org.eclipse.persistence.oxm.annotations.XmlElementNillable Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of eclipselink Show documentation

EclipseLink build based upon Git transaction 346465e

There is a newer version: 5.0.0-B07

/*******************************************************************************
 * Copyright (c) 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:
 *     Martin Vojtek - July 7/2014
 ******************************************************************************/
package org.eclipse.persistence.oxm.annotations;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Purpose: Provide a means of setting nillable on type and package
 * level, which is not possible with standard XmlElement annotation.
 * 
 * Type level annotation overrides package level annotation.
 * 
 * 
 * Standard XmlElement with nillable attribute overrides the value of
 * XmlElementNillable annotation.
 * 
 *
 * @see javax.xml.bind.annotation.XmlElement
 */
@Target({ ElementType.TYPE, ElementType.PACKAGE })
@Retention(RetentionPolicy.RUNTIME)
public @interface XmlElementNillable {

    /**
     * (Optional) Customize the element declaration to be nillable.
     * If nillable() is true, then the JavaBean property is mapped to a XML Schema nillable element declaration.
     */
    boolean nillable() default true;
}