... 93
9.6 XML Support in Connector Architecture................................................................................................ 96
9.7 Conclusion ............................................................................................................................................. 97
CHAPTER 10. BUILDING A RESOURCE ADAPTER................................................................................................ 98
10.1 Implementing a Resource Adapter........................................................................................................ 98
10.2 System Contract Interfaces ................................................................................................................... 99
10.3 Managing Transactions ...................................................................................................................... 103
10.4 Implementing Security Management................................................................................................... 104
10.5 Handling Connection Events .............................................................................................................. 105
10.6 Distributing a Resource Adapter ........................................................................................................ 106
10.7 Using an Adapter in the Runtime Environment .................................................................................. 107
10.8 Conclusion ......................................................................................................................................... 108
CHAPTER 11. RESOURCE ADAPTER PACKAGING AND DEPLOYMENT ............................................................... 109
11.1 Deployment Approaches ..................................................................................................................... 110
11.2 Packaging a Resource Adapter........................................................................................................... 111
11.3 Deployment and Configuration........................................................................................................... 113
11.4 Connection Factory Creation ............................................................................................................. 113
11.5 Using Packaging and Deployment Tools............................................................................................ 113
11.6 Conclusion ......................................................................................................................................... 117
CHAPTER 12. CONNECTION MANAGEMENT CONTRACT................................................................................... 119
12.1 Connection Management Contract ..................................................................................................... 119
12.2 Contract Overview .............................................................................................................................. 119
12.3 Scenarios............................................................................................................................................ 121
12.4 Connection Management Classes and Interfaces ............................................................................... 128
12.5 Conclusion ......................................................................................................................................... 132
CHAPTER 13. TRANSACTION MANAGEMENT CONTRACT ................................................................................. 133
13.1 Transaction Management Contract .................................................................................................... 133
13.2 Local Transaction Management ......................................................................................................... 135
13.3 XAResource Transaction Management............................................................................................... 137
13.4 Requirements for Transaction Management Contract ....................................................................... 140
13.5 Connection Sharing ............................................................................................................................ 141
13.6 Transaction Scenarios ........................................................................................................................ 142
13.7 Conclusion ......................................................................................................................................... 144
13.7 Conclusion ......................................................................................................................................... 145
CHAPTER 14. SECURITY MANAGEMENT CONTRACT........................................................................................ 146
14.1 Interfaces and Classes ........................................................................................................................ 146
14.2 Security Management Contract .......................................................................................................... 148
14.3 Conclusion ......................................................................................................................................... 150
CHAPTER 15. FUTURE DIRECTIONS.................................................................................................................. 151
15.1 Connector Architecture 2.0................................................................................................................. 151
15.2 J2EE and EAI..................................................................................................................................... 153
15.3 Conclusion ......................................................................................................................................... 153
CHAPTER 16. THE SAP CONNECTOR ............................................................................................................... 154
16.1 Architecture of SAP Systems............................................................................................................... 154
16.2 Architecture of the SAP Connector..................................................................................................... 156
16.3 Example.............................................................................................................................................. 159
CHAPTER 17. DEVELOPING APPLICATIONS WITH JCA -BASED TOOLS ............................................................. 162
17.1 Enterprise Access Builder (EAB) 101................................................................................................. 162
17.2 JCA Application Development Process .............................................................................................. 163
17.3 Future Directions............................................................................................................................... 174
17.4 Conclusion ......................................................................................................................................... 175
CHAPTER 18. EMBRACING THE J2EE CONNECTOR ARCHITECTURE: THE BEA WEBLOGIC EXPERIENCE ....... 177
18.1 WebLogic Server's Implementation of the J2EE Connector Architecture Specification.................... 177
18.2 WebLogic Integration 2.0 ................................................................................................................... 182
18.3 BEA Partners Adopting the J2EE Connector Architecture ................................................................ 186
APPENDIX A. API REFERENCE ........................................................................................................................ 187
A.1 javax.resource Package........................................................................................................................ 187
A.2 javax.resource.cci Package .................................................................................................................. 187
A.3 javax.resource.spi Package .................................................................................................................. 203
A.4 javax.resource.spi.security Package .................................................................................................... 216
GLOSSARY ...................................................................................................................................................... 220

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