com.offbynull.voip.kademlia.model.Node.java Source code

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Here is the source code for com.offbynull.voip.kademlia.model.Node.java

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/*
 * Copyright (c) 2015, Kasra Faghihi, All rights reserved.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3.0 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.
 */
package com.offbynull.voip.kademlia.model;

import java.io.Serializable;
import java.util.Objects;
import org.apache.commons.lang3.Validate;

/**
 * Kademlia node. Contains an ID and a link.
 * <p>
 * Class is immutable.
 * @author Kasra Faghihi
 */
public final class Node implements Serializable {
    private static final long serialVersionUID = 1L;

    private final Id id;
    private final String link;

    /**
     * Constructs a {@link Node} object.
     * @param id ID of node
     * @param link link of node
     * @throws NullPointerException if any argument is {@code null}
     */
    public Node(Id id, String link) {
        Validate.notNull(id);
        Validate.notNull(link);
        this.id = id;
        this.link = link;
    }

    /**
     * Get this node's ID.
     * @return ID
     */
    public Id getId() {
        return id;
    }

    /**
     * Get this node's link.
     * @return link
     */
    public String getLink() {
        return link;
    }

    @Override
    public int hashCode() {
        int hash = 3;
        hash = 37 * hash + Objects.hashCode(this.id);
        hash = 37 * hash + Objects.hashCode(this.link);
        return hash;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final Node other = (Node) obj;
        if (!Objects.equals(this.id, other.id)) {
            return false;
        }
        if (!Objects.equals(this.link, other.link)) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "Node{" + "id=" + id + ", link=" + link + '}';
    }

}