org.nustaq.kontraktor

Class Spore<I,O>

java.lang.Object

org.nustaq.kontraktor.Spore<I,O>

All Implemented Interfaces:

Serializable, Cloneable

public abstract class Spore<I,O>
extends Object
implements Serializable, Cloneable

A Spore is sent to a foreign actor executes on its data and sends results back to caller.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Callback	cb
protected boolean	finished

Constructor Summary

Constructors

Constructor and Description
Spore()

Method Summary

Modifier and Type	Method and Description
Spore	clone()
void	complete(O res, Object err) to called from remote site.
void	finish() to be called at remote side when using streaming to deliver multiple results, call this in order to signal no further results are expected.
boolean	isFinished() to be read at remote side in order to decide wether to stop e.g.
Spore<I,O>	onFinish(Runnable toRun)
abstract void	remote(I input) implements code to be executed at receiver side
void	setExpectedFinishCount(int count)
Spore<I,O>	setForEach(Callback<O> cb) use local (sender side).
protected void	stream(O result)
protected void	streamError(Object err) note that sending an error implicitely will close the backstream.

Methods inherited from class java.lang.Object

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

Field Detail

cb

protected Callback cb

finished

protected transient volatile boolean finished

Constructor Detail

Spore

public Spore()

Method Detail

setExpectedFinishCount

public void setExpectedFinishCount(int count)

remote

public abstract void remote(I input)

implements code to be executed at receiver side

Parameters:

input -

setForEach

public Spore<I,O> setForEach(Callback<O> cb)

use local (sender side). Register and receive data streamed back from remote spore execution.

Parameters:

cb -

onFinish

public Spore<I,O> onFinish(Runnable toRun)

finish

public void finish()

to be called at remote side when using streaming to deliver multiple results, call this in order to signal no further results are expected.

streamError

protected void streamError(Object err)

note that sending an error implicitely will close the backstream.

Parameters:

err -

stream

protected void stream(O result)

complete

public void complete(O res,
                     Object err)

to called from remote site. directly send stuff to remote site via callback. Warning: prefer stream(), streamError() and finish(). this can be used for generic exception catching etc. Take care to not accidentally introduce multithreading .. Any error != 'CONT' will shut down the backchannel to remote callee afterwards.

Parameters:

res -

err -

isFinished

public boolean isFinished()

to be read at remote side in order to decide wether to stop e.g. iteration.

Returns:

clone

public Spore clone()

Overrides:

clone in class Object