book

Groovy and Grails Recipes

Name: Groovy and Grails Recipes
Author: Bashar Abdul-Jawad
ISBN: 9781430216001

by Bashar Abdul-Jawad

December 2008

Intermediate to advanced

421 pages

8h 22m

English

Apress

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Title Page
Dedication
Contents at a Glance
Contents
About the Author
About the Technical Reviewer
Acknowledgments
Introduction
Who this Book Is ForHow this Book Is StructuredPrerequisitesDownloading the CodeContacting the author
PART 1: Groovy by Example
CHAPTER 1: Getting Started with Groovy1-1. What Is Groovy?1-2. What Is Wrong with Java?1-3. How Does Groovy Address the Shortcomings of Java?1-4. How Do I Download and Install Groovy?1-5. What Tools Come with Groovy?1-6. How Do I Use the Groovy Shell?1-7. How Do I Use the Groovy Console?1-8. How Do I Use groovyc and groovy?1-9. Is There IDE Support for Groovy?1-10. How Do I Integrate Groovy with Eclipse?1-11. How Do I Integrate Groovy with IntelliJ IDEA?Summary
CHAPTER 2: From Java to Groovy
2-1. What Are the Similarities Between Java and Groovy?2-2. What Are the Differences Between Java and Groovy?2-3. How Do I Integrate Groovy with Java?Summary

