MemberRank.java

package javastory.channel.client;

/**
 * 
 * @author shoftee
 */
public enum MemberRank {

	MASTER(1), JR_MASTER(2), MEMBER_HIGH(3), MEMBER_MIDDLE(4), MEMBER_LOW(5);
	private byte ordinal;

	private MemberRank(final int ordinal) {
		this.ordinal = (byte) ordinal;
	}

	public byte asNumber() {
		return this.ordinal;
	}

	public boolean isSuperior(final MemberRank other) {
		// Regular members have the same priviledges;
		// Jr. Masters are equal (not superior) to other Jr. Masters.
		return this.isMaster() && this.ordinal < other.ordinal;
	}

	public boolean isMaster() {
		return this.equals(MemberRank.JR_MASTER) || this.equals(MemberRank.MASTER);
	}

	public static MemberRank fromNumber(final int ordinal) {
		switch (ordinal) {
		case 1:
			return MASTER;
		case 2:
			return JR_MASTER;
		case 3:
			return MEMBER_HIGH;
		case 4:
			return MEMBER_MIDDLE;
		case 5:
			return MEMBER_LOW;
		default:
			return null;
		}
	}
}