StatusEnum.java

/*
 * Copyright (C) 2004, 2005 Joe Walnes.
 * Copyright (C) 2006, 2007 XStream Committers.
 * All rights reserved.
 *
 * The software in this package is published under the terms of the BSD
 * style license a copy of which has been included with this distribution in
 * the LICENSE.txt file.
 * 
 * Created on 30. May 2004 by Joe Walnes
 */
package com.thoughtworks.acceptance.objects;

import java.io.Serializable;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class StatusEnum implements Serializable, Comparable {

    private static int nextOrdinal = 0;
    private int ordinal = nextOrdinal++;

    public static final StatusEnum STARTED = new StatusEnum("STARTED");

    public static final StatusEnum FINISHED = new StatusEnum("FINISHED");

    private static final StatusEnum[] PRIVATE_VALUES = {STARTED, FINISHED};

    public static final List VALUES = Collections.unmodifiableList(Arrays.asList(PRIVATE_VALUES));

    private String name; // for debug only

    private StatusEnum() {
    }

    private StatusEnum(String name) {
        this.name = name;
    }

    public String toString() {
        return name;
    }

    public int compareTo(Object o) {
        return ordinal - ((StatusEnum) o).ordinal;
    }

    private Object readResolve() {
        return PRIVATE_VALUES[ordinal]; //Canonicalize
    }
}