38 lines
1.2 KiB
Java
38 lines
1.2 KiB
Java
/**
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* Copyright (C) 2009-2012 Typesafe Inc. <http://www.typesafe.com>
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*/
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package docs.transactor;
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//#class
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import akka.actor.*;
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import akka.transactor.*;
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import scala.concurrent.stm.Ref;
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import scala.concurrent.stm.japi.STM;
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public class CoordinatedCounter extends UntypedActor {
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private Ref.View<Integer> count = STM.newRef(0);
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public void onReceive(Object incoming) throws Exception {
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if (incoming instanceof Coordinated) {
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Coordinated coordinated = (Coordinated) incoming;
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Object message = coordinated.getMessage();
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if (message instanceof Increment) {
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Increment increment = (Increment) message;
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if (increment.hasFriend()) {
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increment.getFriend().tell(coordinated.coordinate(new Increment()));
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}
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coordinated.atomic(new Runnable() {
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public void run() {
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STM.increment(count, 1);
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}
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});
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}
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} else if ("GetCount".equals(incoming)) {
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getSender().tell(count.get());
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} else {
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unhandled(incoming);
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}
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}
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}
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//#class
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