In object-oriented programming, a central program normally controls other objects in a module, library, or framework.
With dependency injection, this pattern is inverted—a reference to a service is placed directly into the object which eases testing and modularity. Spring or Google Guice use dependency injection so you can focus on your core application and let the framework handle infrastructural concerns.
Dependency Injection explores the DI idiom in fine detail, with numerous practical examples that show you the payoffs.
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You'll apply key techniques in Spring and Guice and learn important pitfalls, corner-cases, and design patterns. Prasanna is a Google software engineer who works on Google Wave and represents Google on several Java expert groups.
Dependency Injection Design patterns using Spring and Guice. Prasanna Foreword by Bob Lee. Table of Contents detailed table of contents. Every solution needs a problem. Dependency injection in the real world.
Time for injection 2. Constructing objects with dependency injection. Metadata and injector configuration. Identifying dependencies for injection. Separating infrastructure and application logic. Not all at once: Injecting objects in sealed code. Building modular applications 4.
Understanding the role of an object. Separation of concerns my pants are too tight! The no scope or default scope. More use cases in scoping 6.
Defining a custom scope.
Google I/O 2009 - Big Modular Java with Guice
Pitfalls and corner cases in scoping. Leveraging the power of scopes. From birth to death: Significant events in the life of objects. A real-world lifecycle scenario: Lifecycle and lazy instantiation.
Dhanji R. Prasanna enjoys thinking about languages, technology and design. He formerly worked at Google as a member of the Wave and Google+ teams, where he worked on. Dhanji R. Prasanna is a Google soft ware engineer who works on Google Wave and represents Google on several Java expert groups. He contributes to Guice. On Wed, Feb 25, at PM, Dhanji R. Prasanna wrote: You will need to call watch() for IDLE to start. again to resume IDLEing. With dependency injection, Dhanji R. Prasanna is a Google software engineer who works on Google Wave and represents Google on several Java expert groups.
Customizing lifecycle with postprocessing. Customizing lifecycle with multicasting. Intercepting methods and AOP. Enterprise use cases click interception. Pitfalls and assumptions about interception and proxying. Best practices in code design 9. Integrating with third-party frameworks Fragmentation of DI solutions. Lessons for framework designers. Programmatic configuration to the rescue. Dependency injection in action!
Tying up to the web lifecycle. SmartyPants for Adobe Flex. What's inside How to apply it Understand it first! About the reader Readers need a working knowledge of Java but no prior experience with DI is Dhanji R Prasanna Resume.
About the author Dhanji R. Dependency Injection combo added to cart. Dependency Injection eBook added to cart.