api/src/main/java/jakarta/xml/bind/annotation/XmlAccessorType.java

/*
 * Copyright (c) 2005, 2021 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package jakarta.xml.bind.annotation;

import jakarta.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import java.lang.annotation.Inherited;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;

/**
 * <p> Controls whether fields or Javabean properties are serialized by default. </p>
 * 
 * <p> <b> Usage </b> </p>
 *
 * <p> {@code @XmlAccessorType} annotation can be used with the following program elements:</p>
 * 
 * <ul> 
 *   <li> package</li>
 *   <li> a top level class </li>
 * </ul>
 *
 * <p> See "Package Specification" in jakarta.xml.bind.package javadoc for
 * additional common information.</p>
 *
 * <p>This annotation provides control over the default serialization
 * of properties and fields in a class.
 * 
 * <p>The annotation {@code @XmlAccessorType} on a package applies to
 * all classes in the package. The following inheritance
 * semantics apply:
 *
 * <ul>
 *   <li> If there is a {@code @XmlAccessorType} on a class, then it
 *        is used. </li>  
 *   <li> Otherwise, if a {@code @XmlAccessorType} exists on one of
 *        its super classes, then it is inherited.
 *   <li> Otherwise, the {@code @XmlAccessorType} on a package is
 *        inherited.
 * </ul>
 * <p> <b> Defaulting Rules: </b> </p>
 *
 * <p>By default, if {@code @XmlAccessorType} on a package is absent,
 * then the following package level annotation is assumed.</p>
 * <pre>
 *   &#64;XmlAccessorType(XmlAccessType.PUBLIC_MEMBER)
 * </pre>
 * <p> By default, if {@code @XmlAccessorType} on a class is absent,
 * and none of its super classes is annotated with
 * {@code @XmlAccessorType}, then the following default on the class
 * is assumed: </p>
 * <pre>
 *   &#64;XmlAccessorType(XmlAccessType.PUBLIC_MEMBER)
 * </pre>
 * <p>This annotation can be used with the following annotations: 
 *    {@link XmlType}, {@link XmlRootElement}, {@link XmlAccessorOrder}, 
 *    {@link XmlSchema}, {@link XmlSchemaType}, {@link XmlSchemaTypes}, 
 *    , {@link XmlJavaTypeAdapter}. It can also be used with the
 *    following annotations at the package level: {@link XmlJavaTypeAdapter}.
 *
 * @author Sekhar Vajjhala, Sun Microsystems, Inc.
 * @since 1.6, JAXB 2.0
 * @see XmlAccessType
 */

@Inherited @Retention(RUNTIME) @Target({PACKAGE, TYPE})
public @interface XmlAccessorType {

    /**
     * Specifies whether fields or properties are serialized. 
     * 
     * @see XmlAccessType
     */
    XmlAccessType value() default XmlAccessType.PUBLIC_MEMBER;
}