org.apache.ode.utils

Class WatchDog.DefaultObserver<A>

java.lang.Object

org.apache.ode.utils.WatchDog.DefaultObserver<A>

All Implemented Interfaces:

WatchDog.Observer<A>

Enclosing class:

WatchDog<T,C extends WatchDog.Observer>

public static class WatchDog.DefaultObserver<A>
extends java.lang.Object
implements WatchDog.Observer<A>

A default implementation of #ChangeHandler. Delete and Update will both invoke the #init method which satifies most use cases. So subclasses may simply override the #init method to fit their own needs.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.concurrent.locks.ReadWriteLock	lock
protected A	object

Constructor Summary

Constructors

Constructor and Description
WatchDog.DefaultObserver()

Method Summary

Methods

Modifier and Type	Method and Description
A	get()
java.util.concurrent.locks.Lock	getLock()
void	init() empty implementation
boolean	isInitialized()
void	onDelete() delegate to #init
void	onUpdate() delegate to #init
void	reset()

Methods inherited from class java.lang.Object

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

Field Detail

lock

protected final java.util.concurrent.locks.ReadWriteLock lock

object

protected A object

Constructor Detail

WatchDog.DefaultObserver

public WatchDog.DefaultObserver()

Method Detail

isInitialized

public boolean isInitialized()

Specified by:

isInitialized in interface WatchDog.Observer<A>

Returns:

true if the wrapped if not null

init

public void init()

empty implementation

Specified by:

init in interface WatchDog.Observer<A>

reset

public void reset()

Specified by:

reset in interface WatchDog.Observer<A>

onDelete

public void onDelete()

delegate to #init

Specified by:

onDelete in interface WatchDog.Observer<A>

onUpdate

public void onUpdate()

delegate to #init

Specified by:

onUpdate in interface WatchDog.Observer<A>

getLock

public java.util.concurrent.locks.Lock getLock()

Specified by:

getLock in interface WatchDog.Observer<A>

get

public A get()

Specified by:

get in interface WatchDog.Observer<A>