com.epam.deltix.util.concurrent.CompletedFuture Maven / Gradle / Ivy

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/*
 * Copyright 2021 EPAM Systems, Inc
 *
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership. Licensed 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.
 */
package com.epam.deltix.util.concurrent;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

public class CompletedFuture implements Future {
    private final T v;
    private final Throwable re;

    public CompletedFuture(T v, Throwable re) {
        this.v = v;
        this.re = re;
    }

    public boolean cancel(boolean mayInterruptIfRunning) {
        return false;
    }

    public boolean isCancelled() {
        return false;
    }

    public boolean isDone() {
        return true;
    }

    public T get() throws ExecutionException {
        if(this.re != null) {
            throw new ExecutionException(this.re);
        } else {
            return this.v;
        }
    }

    public T get(long timeout, TimeUnit unit) throws ExecutionException {
        return this.get();
    }
}