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/*******************************************************************************
 * Copyright (c) 2011, 2014 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 * Oracle = 2.1 - Initial contribution
 ******************************************************************************/
package org.eclipse.persistence.oxm.annotations;

/**
 * Purpose: This enumeration provides a means of specifying how a null value in a
 * java object should be marshalled to XML. The possible options are:

 * 
 * XSI_NIL - This means that the element should be written out with an xsi:nil attribute. Example: 
 * <element xsi:nil="true"/>
 * EMPTY_NODE - This indicates that the element should be written out to xml with no contents
 * Example: <element />
 * ABSENT_NODE - Absent node means that no element should be written to XML if null is encountered
 * 
 */
public enum XmlMarshalNullRepresentation {

    XSI_NIL,
    ABSENT_NODE,
    EMPTY_NODE;

    public String value() {
        return name();
    }

    public static XmlMarshalNullRepresentation fromValue(String v) {
        return valueOf(v);
    }

}