src/share/jaxws_classes/javax/xml/bind/annotation/XmlValue.java

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1 /*
2 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package javax.xml.bind.annotation;
27
28 import java.lang.annotation.Target;
29 import java.lang.annotation.Retention;
30 import static java.lang.annotation.ElementType.*;
31 import static java.lang.annotation.RetentionPolicy.*;
32
33 /**
34 * <p>
35 * Enables mapping a class to a XML Schema complex type with a
36 * simpleContent or a XML Schema simple type.
37 * </p>
38 *
39 * <p>
40 * <b> Usage: </b>
41 * <p>
42 * The <tt>@XmlValue</tt> annotation can be used with the following program
43 * elements:
44 * <ul>
45 * <li> a JavaBean property.</li>
46 * <li> non static, non transient field.</li>
47 * </ul>
48 *
49 * <p>See "Package Specification" in javax.xml.bind.package javadoc for
50 * additional common information.</p>
51 *
52 * The usage is subject to the following usage constraints:
53 * <ul>
54 * <li>At most one field or property can be annotated with the
55 * <tt>@XmlValue</tt> annotation. </li>
56 *
57 * <li><tt>@XmlValue</tt> can be used with the following
58 * annotations: {@link XmlList}. However this is redundant since
59 * {@link XmlList} maps a type to a simple schema type that derives by
60 * list just as {@link XmlValue} would. </li>
61 *
62 * <li>If the type of the field or property is a collection type,
63 * then the collection item type must map to a simple schema
64 * type. </li>
65 *
66 * <li>If the type of the field or property is not a collection
67 * type, then the type must map to a XML Schema simple type. </li>
68 *
69 * </ul>
70 * </p>
71 * <p>
72 * If the annotated JavaBean property is the sole class member being
73 * mapped to XML Schema construct, then the class is mapped to a
74 * simple type.
75 *
76 * If there are additional JavaBean properties (other than the
77 * JavaBean property annotated with <tt>@XmlValue</tt> annotation)
78 * that are mapped to XML attributes, then the class is mapped to a
79 * complex type with simpleContent.
80 * </p>
81 *
82 * <p> <b> Example 1: </b> Map a class to XML Schema simpleType</p>
83 *
84 * <pre>
85 *
86 * // Example 1: Code fragment
87 * public class USPrice {
88 * &#64;XmlValue
89 * public java.math.BigDecimal price;
90 * }
91 *
92 * &lt;!-- Example 1: XML Schema fragment -->
93 * &lt;xs:simpleType name="USPrice">
94 * &lt;xs:restriction base="xs:decimal"/>
95 * &lt;/xs:simpleType>
96 *
97 * </pre>
98 *
99 * <p><b> Example 2: </b> Map a class to XML Schema complexType with
100 * with simpleContent.</p>
101 *
102 * <pre>
103 *
104 * // Example 2: Code fragment
105 * public class InternationalPrice {
106 * &#64;XmlValue
107 * public java.math.BigDecimal price;
108 *
109 * &#64;XmlAttribute
110 * public String currency;
111 * }
112 *
113 * &lt;!-- Example 2: XML Schema fragment -->
114 * &lt;xs:complexType name="InternationalPrice">
115 * &lt;xs:simpleContent>
116 * &lt;xs:extension base="xs:decimal">
117 * &lt;xs:attribute name="currency" type="xs:string"/>
118 * &lt;/xs:extension>
119 * &lt;/xs:simpleContent>
120 * &lt;/xs:complexType>
121 *
122 * </pre>
123 * </p>
124 *
125 * @author Sekhar Vajjhala, Sun Microsystems, Inc.
126 * @see XmlType
127 * @since JAXB2.0
128 */
129
130 @Retention(RUNTIME) @Target({FIELD, METHOD})
131 public @interface XmlValue {}

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