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   this work for additional information regarding copyright ownership.
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   (the "License"); you may not use this file except in compliance with
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package org.apache.poi.openxml4j.util;

import org.apache.poi.util.Removal;

An immutable object that could be defined as null.
Author:
Julien Chable
Version:
0.9
Deprecated:
No longer used in POI code base, use Optional instead/**
 * An immutable object that could be defined as null.
 *
 * @author Julien Chable
 * @version 0.9
 * @deprecated No longer used in POI code base, use {@link java.util.Optional} instead
 */
@Removal(version = "4.2")
@Deprecated
public final class Nullable<E> {

	private E value;

	
Constructor.
/**
	 * Constructor.
	 */
	public Nullable() {
		// Do nothing
	}

	
Constructor.
Params:
value – 
           The value to set to this nullable./**
	 * Constructor.
	 *
	 * @param value
	 *            The value to set to this nullable.
	 */
	public Nullable(E value) {
		this.value = value;
	}

	
Get the store value if any.
Returns:
the store value/**
	 * Get the store value if any.
	 *
	 * @return the store value
	 */
	public E getValue() {
		return value;
	}

	
Get the status of this nullable.
Returns:
true if the nullable store a value (empty string is
        considered to be a value) else false./**
	 * Get the status of this nullable.
	 *
	 * @return <b>true</b> if the nullable store a value (empty string is
	 *         considered to be a value) else <b>false</>.
	 */
	public boolean hasValue() {
		return value != null;
	}

	
Set the stored value to null.
/**
	 * Set the stored value to <i>null</i>.
	 */
	public void nullify() {
		value = null;
	}
}