/*
* Copyright (c) 2011-2013 The original author or authors
* ------------------------------------------------------
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Apache License v2.0 which accompanies this distribution.
*
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* The Apache License v2.0 is available at
* http://www.opensource.org/licenses/apache2.0.php
*
* You may elect to redistribute this code under either of these licenses.
*/
package io.vertx.core.impl;
import io.vertx.core.AsyncResult;
import io.vertx.core.Future;
import io.vertx.core.Handler;
/**
* @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
*/
public class FailedFuture<T> implements Future<T> {
private final Throwable cause;
/**
* Create a future that has already failed
* @param t the throwable
*/
FailedFuture(Throwable t) {
cause = t != null ? t : new NoStackTraceThrowable(null);
}
/**
* Create a future that has already failed
* @param failureMessage the failure message
*/
FailedFuture(String failureMessage) {
this(new NoStackTraceThrowable(failureMessage));
}
@Override
public boolean isComplete() {
return true;
}
@Override
public Future<T> setHandler(Handler<AsyncResult<T>> handler) {
handler.handle(this);
return this;
}
@Override
public void complete(T result) {
throw new IllegalStateException("Result is already complete: failed");
}
@Override
public void complete() {
throw new IllegalStateException("Result is already complete: failed");
}
@Override
public void fail(Throwable cause) {
throw new IllegalStateException("Result is already complete: failed");
}
@Override
public void fail(String failureMessage) {
throw new IllegalStateException("Result is already complete: failed");
}
@Override
public boolean tryComplete(T result) {
return false;
}
@Override
public boolean tryComplete() {
return false;
}
@Override
public boolean tryFail(Throwable cause) {
return false;
}
@Override
public boolean tryFail(String failureMessage) {
return false;
}
@Override
public T result() {
return null;
}
@Override
public Throwable cause() {
return cause;
}
@Override
public boolean succeeded() {
return false;
}
@Override
public boolean failed() {
return true;
}
@Override
public void handle(AsyncResult<T> asyncResult) {
throw new IllegalStateException("Result is already complete: failed");
}
@Override
public String toString() {
return "Future{cause=" + cause.getMessage() + "}";
}
}