groovyx.gpars.dataflow
Class DataCallback

java.lang.Object
  groovyx.gpars.serial.WithSerialId
      groovyx.gpars.actor.impl.MessageStream
          groovyx.gpars.dataflow.DataCallback

All Implemented Interfaces:

java.io.Serializable

public final class DataCallback
extends MessageStream

A helper class enabling the 'whenBound()' or 'getValAsync' functionality of a DataflowVariable and DataflowQueue, as well as 'sendAndContinue()' on actors. A task that waits asynchronously on the DFV to be bound. Once the DFV is bound, upon receiving the message the actor runs the supplied closure / code with the DFV value as a parameter.

Author:

Vaclav Pech, Alex Tkachman Date: Sep 13, 2009

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class groovyx.gpars.actor.impl.MessageStream

MessageStream.RemoteMessageStream, MessageStream.SendTo

Field Summary

private groovy.lang.Closure	code
private PGroup	parallelGroup
private static long	serialVersionUID

Fields inherited from class groovyx.gpars.serial.WithSerialId

serialHandle

Constructor Summary

DataCallback(groovy.lang.Closure code, PGroup pGroup)

Method Summary

MessageStream

send(java.lang.Object message) Sends a message back to the DataCallback.

Methods inherited from class groovyx.gpars.actor.impl.MessageStream

call, getRemoteClass, leftShift, send, send, sendAndWait, sendAndWait, sendAndWait

Methods inherited from class groovyx.gpars.serial.WithSerialId

createRemoteHandle, getOrCreateSerialHandle, writeReplace

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

code

private final groovy.lang.Closure code

parallelGroup

private final PGroup parallelGroup

Constructor Detail

DataCallback

public DataCallback(groovy.lang.Closure code,
                    PGroup pGroup)

Parameters:

code - The closure to run

pGroup - pGroup The parallel group to join

Method Detail

send

public MessageStream send(java.lang.Object message)

Sends a message back to the DataCallback. Will schedule processing the internal closure with the thread pool Registers its parallel group with DataflowExpressions for nested 'whenBound' handlers to use the same group.

Specified by:

send in class MessageStream

Parameters:

message - message to send

Returns:

always return message stream itself