Webwork in Action

By: Patrick Lightbody

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Paperback | 13 October 2005

At a Glance

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400 Pages

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23.5 x 19.05 x 3.18

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WebWork helps developers build well-designed applications quickly by creating re-usable, modular, web-based applications. WebWork in Action is the first book to focus entirely on WebWork. Like a true "Action" book, it is both a tutorial on WebWork and a sourcebook for its use in demanding, real-world applications. The book goes into considerable depth on how to get desirable web features with WebWork. It uses the same basic (continuing) example as in Manning's Hibernate in Action to show how to integrate WebWork with the popular Hibernate persistance framework.

Although Java was (correctly) touted as the next big programming language, it wasn't until the introduction of J2EE and Servlets that its use really took off. Yet, in spite of the huge popularity of JSPs and Servlets, it was never easy for developers to quickly create re-usable, modular web-based applications. Not long after the introduction of JSPs, WebWork sought to solve those very problems and has been helping thousands of developers ever since. WebWork is a web-application framework used by people who understand that somewhere been "just get it done, no matter how ugly" and "make it perfect" lies their best choice. WebWork helps developers build applications quickly, but its unique design also lets developers build beautifully-designed applications.

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Non-Fiction Computing & I.T.Graphical & Digital Media Applications Web Graphics & Design Computer Programming & Software Development Web Programming

