| /* |
| * ==================================================================== |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| package org.apache.hc.core5.concurrent; |
| |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.hc.core5.annotation.Contract; |
| import org.apache.hc.core5.annotation.ThreadingBehavior; |
| |
| /** |
| * Immutable, completed future. |
| * |
| * @param <T> the future result type of an asynchronous operation. |
| * @since 5.0 |
| */ |
| @Contract(threading = ThreadingBehavior.IMMUTABLE) |
| public class CompletedFuture<T> implements Future<T>, Cancellable { |
| |
| private final T result; |
| |
| public CompletedFuture(final T result) { |
| super(); |
| this.result = result; |
| } |
| |
| @Override |
| public boolean isCancelled() { |
| return false; |
| } |
| |
| @Override |
| public boolean isDone() { |
| return true; |
| } |
| |
| @Override |
| public T get() { |
| return this.result; |
| } |
| |
| @Override |
| public T get(final long timeout, final TimeUnit unit) { |
| return this.result; |
| } |
| |
| @Override |
| public boolean cancel(final boolean mayInterruptIfRunning) { |
| return false; |
| } |
| |
| @Override |
| public boolean cancel() { |
| return false; |
| } |
| |
| } |