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package javax.ejb;
import java.io.Serializable;
import java.util.concurrent.*;
/**
* Wraps the result of an asynchronous method call as a Future
* object, preserving compatability with the business interface signature.
*
* The value specified in the constructor will be retrieved by the container
* and made available to the client.
*
* Note that this object is not passed to the client. It is
* merely a convenience for providing the result value to the container.
* Therefore, none of its instance methods should be called by the
* application.
*
* @since EJB 3.1
*/
public final class AsyncResult implements Future {
private final V resultValue;
/**
* Creates a AsyncResult instance to wrap the result of an
* asynchronous method call
*
* @param result the result of an asynchronous method call to be made
* available to the client
*/
public AsyncResult(V result) {
resultValue = result;
}
/**
* This method should not be called. See Class-level comments.
*/
@Override
public boolean cancel(boolean mayInterruptIfRunning) {
throw new java.lang.IllegalStateException
("Object does not represent an acutal Future");
}
/**
* This method should not be called. See Class-level comments.
*/
@Override
public boolean isCancelled() {
throw new java.lang.IllegalStateException
("Object does not represent an acutal Future");
}
/**
* This method should not be called. See Class-level comments.
*/
@Override
public boolean isDone() {
throw new java.lang.IllegalStateException
("Object does not represent an acutal Future");
}
/**
* This method should not be called. See Class-level comments.
*/
@Override
public V get() throws InterruptedException, ExecutionException {
return resultValue;
}
/**
* This method should not be called. See Class-level comments.
*/
@Override
public V get(long timeout, TimeUnit unit)
throws InterruptedException, ExecutionException, TimeoutException {
throw new java.lang.IllegalStateException
("Object does not represent an acutal Future");
}
}