org.elasticsearch.common.inject.spi
Class Dependency<T>

java.lang.Object
  org.elasticsearch.common.inject.spi.Dependency<T>

public final class Dependency<T>
extends Object

A variable that can be resolved by an injector.

Use get(org.elasticsearch.common.inject.Key) to build a freestanding dependency, or InjectionPoint to build one that's attached to a constructor, method or field.

Since:

2.0

Author:

crazybob@google.com (Bob Lee), jessewilson@google.com (Jesse Wilson)

Method Summary

boolean	equals(Object o)
static Set<Dependency<?>>	forInjectionPoints(Set<InjectionPoint> injectionPoints) Returns the dependencies from the given injection points.
static <T> Dependency<T>	get(Key<T> key) Returns a new dependency that is not attached to an injection point.
InjectionPoint	getInjectionPoint() Returns the injection point to which this dependency belongs, or null if this dependency isn't attached to a particular injection point.
Key<T>	getKey() Returns the key to the binding that satisfies this dependency.
int	getParameterIndex() Returns the index of this dependency in the injection point's parameter list, or -1 if this dependency does not belong to a parameter list.
int	hashCode()
boolean	isNullable() Returns true if null is a legal value for this dependency.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

get

public static <T> Dependency<T> get(Key<T> key)

Returns a new dependency that is not attached to an injection point. The returned dependency is nullable.

forInjectionPoints

public static Set<Dependency<?>> forInjectionPoints(Set<InjectionPoint> injectionPoints)

Returns the dependencies from the given injection points.

getKey

public Key<T> getKey()

Returns the key to the binding that satisfies this dependency.

isNullable

public boolean isNullable()

Returns true if null is a legal value for this dependency.

getInjectionPoint

public InjectionPoint getInjectionPoint()

Returns the injection point to which this dependency belongs, or null if this dependency isn't attached to a particular injection point.

getParameterIndex

public int getParameterIndex()

Returns the index of this dependency in the injection point's parameter list, or -1 if this dependency does not belong to a parameter list. Only method and constuctor dependencies are elements in a parameter list.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object