org.smallibs.concurrent.promise.impl.SolvedPromise Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of hpas Show documentation

Functional ADT And Asynchronous library in Java

There is a newer version: 0.11.0

/*
 * HPAS
 * https://github.com/d-plaindoux/hpas
 *
 * Copyright (c) 2016-2017 Didier Plaindoux
 * Licensed under the LGPL2 license.
 */

package org.smallibs.concurrent.promise.impl;

import org.smallibs.data.Try;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.function.Consumer;

public final class SolvedPromise extends AbstractPromise {

    private final Try value;

    public SolvedPromise(Try value) {
        this.value = value;
    }

    @Override
    public Future getFuture() {
        return new Future() {
            @Override
            public boolean cancel(boolean mayInterruptIfRunning) {
                return false;
            }

            @Override
            public boolean isCancelled() {
                return false;
            }

            @Override
            public boolean isDone() {
                return true;
            }

            @Override
            public T get() throws InterruptedException, ExecutionException {
                return value.orElseThrow(t -> new ExecutionException(t));
            }

            @Override
            public T get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
                return get();
            }
        };
    }

    @Override
    public void onSuccess(Consumer consumer) {
        value.onSuccess(consumer);
    }

    @Override
    public void onFailure(Consumer consumer) {
        value.onFailure(consumer);
    }

    @Override
    public void onComplete(Consumer> consumer) {
        consumer.accept(value);
    }
}