29 lines
688 B
Java
29 lines
688 B
Java
|
/**
|
||
|
|
* Copyright (C) 2009-2011 Typesafe Inc. <http://www.typesafe.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
package akka.docs.transactor;
|
||
|
|
|
||
|
|
//#class
|
||
|
|
import akka.transactor.*;
|
||
|
|
import scala.concurrent.stm.*;
|
||
|
|
|
||
|
|
public class Counter extends UntypedTransactor {
|
||
|
|
Ref<Integer> count = Stm.ref(0);
|
||
|
|
|
||
|
|
public void atomically(InTxn txn, Object message) {
|
||
|
|
if (message instanceof Increment) {
|
||
|
|
Integer newValue = count.get(txn) + 1;
|
||
|
|
count.set(newValue, txn);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override public boolean normally(Object message) {
|
||
|
|
if ("GetCount".equals(message)) {
|
||
|
|
getSender().tell(count.single().get());
|
||
|
|
return true;
|
||
|
|
} else return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//#class
|