Foreword	p. xv
Preface	p. xvii
Acknowledgments	p. xix
About this book	p. xxi
A look at the future	p. xxvi
About the title	p. xxvii
About the cover illustration	p. xxviii
Introduction to WebWork	p. 1
An overview of WebWork	p. 3
Why MVC is important	p. 5
Classic MVC becomes outdated	p. 6
Classic MVC gets an update: the Front Controller	p. 7
MVC evolves: the Page Controller	p. 7
Understanding frameworks and containers	p. 9
What is a framework?	p. 9
What a container can do	p. 11
WebWork: past, present, and future	p. 13
The history of WebWork	p. 13
Understanding the XWork core	p. 13
Future directions	p. 15
The CaveatEmptor application	p. 15
How CaveatEmptor is organized	p. 16
Summary	p. 17
HelloWorld, the WebWork way	p. 19
Downloading WebWork	p. 20
Preparing the skeleton	p. 20
Creating the web.xml deployment file	p. 21
Creating the xwork.xml configuration file	p. 23
Creating the webwork.properties configuration file	p. 23
Tips for developing WebWork apps	p. 24
Your first action	p. 24
Saying hello, the WebWork way	p. 25
Displaying output to the web browser	p. 26
Configuring your new action	p. 27
Dealing with inputs	p. 28
Advanced control flow	p. 31
Letting WebWork do the work	p. 33
Taking advantage of ActionSupport	p. 34
Intermediate modifications to the JSP	p. 35
Exploring the UI tag library	p. 36
Summary	p. 37
Setting up WebWork	p. 38
Configuring actions, results, and interceptors	p. 39
Overview of terminology	p. 39
Actions	p. 40
Results	p. 46
Interceptors	p. 48
Advanced configuration	p. 52
The xwork.xml DTD	p. 52
Namespaces and packages	p. 53
Componentization using the include tag	p. 57
Other configuration files	p. 66
Web-app configuration: web.xml	p. 66
Feature configuration: webwork.properties	p. 67
Setting up your web app	p. 70
General layout	p. 70
Required libraries	p. 71
Optional libraries	p. 72
Summary	p. 72
Core concepts	p. 75
Implementing WebWork actions	p. 77
The Action interface	p. 78
Result codes	p. 78
Handling exceptions	p. 79
Using the ActionSupport base class	p. 80
Understanding basic validation	p. 80
Validating an action: Validateable	p. 81
Displaying error messages: ValidationAware	p. 82
Using localized message texts	p. 86
Retrieving the user's locale: LocaleProvider	p. 86
Displaying the localized text: TextProvider	p. 86
Providing messages for other languages	p. 89
Advanced inputs	p. 90
Intermediary objects	p. 90
Using domain objects directly	p. 91
Working with ModelDriven actions	p. 95
Implementing ModelDriven actions	p. 96
Considerations when using ModelDriven	p. 100
Accessing data through the ActionContext	p. 102
CaveatEmptor: accessing the session	p. 102
Example: accessing the request and response	p. 105
Handling file uploads	p. 107
Accessing uploaded files through the request wrapper	p. 107
Automating file uploads	p. 109
Configuration settings	p. 110
Summary	p. 111
Adding functionality with interceptors	p. 112
How interceptors are called	p. 113
Using the prepackaged interceptors	p. 114
Utility interceptors	p. 117
Setting parameters	p. 119
Defining workflow	p. 123
Using prepackaged interceptor stacks	p. 126
Building your own interceptors	p. 128
Using the AroundInterceptor as a base	p. 129
Looking at an example custom interceptor	p. 130
Getting callbacks before the result is executed with the PreResultListener	p. 133
Looking out for interceptor interactions	p. 134
Interceptors vs. servlet filters	p. 135
Summary	p. 136
Inversion of Control	p. 137
Examining the pattern	p. 138
Common patterns for active resource management	p. 138
Inverting resource management	p. 142
How IoC helps with testing	p. 145
IoC essentials	p. 146
WebWork's IoC history	p. 146
Dependencies	p. 148
Scope and lifecycle	p. 149
Using WebWork's IoC framework	p. 151
Configuration	p. 151
Creating a new component	p. 154
Using IoC on any object	p. 158
Dealing with complex dependencies	p. 159
An example from CaveatEmptor	p. 162
The HibernateSessionFactory component	p. 163
The Persistence Manager component	p. 165
Configuring the components	p. 168
Using the new components	p. 169
Alternatives	p. 170
Alternative IoC containers	p. 170
Non-IoC alternatives	p. 172
Summary	p. 173
Displaying content	p. 175
Using results	p. 177
Life after the action	p. 178
A simple result	p. 178
Configuring a result	p. 180
Common results	p. 182
Dispatching to a page	p. 182
Redirecting to a page	p. 188
Chaining to another action	p. 192
Other results	p. 197
Streaming Velocity templates directly to the output	p. 197
FreeMarker: an alternative to Velocity	p. 202
Generating reports with JasperReports	p. 203
Summary	p. 207
Getting data with the expression language	p. 209
What is an expression language?	p. 210
Why an expression language?	p. 210
Why OGNL?	p. 211
Other expression languages	p. 212
Key OGNL concepts	p. 213
Basic expression language features	p. 213
Accessing bean properties	p. 214
Literals and operators	p. 215
Calling methods	p. 217
Setting values and expression lists	p. 218
Accessing static methods and fields	p. 218
Accessing the OGNL context and the ActionContext	p. 218
Working with collections	p. 220
Working with lists and arrays	p. 220
Working with maps	p. 221
