/interpreter/tags/at2-build060407/src/edu/vub/at/actors/natives/NATLocalFarRef.java
http://ambienttalk.googlecode.com/ · Java · 73 lines · 26 code · 8 blank · 39 comment · 0 complexity · 5fedf2951de9ed7b221311f0b456c792 MD5 · raw file
- /**
- * AmbientTalk/2 Project
- * NATLocalFarRef.java created on 22-dec-2006 at 11:34:15
- * (c) Programming Technology Lab, 2006 - 2007
- * Authors: Tom Van Cutsem & Stijn Mostinckx
- *
- * Permission is hereby granted, free of charge, to any person
- * obtaining a copy of this software and associated documentation
- * files (the "Software"), to deal in the Software without
- * restriction, including without limitation the rights to use,
- * copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following
- * conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
- * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- */
- package edu.vub.at.actors.natives;
- import edu.vub.at.actors.ATAsyncMessage;
- import edu.vub.at.actors.id.ATObjectID;
- import edu.vub.at.exceptions.InterpreterException;
- import edu.vub.at.objects.ATObject;
- import edu.vub.at.objects.ATStripe;
- import edu.vub.at.objects.ATTable;
- import edu.vub.at.objects.natives.NATNil;
- import edu.vub.at.objects.natives.NATTable;
- /**
- * Instances of NATLocalFarRef denote far references to objects 'local' to this address space.
- * That is, the far object is hosted by a local actor and hence message transmission is not subject
- * to network routing or partial failure and messages may be immediately scheduled in the inbox of
- * the recipient object's host actor.
- *
- * @author tvcutsem
- */
- public class NATLocalFarRef extends NATFarReference {
- /** when serializing a far reference, the event loop stays home */
- private transient final ELActor farObjectHost_;
-
- public NATLocalFarRef(ELActor farObjectHost, ATObjectID objectId, ATStripe[] stripes, ELActor myHost) {
- super(objectId, stripes, myHost);
- farObjectHost_ = farObjectHost;
- }
- protected ATObject transmit(ATAsyncMessage passedMessage) throws InterpreterException {
- farObjectHost_.event_localAccept(this, new Packet(passedMessage.toString(), passedMessage));
- return NATNil._INSTANCE_;
- }
-
- /**
- * The 'outbox' of a far reference to a local actor is always empty.
- */
- public ATTable meta_retractUnsentMessages() throws InterpreterException {
- return NATTable.EMPTY;
- }
-
- public ELActor getFarHost() {
- return farObjectHost_;
- }
- }