The document discusses Google Guice, an open source framework for dependency injection in Java. It provides an overview of dependency injection and what problem it aims to solve. The document then covers the key aspects of Google Guice, including how to define bindings between interfaces and implementations, different types of injections, and how to integrate Guice into applications and with other frameworks.

1. Google guice It’s easy © Skelia 201 1

2. Agenda Pattern Dependency injection Why we need DI Google guice introduction Guice simple injection Integration with Servlets Integration with Guice Philosophy Instead of summary Q&A © Skelia 2011

3. DI or Don't Call Me, I Will Call You Dependency injection ( DI ) in object-oriented computer programming is a technique that indicates to a part of a program which other parts it can use, i.e. to supply an external dependency – a reference – to a software component . In technical terms, it is a design pattern that separates behavior from dependency resolution , thus decoupling highly dependent components. © Skelia 2011 Wikipedia: http://en.wikipedia.org/wiki/Dependency_injection

4. DI or Don't Call Me, I Will Call You Dependency injection ( DI ) in object-oriented computer programming is a technique that indicates to a part of a program which other parts it can use, i.e. to supply an external dependency – a reference – to a software component . In technical terms, it is a design pattern that separates behavior from dependency resolution , thus decoupling highly dependent components. © Skelia 2011 Wikipedia: http://en.wikipedia.org/wiki/Dependency_injection

5. DI or Don't Call Me, I Will Call You © Skelia 2011

6. DI or Don't Call Me, I Will Call You © Skelia 2011 Wild programmer Spaghetti Architecture

7. Google Guice © Skelia 2011 Google-Guice Current version 3.0 Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 5 and above, brought to you by Google.

8. Google Guice © Skelia 2011

9. Google Guice (Module) © Skelia 2011 Module Types: Non-obvious AbstractModule ServletModule

10. Google Guice (Binding) © Skelia 2011 Binding types: Bind implementation bind(PaymentCashImpl.class) Bind implementation to interface bind(Payment.class).to(PaymentCardImpl.class) Bind multiple implementation to interface bind(Payment.class).annotatedWith(Cash.class).to(PaymentCashImpl.class) bind(Payment.class).annotatedWith(Names.named("Cash")).to(PaymentCashImpl.class)

11. Google Guice (Injection) © Skelia 2011 Injection types : Constructor Method Field (not recommended) @Inject private @Card Payment payment; @ Named("PaymentType") @Inject private String text;

12. Google Guice (Provides) © Skelia 2011 public class PayModule extends AbstractModule{ protected void configure() { } @Provides Payment providePayment(){ CashPayment pay = new CashPayment(); pay.setAmount(100); return pay; } @Provides List<String> providesListOfString() { return new ArrayList<String>(); } @Inject public void setList(List<String> list)

13. Google Guice (Scope) © Skelia 2011

14. Google Guice (AOP) © Skelia 2011

15. Google Guice (Sample) © Skelia 2011

16. Google Guice (Servlet integration) © Skelia 2011

17. Google Guice (Sample) © Skelia 2011

18. Google Guice (Integration) © Skelia 2011 Mobile RoboGuice - Guice for Android. Other Languages Groovy-Guice - Groovy Ninject - .NET Snake Guice - Python Smartypants-IOC - Flex/AS3 Dawn - AS3

19. Google Guice (Integration) © Skelia 2011

20. Google Guice (philosophy) © Skelia 2011

21. Google Guice (philosophy) © Skelia 2011

22. Instead of Conclusion © Skelia 2011

23. Thank you ! © Skelia 2011