org.hyperic.util.callback
Class CallbackType

java.lang.Object
  org.hyperic.util.callback.CallbackType

public abstract class CallbackType
extends java.lang.Object

Field Summary

static CallbackType

RETURN_LAST RETURN_LAST is a callback type which invokes all listeners (or until one throws an exception) and returns the last value returned by the invoked method.

Constructor Summary

CallbackType()

Method Summary

abstract java.lang.Object

callListeners(java.lang.reflect.Method meth, java.lang.Object[] methArgs, java.util.Set listeners) This method is called by CallbackDispatcher to invoke listeners which are setup to be called back.

Methods inherited from class java.lang.Object

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

Field Detail

RETURN_LAST

public static final CallbackType RETURN_LAST

RETURN_LAST is a callback type which invokes all listeners (or until one throws an exception) and returns the last value returned by the invoked method. If no listeners are registered, a primitive value will be returned from the method.

Constructor Detail

CallbackType

public CallbackType()

Method Detail

callListeners

public abstract java.lang.Object callListeners(java.lang.reflect.Method meth,
                                               java.lang.Object[] methArgs,
                                               java.util.Set listeners)
                                        throws java.lang.Throwable

This method is called by CallbackDispatcher to invoke listeners which are setup to be called back.

Parameters:

meth - Method to invoke

methArgs - Arguments to the method

listeners - Set of Object listeners which support an invocation of 'meth'.

Throws:

java.lang.Throwable