Google Guice

Google guice It’s easy © Skelia 201 1

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

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

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

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

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.

Google Guice © Skelia 2011

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

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)

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

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)

Google Guice (Scope) © Skelia 2011

Google Guice (AOP) © Skelia 2011

Google Guice (Sample) © Skelia 2011

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

http://jug-lviv.blogspot.com	974
http://www.rozrobka.com	254
http://www.jug-lviv.blogspot.com	2

Google Guice

by Andriy Andrunevchyn on May 02, 2011

Accessibility

Categories

Tags

Upload Details

Usage Rights

3 Embeds 1,230

Statistics

Google Guice — Presentation Transcript