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Petite
Petite is one great little IoC container and components manager. Petite is easy to use since it requires no external configuration; it is incredibly fast, lightweight and super-small; so anyone can quickly grasp how it works. Petite is quite extensible and open for customization; and non-invasive.
The following bean shows some basic Petite usage:
@PetiteBean
public class Foo {
// dependency injected in the ctor
@PetiteInject
public Foo(ServiceOne one) {...}
// dependency injected in a field
@PetiteInject("serviceTwo")
ServiceTwo two;
// dependency injected with the method
@PetiteInject
public void injectService(ServiceThree three) {...}
// dependency injected with the method
public void injectService(
@PetiteInject ServiceFour four) {...}
// initialization method
@PetiteInitMethod
public void init() {...}
public void foo() {
}
}
Foo is Petite bean that defines several injection points, for different depending services from the container. Put this bean in the classpath and let PetiteContainer find it and register as a bean. Or register it manually if you like that way more.Petite is one of the lightest Java DI container around. Still, it supports sufficient most of features offered by other containers.
Here are the key features:
- property, method and constructor injection points.
- Instance life-cycle management, ordered initialization methods.
- Adding external objects to container.
- Wiring external objects with container's context.
- Creating objects by container.
- Automatic registration: no XML or code needed, just annotations.
- Programmatic configuration: using plain Java.
- Scopes: Prototype, Singleton and custom scopes.
- Thread local scope for thread singletons.
- HTTP session scope for session singletons.
- Designed to be extended.
Last modified 2yr ago