ptolemy.domains.gr.kernel

Class GRReceiver

java.lang.Object

ptolemy.actor.AbstractReceiver

ptolemy.actor.Mailbox

ptolemy.domains.gr.kernel.GRReceiver

All Implemented Interfaces:

Receiver

public class GRReceiver
extends Mailbox

The receiver for the GR domain. This receiver is a mailbox with capacity one, and any token put in the receiver overwrites any token previously present in the receiver. As a consequence, the hasRoom() method always returns true. The get() method will consume the token if there exists one. After the consumption, the hasToken() method will return false, until a token is put into this receiver.

Since:

Ptolemy II 1.0

Version:

$Id$

Author:

C. Fong

See Also:

Mailbox

Pt.AcceptedRating:

yellow (vogel)

Pt.ProposedRating:

yellow (chf)

Field Summary

Fields inherited from class ptolemy.actor.Mailbox

_token

Constructor Summary

Constructors

Constructor and Description
GRReceiver() Construct an empty GRReceiver with no container.
GRReceiver(IOPort container) Construct an empty GRReceiver with the specified container.

Method Summary

Modifier and Type	Method and Description
boolean	hasRoom() Return true, since the new token will override the old one.
void	put(Token token) Put a token into this receiver.

Methods inherited from class ptolemy.actor.Mailbox

clear, elementList, get, hasRoom, hasToken, hasToken

Methods inherited from class ptolemy.actor.AbstractReceiver

getArray, getContainer, getCurrentTime, getModelTime, isKnown, putArray, putArrayToAll, putToAll, reset, setContainer, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

GRReceiver

public GRReceiver()

Construct an empty GRReceiver with no container.

GRReceiver

public GRReceiver(IOPort container)
           throws IllegalActionException

Construct an empty GRReceiver with the specified container.

Parameters:

container - The port that contains the receiver.

Throws:

IllegalActionException - If this receiver cannot be contained by the proposed container.

Method Detail

hasRoom

public boolean hasRoom()

Return true, since the new token will override the old one.

Specified by:

hasRoom in interface Receiver

Overrides:

hasRoom in class Mailbox

Returns:

True.

put

public void put(Token token)
         throws NoRoomException

Put a token into this receiver. If the argument is null, then this receiver will not contain a token after this method returns. If the receiver already has a token, then the new token will override the old token, and the old token will be lost.

Specified by:

put in interface Receiver

Overrides:

put in class Mailbox

Parameters:

token - The token to be put into this receiver.

Throws:

NoRoomException - Not thrown in this base class