Package org.int4.dirk.spi.instantiation

Class InjectionTargetExtension<T,E>

java.lang.Object

org.int4.dirk.spi.instantiation.InjectionTargetExtension<T,E>

Type Parameters:

T - the type handled

E - the element type required

public class InjectionTargetExtension<T,E>
extends java.lang.Object

An interface to allow for custom handling of injection targets of type T. The target class must be an interface with at least one type variable.

Whenever an injection target of type T needs injection this extension will be called to provide the actual value.

Constructor Summary

Constructors

Constructor	Description
InjectionTargetExtension(java.lang.reflect.TypeVariable<java.lang.Class<T>> elementTypeVariable, Resolution resolution, InstanceProvider<T,E> instanceProvider)	Constructs a new instance.

Method Summary

Modifier and Type	Method	Description
java.lang.reflect.TypeVariable<java.lang.Class<T>>	getElementTypeVariable()	Returns a TypeVariable which represents the element type E.
InstanceProvider<T,E>	getInstanceProvider()	Returns the InstanceProvider that can create the type handled by this extension.
Resolution	getResolution()	Returns how the injection target should be resolved.
java.lang.Class<T>	getTargetClass()	Returns the target class that is handled by this extension.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InjectionTargetExtension

public InjectionTargetExtension(java.lang.reflect.TypeVariable<java.lang.Class<T>> elementTypeVariable,
                                Resolution resolution,
                                InstanceProvider<T,E> instanceProvider)

Constructs a new instance.

Parameters:

elementTypeVariable - a TypeVariable which represents the element type E, cannot be null

resolution - a Resolution, cannot be null

instanceProvider - an InstanceProvider, cannot be null

Method Detail

getTargetClass

public final java.lang.Class<T> getTargetClass()

Returns the target class that is handled by this extension.

Returns:

a Class, never null

getInstanceProvider

public final InstanceProvider<T,E> getInstanceProvider()

Returns the InstanceProvider that can create the type handled by this extension.

Returns:

an InstanceProvider, never null

getElementTypeVariable

public final java.lang.reflect.TypeVariable<java.lang.Class<T>> getElementTypeVariable()

Returns a TypeVariable which represents the element type E.

Returns:

a TypeVariable, never null

getResolution

public final Resolution getResolution()

Returns how the injection target should be resolved. This determines what kind of restrictions are applied when an injection target of this type is added to an injector. When eager, restrictions are enforced before the injector is modified. When lazy, use of the Instance may result in errors if the required types are not available.

Returns:

a Resolution, never null