com.google.common.eventbus

Class EventSubscriber

java.lang.Object

com.google.common.eventbus.EventSubscriber

Direct Known Subclasses:

SynchronizedEventSubscriber

class EventSubscriber
extends java.lang.Object

Wraps a single-argument subscriber method on a specific object.

This class only verifies the suitability of the method and event type if something fails. Callers are expected to verify their uses of this class.

Two EventSubscribers are equivalent when they refer to the same method on the same object (not class). This property is used to ensure that no subscriber method is registered more than once.

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.reflect.Method	method Subscriber method.
private java.lang.Object	target Object sporting the subscriber method.

Constructor Summary

Constructors

Constructor and Description
EventSubscriber(java.lang.Object target, java.lang.reflect.Method method) Creates a new EventSubscriber to wrap method on @{code target}.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
java.lang.reflect.Method	getMethod()
java.lang.Object	getSubscriber()
void	handleEvent(java.lang.Object event) Invokes the wrapped subscriber method to handle event.
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

target

private final java.lang.Object target

Object sporting the subscriber method.

method

private final java.lang.reflect.Method method

Subscriber method.

Constructor Detail

EventSubscriber

EventSubscriber(java.lang.Object target,
                java.lang.reflect.Method method)

Creates a new EventSubscriber to wrap method on @{code target}.

Parameters:

target - object to which the method applies.

method - subscriber method.

Method Detail

handleEvent

public void handleEvent(java.lang.Object event)
                 throws java.lang.reflect.InvocationTargetException

Invokes the wrapped subscriber method to handle event.

Parameters:

event - event to handle

Throws:

java.lang.reflect.InvocationTargetException - if the wrapped method throws any Throwable that is not an Error (Error instances are propagated as-is).

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(@Nullable
                      java.lang.Object obj)

Overrides:

equals in class java.lang.Object

getSubscriber

public java.lang.Object getSubscriber()

getMethod

public java.lang.reflect.Method getMethod()