org.smallibs.concurrent.execution.impl.ExecutorImpl 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.execution.impl;

import org.smallibs.concurrent.execution.Executor;
import org.smallibs.concurrent.promise.Promise;
import org.smallibs.concurrent.promise.impl.RunnablePromise;
import org.smallibs.data.Unit;

import java.util.Objects;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;

/**
 * Asynchronous execution media
 */
public final class ExecutorImpl implements Executor {

    /**
     * Underlying executor service
     */
    private final ExecutorService executorService;

    /**
     * Constructor
     *
     * @param executorService The executor service used for asynchronous operation
     */
    public ExecutorImpl(ExecutorService executorService) {
        this.executorService = executorService;
    }

    @Override
    public  Promise async(Callable task) {
        Objects.requireNonNull(task);

        final RunnablePromise runnablePromise = new RunnablePromise<>(task);

        this.executorService.execute(runnablePromise);
        return runnablePromise;
    }

    @Override
    public Promise async(RunnableWithError task) {
        Objects.requireNonNull(task);

        final RunnablePromise runnablePromise = new RunnablePromise<>(() -> {
            task.run();
            return Unit.unit;
        });

        this.executorService.execute(runnablePromise);
        return runnablePromise;
    }
}