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1 /* |
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2 * Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package javax.xml.bind.annotation; |
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27 |
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28 import java.lang.annotation.Retention; |
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29 import java.lang.annotation.Target; |
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30 import static java.lang.annotation.RetentionPolicy.RUNTIME; |
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31 import static java.lang.annotation.ElementType.FIELD; |
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32 |
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33 /** |
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34 * Maps an enum constant in {@link Enum} type to XML representation. |
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35 * |
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36 * <p> <b>Usage</b> </p> |
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37 * |
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38 * <p> The <tt>@XmlEnumValue</tt> annotation can be used with the |
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39 * following program elements: |
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40 * <ul> |
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41 * <li>enum constant</li> |
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42 * </ul> |
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43 * |
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44 * <p>See "Package Specification" in javax.xml.bind.package javadoc for |
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45 * additional common information.</p> |
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46 * |
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47 * <p>This annotation, together with {@link XmlEnum} provides a |
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48 * mapping of enum type to XML representation. |
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49 * |
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50 * <p>An enum type is mapped to a schema simple type with enumeration |
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51 * facets. The schema type is derived from the Java type specified in |
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52 * <tt>@XmlEnum.value()</tt>. Each enum constant <tt>@XmlEnumValue</tt> |
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53 * must have a valid lexical representation for the type |
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54 * <tt>@XmlEnum.value()</tt> |
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55 * |
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56 * <p> In the absence of this annotation, {@link Enum#name()} is used |
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57 * as the XML representation. |
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58 * |
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59 * <p> <b>Example 1: </b>Map enum constant name -> enumeration facet</p> |
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60 * <pre> |
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61 * //Example: Code fragment |
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62 * @XmlEnum(String.class) |
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63 * public enum Card { CLUBS, DIAMONDS, HEARTS, SPADES } |
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64 * |
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65 * <!-- Example: XML Schema fragment --> |
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66 * <xs:simpleType name="Card"> |
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67 * <xs:restriction base="xs:string"/> |
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68 * <xs:enumeration value="CLUBS"/> |
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69 * <xs:enumeration value="DIAMONDS"/> |
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70 * <xs:enumeration value="HEARTS"/> |
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71 * <xs:enumeration value="SPADES"/> |
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72 * </xs:simpleType> |
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73 * </pre> |
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74 * |
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75 * <p><b>Example 2: </b>Map enum constant name(value) -> enumeration facet </p> |
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76 * <pre> |
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77 * //Example: code fragment |
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78 * @XmlType |
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79 * @XmlEnum(Integer.class) |
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80 * public enum Coin { |
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81 * @XmlEnumValue("1") PENNY(1), |
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82 * @XmlEnumValue("5") NICKEL(5), |
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83 * @XmlEnumValue("10") DIME(10), |
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84 * @XmlEnumValue("25") QUARTER(25) } |
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85 * |
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86 * <!-- Example: XML Schema fragment --> |
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87 * <xs:simpleType name="Coin"> |
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88 * <xs:restriction base="xs:int"> |
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89 * <xs:enumeration value="1"/> |
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90 * <xs:enumeration value="5"/> |
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91 * <xs:enumeration value="10"/> |
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92 * <xs:enumeration value="25"/> |
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93 * </xs:restriction> |
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94 * </xs:simpleType> |
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95 * </pre> |
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96 * |
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97 * <p><b>Example 3: </b>Map enum constant name -> enumeration facet </p> |
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98 * |
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99 * <pre> |
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100 * //Code fragment |
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101 * @XmlType |
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102 * @XmlEnum(Integer.class) |
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103 * public enum Code { |
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104 * @XmlEnumValue("1") ONE, |
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105 * @XmlEnumValue("2") TWO; |
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106 * } |
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107 * |
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108 * <!-- Example: XML Schema fragment --> |
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109 * <xs:simpleType name="Code"> |
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110 * <xs:restriction base="xs:int"> |
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111 * <xs:enumeration value="1"/> |
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112 * <xs:enumeration value="2"/> |
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113 * </xs:restriction> |
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114 * </xs:simpleType> |
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115 * </pre> |
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116 * |
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117 * @since JAXB 2.0 |
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118 */ |
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119 @Retention(RUNTIME) |
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120 @Target({FIELD}) |
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121 public @interface XmlEnumValue { |
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122 String value(); |
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123 } |