org.nustaq.kontraktor

Class Promise<T>

java.lang.Object

org.nustaq.kontraktor.Promise<T>

All Implemented Interfaces:

Serializable, Callback<T>, Future<T>

public class Promise<T>
extends Object
implements Future<T>

Created by ruedi on 20.05.14.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Object	error
protected boolean	hadResult
protected boolean	hasFired
protected Object	result
protected Callback	resultReceiver

Fields inherited from interface org.nustaq.kontraktor.Callback

CONT, FIN, FINSILENT

Constructor Summary

Constructors

Constructor and Description
Promise()
Promise(T result)
Promise(T result, Object error)

Method Summary

Modifier and Type	Method and Description
boolean	_isHadResult()
boolean	_isHasFired()
void	finishWith(Callback resultCB) same as then, but avoid creation of new future
Object	getError()
String	getId()
Promise	getLast()
Promise	getNext() special method for tricky things.
T	getResult()
<OUT> Future<OUT>	map(Filter<T,OUT> filter)
void	receive(Object res, Object error)
Promise<T>	setId(String id)
void	signal() same as receive(null,null)
Future	then(Callback resultCB)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

result

protected Object result

error

protected Object error

resultReceiver

protected Callback resultReceiver

hadResult

protected boolean hadResult

hasFired

protected boolean hasFired

Constructor Detail

Promise

public Promise(T result,
               Object error)

Promise

public Promise(T result)

Promise

public Promise()

Method Detail

getId

public String getId()

setId

public Promise<T> setId(String id)

map

public <OUT> Future<OUT> map(Filter<T,OUT> filter)

Specified by:

map in interface Future<T>

then

public Future then(Callback resultCB)

Specified by:

then in interface Future<T>

getNext

public Promise getNext()

special method for tricky things. Creates a nextFuture or returns it. Not threadsafe ! current

Returns:

getLast

public Promise getLast()

finishWith

public void finishWith(Callback resultCB)

same as then, but avoid creation of new future

Parameters:

resultCB -

receive

public final void receive(Object res,
                          Object error)

Specified by:

receive in interface Callback<T>

getResult

public T getResult()

Specified by:

getResult in interface Future<T>

Returns:

result if already avaiable

signal

public void signal()

Description copied from interface: Future

same as receive(null,null)

Specified by:

signal in interface Future<T>

getError

public Object getError()

Specified by:

getError in interface Future<T>

_isHadResult

public boolean _isHadResult()

_isHasFired

public boolean _isHasFired()

toString

public String toString()

Overrides:

toString in class Object