Filtering and projecting collections	p. 222
The multiple uses of "#"	p. 223
Advanced expression language features	p. 224
Linking the value stack to the expression language	p. 224
Data type conversion	p. 226
Handling null property access	p. 227
Creating lambda expressions on the fly	p. 228
Summary	p. 228
Tag libraries	p. 230
Getting started	p. 231
An overview of WebWork tags	p. 232
The WebWork tag syntax	p. 233
Data tags	p. 235
The property tag	p. 235
The set tag	p. 236
The push tag	p. 237
The bean tag	p. 238
The action tag	p. 240
Control tags	p. 242
The iterator tag	p. 242
The if and else tags	p. 245
Miscellaneous tags	p. 246
The include tag	p. 246
The URL tag	p. 247
The i18n and text tags	p. 250
The param tag	p. 252
Summary	p. 253
Velocity	p. 254
Introduction to Velocity	p. 255
What is Velocity?	p. 255
Getting ready to use Velocity	p. 257
Basic syntax and operations	p. 259
Property access	p. 259
Method calls	p. 261
Control statements: if/else and loops	p. 261
Assigning variables	p. 265
Advanced techniques	p. 265
The VelocityContext	p. 265
WebWork-supplied objects in the context	p. 266
Customizing the Velocity context	p. 267
Using JSP tags in Velocity	p. 268
Loading Velocity templates	p. 269
Summary	p. 269
UI components	p. 271
Why bother with UI tags?	p. 272
Eliminating the pain	p. 272
More than just form elements	p. 280
UI tag overview	p. 283
Templates	p. 283
Themes	p. 285
Tag attributes	p. 291
UI tag reference	p. 291
Common attributes	p. 291
Simple tags	p. 294
Collection-based tags	p. 299
Advanced tags	p. 305
Summary	p. 309
Advanced topics	p. 311
Type conversion	p. 313
Why type conversion?	p. 314
The Servlet specification	p. 314
An action without type conversion	p. 315
A view without type conversion	p. 317
What WebWork's type conversion gives you	p. 319
Configuration	p. 320
Role of a type converter	p. 321
Global type converters	p. 322
Class-level type converters	p. 322
Simple type conversion	p. 323
Basic type conversion	p. 323
Built-in type conversion	p. 325
Handling null property access	p. 326
Advanced topics	p. 326
Handling null Collection access	p. 326
Handling conversion errors	p. 329
An example that puts it all together	p. 330
Summary	p. 331
Validating form data	p. 333
Manually validating data	p. 336
Validating in the execute() method	p. 336
Implementing the Validateable interface	p. 337
Using the Validation Framework	p. 340
Building your first *-validation.xml file	p. 340
Registering validators	p. 341
Applying the validation interceptor	p. 345
Pulling it all together	p. 346
Looking at some validation XML examples	p. 348
Exploring the advanced features of the Validation Framework	p. 350
Implementing a custom validator	p. 351
Validating with different contexts	p. 353
Short-circuiting validation	p. 354
The Expression Validator	p. 355
Reusing validations with the visitor field validator	p. 356
Summary	p. 359
Internationalization	p. 360
Exploring a quick internationalization example	p. 361
Sources for messages	p. 362
Understanding the ResourceBundle search order	p. 364
Adding default resource bundles	p. 366
The tag	p. 366
Using internationalized messages	p. 368
Parameterizing localized texts	p. 368
Using getText() in taglib attributes	p. 369
Formatting dates and numbers	p. 370
Using localized messages in validations	p. 370
Using internationalized texts for type conversion messages	p. 371
Tips and tricks	p. 373
Programmatically setting the locale	p. 373
Implementing ResourceBundles as classes	p. 375
Using the tag to pass dynamically generated text to message texts	p. 378
Setting the encoding: here, there, and everywhere	p. 381
A note on Java PropertyResourceBundles	p. 382
A final note	p. 382
Summary	p. 383
Best practices	p. 384
Setting up your environment	p. 385
Setting up your IDE	p. 386
Reloading resources	p. 388
Unit-testing your actions	p. 389
Using mock objects	p. 389
The advantage of IoC for testing	p. 391
Handling statics and ThreadLocals	p. 391
Putting the pieces together: integration testing	p. 393
Testing your configuration	p. 393
Seeing the configuration with the config browser	p. 396
Testing validations	p. 398
Testing programmatic validations	p. 398
Testing validation.xml files	p. 398
Advanced UI tag usage	p. 402
Overriding existing templates	p. 403
Writing custom templates	p. 406
Writing custom themes	p. 407
Using form tokens to prevent duplicate form submissions	p. 409
Using the tag	p. 410
Applying the TokenInterceptor	p. 412
Transparently re-rendering pages with the TokenSessionStoreInterceptor	p. 413
Displaying wait pages automatically	p. 413
A Single action for CRUD operations	p. 417
Creating new categories with newCategory	p. 418
Reading and updating with viewCategory and editCategory	p. 419
Saving categories with saveCategory	p. 420
Setting the parentCategory	p. 422
Summary	p. 423
WebWork architecture	p. 424
Index	p. 439
Table of Contents provided by Ingram. All Rights Reserved.

Webwork in Action

At a Glance

Paperback

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How to return your order

Defective items

You Can Find This Book In

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