com.sun.xml.ws.rx.util.DelayedReference Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2022 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.ws.rx.util;
import java.util.concurrent.Delayed;
import java.util.concurrent.TimeUnit;
/**
*
* A generic immutable reference holder that implements {@link Delayed} interface
* and thus is suitable for use in a {@link java.util.concurrent.DelayQueue}
* instances.
*
*
*
* Instances of this {@code DelayedReference} class work with a milliseconds precision.
*
*
*/
public class DelayedReference implements Delayed {
private final V data;
private final long resumeTimeInMilliseconds;
private DelayedReference(V data, long resumeTimeInMilliseconds) {
this.data = data;
this.resumeTimeInMilliseconds = resumeTimeInMilliseconds;
}
public DelayedReference(V data, long delay, TimeUnit timeUnit) {
this(data, timeUnit.toMillis(delay) + System.currentTimeMillis());
}
public V getValue() {
return data;
}
@Override
public long getDelay(TimeUnit unit) {
return unit.convert(resumeTimeInMilliseconds - System.currentTimeMillis(), TimeUnit.MILLISECONDS);
}
@Override
public int compareTo(Delayed other) {
long thisDelay = resumeTimeInMilliseconds - System.currentTimeMillis();
long thatDelay = other.getDelay(TimeUnit.MILLISECONDS);
return Long.compare(thisDelay, thatDelay);
}
public DelayedReference updateData(V data) {
return new DelayedReference<>(data, resumeTimeInMilliseconds);
}
public DelayedReference updateDelay(long newDelay, TimeUnit timeUnit) {
return new DelayedReference<>(data, timeUnit.toMillis(newDelay) + System.currentTimeMillis());
}
}