CHAPTER 3: Groovy Data Types and Control Structures
3-1. What Are the Different Kinds of Strings in Groovy and How Do I Use Them?3-2. How Do I Use Regular Expressions in Groovy?3-3. How Are Numbers in Groovy Different from Those in Java?3-4. How Do I Use Lists in Groovy?3-5. How Do I Implement a Merge Sort in Groovy?3-6. How Do I Use Maps in Groovy?3-7. What Are Ranges and How Do I Use Them in Groovy?3-8. What Is the Groovy Truth?3-9. How Is the switch Statement in Groovy Different from Java?3-10. How Do I Perform Looping in Groovy?Summary
CHAPTER 4: Object-Oriented Groovy
4-1. What Are the Differences Between Classes and Scripts?4-2. How Do I Use Packages?4-3. What Is Type Aliasing and How Do I Use It?4-4. How Do I Use Inheritance in Groovy?4-5. How Do I Use Interfaces in Groovy?4-6. What Are Multimethods and How Do I Use Them?4-7. What Are Categories and How Do I Use Them?4-8. How Are Groovy Fields and Local Variables Different from Those in Java?4-9. How Are Groovy Methods Different from Java Methods?4-10. How Are Groovy Constructors Different from Those in Java?4-11. What Are GroovyBeans?4-12. What Are GPaths?4-13. How Do I Use the Expando Class?4-14. What Is Metaclass and How Do I Use It?4-15. How Do I Intercept All Method Calls on an Object?4-16. How Do I Intercept Methods That Don't Exist on a Class?4-17. How Do I Add Additional Behavior to a Class by Using ExpandoMetaClass?Summary
CHAPTER 5: Closures
5-1. What Is a Closure?5-2. Why Do I Need Closures?5-3. How Do Closures Compare with Anonymous Inner Classes?5-4. How Do I Create a Closure?5-5. How Do I Call a Closure?5-6. How Do I Return a Value from a Closure?5-7. How Do I Reuse a Method as a Closure?5-8. How Do I Pass a Closure as an Argument to Another Method?5-9. What Is the Scope of a Closure?5-10. What Do this, owner, and delegate Mean Inside a Closure?5-11. How Can I Return from a Closure?5-12. What Does It Mean to Curry Closures?5-13. How Do I Use a Closure Inside a switch Statement?5-14. How Do I Get More Information About the Parameters Passed to a Closure?5-15. How Do I Use Closures Inside a Map?5-16. How Do I Use Closures with Files?Summary
CHAPTER 6: Builders
6-1. What Are Builders?6-2. Why Do I Need Builders?6-3. How Do I Use MarkupBuilder to Build XML?6-4. How Do I Use MarkupBuilder to Build HTML?6-5. How Do I Use NodeBuilder to Build a Tree of Objects?6-6. How Do I Use ObjectGraphBuilder to Build a Tree of Objects?6-7. How Do I Use AntBuilder to Write Ant Tasks?6-8. How Do I Use SwingBuilder to Create Swing Widgets?6-9. How Do I Use Layout Managers with SwingBuilder?6-10. How Do I Add an Action to a Swing Widget?6-11. How Do I Share Actions Among Widgets?6-12. How Do I Use Swing Models?6-13. How Do I Create My Own Builder?Summary
CHAPTER 7: Working with Databases
7-1. How Do I Connect to a Database?7-2. How Do I Use Connection Pooling?7-3. How Do I Create a New Table?7-4. How Do I Insert, Update, and Delete Data?7-5. How Do I Read Data from My Tables?7-6. How Do I Retrieve a Table's Metadata?7-7. How Do I Use DataSet?7-8. How Do I Use DataSet with Joined Tables?Summary
CHAPTER 8: Testing with Groovy
8-1. How Do I Write an Inline Test in Groovy?8-2. How Do I Write a Test Class in Groovy?8-3. How Do I Use Groovy to Test Java Code?8-4. How Do I Organize Tests into Suites and Run Them from My IDE?8-5. How Do I Use Ant to Run My Tests?8-6. How Do I Use Maven to Run My Tests?8-7. What Are the Advanced Testing Techniques Offered by Groovy?8-8. How Do I Use Maps to Test My Code?8-9. How Do I Use an Expando Object to Test My Code?8-10. How Do I Use Stubs and Mocks in Groovy?8-11. How Do I Use GroovyLogTestCase?8-12. How Can I Measure My Code Coverage by Using Cobertura?Summary
CHAPTER 9: Miscellaneous Recipes
9-1. How Do I Use Groovy Templates to Generate Dynamic and Reusable Content?9-2. How Do I Use Groovlets to Generate Dynamic Web Content?9-3. How Do I Read and Process XML with XmlParser?9-4. How Do I Read and Process XML with XmlSlurper?9-5. How Do I Use XPath?9-6. How Do I Read an XML RSS Feed?9-7. How Do I Use Groovy on the Command Line?9-8. How Do I Use ConfigSlurper to Write Configuration Files?9-9. How Do I Use Groovy to Run External Processes?9-10. How Do I Download a File in Groovy?9-11. How Do I Process All Files in a Directory?9-12. How Do I Count All Occurrences of a Word in a String?Summary
PART 2: Grails by Example
CHAPTER 10: Getting Started with Grails10-1. What Is Grails?10-2. Why Another Framework?10-3. How Do I Download and Install Grails?10-4. How Do I Create My First Application in Grails?10-5. How Do I Use Grails with Eclipse?10-6. How Do I Use Grails with IntelliJ IDEA?10-7. What Are the Different Grails Commands?Summary
CHAPTER 11: The Web Layer
11-1. How Do I Create a Controller?11-2. What Are Groovy Server Pages?11-3. What Is the Relationship Between Controllers and GSPs?11-4. How Can I Pass Variables from a Controller to a GSP?11-5. How Do I Use Tags as Method Calls?11-6. How Can I Have Multiple Actions Inside a Controller?11-7. What Are the Available Implicit Objects Inside a Controller and a GSP?11-8. How Can I Render a Different View for the User?11-9. How Do I Chain Actions?11-10. How Do I Intercept Actions in a Controller?11-11. How Do I Bind Incoming Parameters?11-12. How Do I Output JSON?11-13. How Do I Render Domain Classes as XML or JSON (Marshalling)?11-14. How Do I Upload and Download Files?11-15. What Are Templates and How Do I Use Them?11-16. How Do I Change the Application's Layout and Look?11-17. How Do I Write My Own Custom Tags?11-18. How Do I Use Filters?11-19. How Do I Use Ajax?Summary
CHAPTER 12: The Data Layer
12-1. How Do I Configure My Application to Use a Database?12-2. How Do I Create a Domain Class?12-3. How Do I Model Relationships?12-4. How Do I Use Composition?12-5. How Do I Perform CRUD Operations on My Domain Classes?12-6. How Do I Query with GORM?12-7. How Do I Use Dynamic Finders?12-8. How Do I Use Criteria?12-9. How Do I Use HQL?12-10. How Do I Use Inheritance?12-11. What is Optimistic and Pessimistic Locking?12-12. How Do I Use Events?12-13. How Do I Use Timestamps?12-14. How Do I Use Caching?12-15. How Do I Use a Custom Database Identifier?12-16. How Do I Use a Composite Primary Key?12-17. How Do I Add an Index to a Column?Summary
CHAPTER 13: Scaffolding
13-1. How Do I Use Dynamic Scaffolding?13-2. How Do I Dynamically Scaffold Relationships?13-3. How Do I Customize the Generated Views?13-4. What Are the Built-in Constraints in Grails?13-5. How Do I Override Scaffolded Actions and Views?13-6. How Do I Use Static Scaffolding?13-7. How Do I Change the Scaffolding Templates?13-8. How Do I Add My Own Property Editor?13-9. How Do I Use Scaffolding with Hibernate Mapped Classes?Summary
CHAPTER 14: Security
14-1. How Do I Protect My Application from SQL Injection Attacks?14-2. How Do I Protect My Application from Cross-Site Scripting (XSS)?14-3. How Do I Use Codecs?14-4. How Do I Restrict the HTTP Request Methods That Can Call an Action?14-5. How Do I Implement Authentication in My Application?14-6. How Do I Use the AcegiSecurity Plug-In?14-7. How Do I Use OpenID?Summary
CHAPTER 15: Testing
15-1. How Do I Unit-Test My Application?15-2. How Do I Create Integration Tests?15-3. How Do I Test render and redirect Methods?15-4. How Do I Test Tag Libraries?15-5. How Do I Test Domain Classes?15-6. How Do I Create a Functional Test with Canoo WebTest?Summary
CHAPTER 16: Miscellaneous Recipes
16-1. What About the Service Layer?16-2. How Can I Use Some of Spring's Advanced Features with Grails?16-3. How Do I Configure My Application by Using External Files?16-4. How Do I Configure Logging in My Application?16-5. How Do I Use Grails with Maven 2?16-6. How Do I Use Grails with REST?16-7. How Do I Write SOAP Web Services in Grails with CXF?Summary
Index

Content preview from Groovy and Grails Recipes

CHAPTER 4Object-Oriented Groovy

Groovy is a fully fledged object-oriented (OO) language supporting all of the OO programming concepts that are familiar to Java developers: classes, objects, interfaces, inheritance, polymorphism, and others. Groovy is a pure OO language in which everything is an object. Don't let the fact that you can write scripts in Groovy fool you; the Groovy compiler will convert such scripts into Java classes of type groovy.lang.Script.

I don't like to label Groovy as a scripting language, because the term scripting is often associated with unwieldy, unstructured, and hard-to-read code that doesn't scale. This is absolutely not the case in Groovy. You can fully organize your code into classes and packages and at the same ...

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Groovy and Grails Recipes

by Bashar Abdul-Jawad

CHAPTER 4Object-Oriented Groovy

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