install allows for composition: Within its configure method, FooModule may install FooServiceModule (for instance). This would mean that an Injector created based only on FooModule will include bindings and providers in both FooModule and FooServiceModule. You may see install used to split a Module into logical sub-modules for ease of readability or testing, or for … Read more
Yes, it will work fine. In fact the author of guice (Bob Lee) is a spec-lead for the javax.inject specification. javax.inject.Inject does not have the optional attribute, so if you want an optional dependency, you’d have to use the guice annotation.
Guice integration with Jersey has not stagnated. The opposite is true. Thanks to Paul and his cohorts behind Jersey, the latest 1.7 release contains a special JerseyServletModule class to work with Guice-based servlets. Guice-based constructor injection into JAX-RS resource works! The issue is using JAX-RS annotations such as @QueryParam in the constructor of a JAX-RS … Read more
You can just add the @Inject annotation to your init() method. It will get run automatically after the object is instantiated.
It’s important to acknowledge that Dagger was created after Guice, by one of Guice’s creators (“Crazy Bob” Lee) who had moved to Square: Rod Johnson originally released Spring in October 2002 with his book Expert One-on-One J2EE Design and Development; Spring was then released publicly on the Apache license in June 2003 and as v1.0 … Read more
Check the javadoc of FactoryModuleBuilder class. AssistedInject allows you to dynamically configure Factory for class instead of coding it by yourself. This is often useful when you have an object that has a dependencies that should be injected and some parameters that must be specified during creation of object. Example from the documentation is a … Read more
injector.getInstance(Key.get(String.class, Names.named(“annotation”)));
You may want to include Spring in your list of Dependency Injection frameworks you are considering. Here are some answers to your questions: Coupling to the framework Pico – Pico tends to discourage setter injection but other than that, your classes don’t need to know about Pico. It’s only the wiring that needs to know … Read more
This might not be the answer you’re looking for, but if you’re writing unit tests, you probably shouldn’t be using an injector and rather be injecting mock or fake objects by hand. On the other hand, if you really want to replace a single binding, you could use Modules.override(..): public class ProductionModule implements Module { … Read more