Building Dynamic Ajax Applications Using WebSphere Feature Pack









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Building Dynamic Ajax Applications Using WebSphere Feature Pack

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210175 Building Dynamic Ajax Applications Using WebSphere Feature Pack ibm.com/redbooks

Building Dynamic Ajax

Applications Using WebSphere Feature Pack for Web 2.0

G. Michael Connolly

Mehmet Akin

Ankur Goyal

Robin Howlett

Matthew Perrins

Web 2.0 features and benefits

explained

Ajax client runtime functions

explored

Sample implementations

presented

Front cover

Building Dynamic Ajax Applications Using

WebSphere Feature Pack for Web 2.0

November 2008International Technical Support Organization

SG24-7635-00

© Copyright International Business Machines Corporation 2008. All rights reserved.

Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP

Schedule Contract with IBM Corp.

First Edition (November 2008)

This edition applies to WebSphere Application Server Feature Pack for Web 2.0 for Version 6.0.2,

Version 6.1, and Community Edition Version 2.0.

Note: Before using this information and the product it supports, read the information in "Notices" on page xiii. © Copyright IBM Corp. 2008. All rights reserved.iii

Contents

Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiv

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

The team that wrote this book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xvi

Become a published author . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Comments welcome. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Chapter 1. Introduction to Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Introduction to Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Catching a wave of innovation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.1 A tipping point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.2 Web 2.0 technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.3 Web 2.0 releases the value of SOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4 Enterprise Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.5 Extending the reach of SOA with RESTful SOA . . . . . . . . . . . . . . . . . . . . . 9

1.5.1 REST and the foundation of the RESTful SOA. . . . . . . . . . . . . . . . . 10

1.5.2 Unleash your assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.5.3 Unleashing your J2EE assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1.5.4 Classification of feeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.6 What is Ajax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.6.1 History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.6.2 Justification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Chapter 2. Feature pack overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.1 Feature packs for WebSphere Application Server . . . . . . . . . . . . . . . . . . 22

2.2 Feature Pack for Web 2.0 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.2.1 Ajax connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.2.2 Server-side libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2.2.3 Ajax client runtime (Ajax Development Toolkit). . . . . . . . . . . . . . . . . 26

2.2.4 Web 2.0 sample applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2.2.5 FeedSphere sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.3 Benefits of Feature Pack for Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.4 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Chapter 3. Core concepts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.1 The technical foundations of Web 2.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.1.1 HTTP Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.1.2 REST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

iv Building Dynamic Ajax Applications Using WebSphere Feature Pack for Web 2.0

3.1.3 Asynchronous JavaScript (Ajax) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.1.4 JSON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.1.5 POX (XML) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.1.6 Atom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.1.7 JavaScript . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.1.8 DOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.1.9 DHTML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.1.10 CSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.2 Model View Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.2.1 Model 2 J2EE MVC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.2.2 Web 2.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Chapter 4. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.1 Supported platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.2 Supported Integrated Development Environments (IDEs) . . . . . . . . . . . . 44

4.3 Installing the application server product . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.3.1 Updating the application server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.3.2 Applying the appropriate iFix for the Web messaging feature . . . . . 45

4.4 Downloading Feature Pack for Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.4.1 WebSphere Application Server Community Edition Version 2.0. . . . 46

4.4.2 WebSphere Application Server Version 6 for Distributed, i5/OS . . . 46

4.4.3 WebSphere Application Server Version 6 for z/OS. . . . . . . . . . . . . . 46

4.5 Installing Feature Pack for Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.5.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.5.2 Installing Feature Pack for Web 2.0 on distributed OSs . . . . . . . . . . 47

4.5.3 Installing Feature Pack for Web 2.0 on i5/OS. . . . . . . . . . . . . . . . . . 50

4.5.4 Installing Feature Pack for Web 2.0 on z/OS . . . . . . . . . . . . . . . . . . 53

4.6 Uninstalling Feature Pack for Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

4.6.1 Uninstalling Feature Pack for Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . 53

4.6.2 Uninstalling the feature pack on i5/OS . . . . . . . . . . . . . . . . . . . . . . . 56

4.6.3 Manual uninstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

4.6.4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Chapter 5. Application development tools . . . . . . . . . . . . . . . . . . . . . . . . . 63

5.1 Ajax development tools overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

5.2 Rational Application Developer 7.0.0.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

5.2.1 IBM Installation Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

5.2.2 Installation of Rational Application Developer. . . . . . . . . . . . . . . . . . 66

ibm.com/redbooks

Building Dynamic Ajax

Applications Using WebSphere Feature Pack for Web 2.0

G. Michael Connolly

Mehmet Akin

Ankur Goyal

Robin Howlett

Matthew Perrins

Web 2.0 features and benefits

explained

Ajax client runtime functions

explored

Sample implementations

presented

Front cover

Building Dynamic Ajax Applications Using

WebSphere Feature Pack for Web 2.0

November 2008International Technical Support Organization

SG24-7635-00

© Copyright International Business Machines Corporation 2008. All rights reserved.

Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP

Schedule Contract with IBM Corp.

First Edition (November 2008)

This edition applies to WebSphere Application Server Feature Pack for Web 2.0 for Version 6.0.2,

Version 6.1, and Community Edition Version 2.0.

Note: Before using this information and the product it supports, read the information in "Notices" on page xiii. © Copyright IBM Corp. 2008. All rights reserved.iii

Contents

Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiv

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv

The team that wrote this book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xvi

Become a published author . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Comments welcome. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii

Chapter 1. Introduction to Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Introduction to Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Catching a wave of innovation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.1 A tipping point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.2 Web 2.0 technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.3 Web 2.0 releases the value of SOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4 Enterprise Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.5 Extending the reach of SOA with RESTful SOA . . . . . . . . . . . . . . . . . . . . . 9

1.5.1 REST and the foundation of the RESTful SOA. . . . . . . . . . . . . . . . . 10

1.5.2 Unleash your assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1.5.3 Unleashing your J2EE assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1.5.4 Classification of feeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.6 What is Ajax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.6.1 History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.6.2 Justification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Chapter 2. Feature pack overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.1 Feature packs for WebSphere Application Server . . . . . . . . . . . . . . . . . . 22

2.2 Feature Pack for Web 2.0 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.2.1 Ajax connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.2.2 Server-side libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2.2.3 Ajax client runtime (Ajax Development Toolkit). . . . . . . . . . . . . . . . . 26

2.2.4 Web 2.0 sample applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2.2.5 FeedSphere sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.3 Benefits of Feature Pack for Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

2.4 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Chapter 3. Core concepts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.1 The technical foundations of Web 2.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.1.1 HTTP Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.1.2 REST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

iv Building Dynamic Ajax Applications Using WebSphere Feature Pack for Web 2.0

3.1.3 Asynchronous JavaScript (Ajax) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.1.4 JSON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.1.5 POX (XML) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.1.6 Atom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.1.7 JavaScript . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.1.8 DOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.1.9 DHTML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.1.10 CSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.2 Model View Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.2.1 Model 2 J2EE MVC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

3.2.2 Web 2.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Chapter 4. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

4.1 Supported platforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.2 Supported Integrated Development Environments (IDEs) . . . . . . . . . . . . 44

4.3 Installing the application server product . . . . . . . . . . . . . . . . . . . . . . . . . . 44

4.3.1 Updating the application server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.3.2 Applying the appropriate iFix for the Web messaging feature . . . . . 45

4.4 Downloading Feature Pack for Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.4.1 WebSphere Application Server Community Edition Version 2.0. . . . 46

4.4.2 WebSphere Application Server Version 6 for Distributed, i5/OS . . . 46

4.4.3 WebSphere Application Server Version 6 for z/OS. . . . . . . . . . . . . . 46

4.5 Installing Feature Pack for Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.5.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

4.5.2 Installing Feature Pack for Web 2.0 on distributed OSs . . . . . . . . . . 47

4.5.3 Installing Feature Pack for Web 2.0 on i5/OS. . . . . . . . . . . . . . . . . . 50

4.5.4 Installing Feature Pack for Web 2.0 on z/OS . . . . . . . . . . . . . . . . . . 53

4.6 Uninstalling Feature Pack for Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

4.6.1 Uninstalling Feature Pack for Web 2.0 . . . . . . . . . . . . . . . . . . . . . . . 53

4.6.2 Uninstalling the feature pack on i5/OS . . . . . . . . . . . . . . . . . . . . . . . 56

4.6.3 Manual uninstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

4.6.4 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Chapter 5. Application development tools . . . . . . . . . . . . . . . . . . . . . . . . . 63

5.1 Ajax development tools overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

5.2 Rational Application Developer 7.0.0.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

5.2.1 IBM Installation Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

5.2.2 Installation of Rational Application Developer. . . . . . . . . . . . . . . . . . 66


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