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/*
 * Copyright (c) 2004, 2018 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 javax.xml.bind.annotation;

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

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

/**
 * 

* Maps a JavaBean property to a XML attribute. * *

Usage

*

* The {@code @XmlAttribute} annotation can be used with the * following program elements: *

    *
  • JavaBean property
  • *
  • field
  • *
* *

A static final field is mapped to a XML fixed attribute. * *

See "Package Specification" in javax.xml.bind.package javadoc for * additional common information.

* * The usage is subject to the following constraints: *
    *
  • If type of the field or the property is a collection * type, then the collection item type must be mapped to schema * simple type. *
     *     // Examples
     *     @XmlAttribute List<Integer> items; //legal
     *     @XmlAttribute List<Bar> foo; // illegal if Bar does not map to a schema simple type
     * 
    *
  • *
  • If the type of the field or the property is a non * collection type, then the type of the property or field * must map to a simple schema type. *
     *     // Examples
     *     @XmlAttribute int foo; // legal
     *     @XmlAttribute Foo foo; // illegal if Foo does not map to a schema simple type
     * 
    *
  • *
  • This annotation can be used with the following annotations: * {@link XmlID}, * {@link XmlIDREF}, * {@link XmlList}, * {@link XmlSchemaType}, * {@link XmlValue}, * {@link XmlAttachmentRef}, * {@link XmlMimeType}, * {@link XmlInlineBinaryData}, * {@link javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter}.
  • *
* *

Example 1: Map a JavaBean property to an XML attribute.

*
 *     //Example: Code fragment
 *     public class USPrice { 
 *         @XmlAttribute
 *         public java.math.BigDecimal getPrice() {...} ;
 *         public void setPrice(java.math.BigDecimal ) {...};
 *     }
 * {@code
 * 
 *     
 *     
 *       
 *       
 *       
 *     
 * }
* *

Example 2: Map a JavaBean property to an XML attribute with anonymous type.

* See Example 7 in @{@link XmlType}. * *

Example 3: Map a JavaBean collection property to an XML attribute.

*
 *     // Example: Code fragment
 *     class Foo {
 *         ...
 *         @XmlAttribute List<Integer> items;
 *     } 
 * {@code
 * 
 *     
 *     
 *     	 ...
 *       
 *         
 *           
 *         
 *     
 *
 * }
* @author Sekhar Vajjhala, Sun Microsystems, Inc. * @see XmlType * @since 1.6, JAXB 2.0 */ @Retention(RUNTIME) @Target({FIELD, METHOD}) public @interface XmlAttribute { /** * Name of the XML Schema attribute. By default, the XML Schema * attribute name is derived from the JavaBean property name. * */ String name() default "##default"; /** * Specifies if the XML Schema attribute is optional or * required. If true, then the JavaBean property is mapped to a * XML Schema attribute that is required. Otherwise it is mapped * to a XML Schema attribute that is optional. * */ boolean required() default false; /** * Specifies the XML target namespace of the XML Schema * attribute. * */ String namespace() default "##default" ; }




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