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package javax.xml.bind.annotation;

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

Enables mapping a class to a XML Schema complex type with a simpleContent or a XML Schema simple type.

Usage:

The @XmlValue annotation can be used with the following program elements:

  • a JavaBean property.
  • non static, non transient field.

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

The usage is subject to the following usage constraints:
  • At most one field or property can be annotated with the @XmlValue annotation.
  • @XmlValue can be used with the following annotations: XmlList. However this is redundant since XmlList maps a type to a simple schema type that derives by list just as XmlValue would.
  • If the type of the field or property is a collection type, then the collection item type must map to a simple schema type.
  • If the type of the field or property is not a collection type, then the type must map to a XML Schema simple type.

If the annotated JavaBean property is the sole class member being mapped to XML Schema construct, then the class is mapped to a simple type. If there are additional JavaBean properties (other than the JavaBean property annotated with @XmlValue annotation) that are mapped to XML attributes, then the class is mapped to a complex type with simpleContent.

Example 1: Map a class to XML Schema simpleType

 // Example 1: Code fragment public class USPrice { @XmlValue public java.math.BigDecimal price; } 
    <!-- Example 1: XML Schema fragment -->
    <xs:simpleType name="USPrice">
      <xs:restriction base="xs:decimal"/>
    </xs:simpleType>

Example 2: Map a class to XML Schema complexType with with simpleContent.

 // Example 2: Code fragment public class InternationalPrice { @XmlValue public java.math.BigDecimal price; @XmlAttribute public String currency; } 
  <!-- Example 2: XML Schema fragment -->
  <xs:complexType name="InternationalPrice">
    <xs:simpleContent>
      <xs:extension base="xs:decimal">
        <xs:attribute name="currency" type="xs:string"/>
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>
Author:Sekhar Vajjhala, Sun Microsystems, Inc.
See Also:
Since:1.6, JAXB 2.0
/** * <p> * Enables mapping a class to a XML Schema complex type with a * simpleContent or a XML Schema simple type. * </p> * * <p> * <b> Usage: </b> * <p> * The {@code @XmlValue} annotation can be used with the following program * elements: * <ul> * <li> a JavaBean property.</li> * <li> non static, non transient field.</li> * </ul> * * <p>See "Package Specification" in javax.xml.bind.package javadoc for * additional common information.</p> * * The usage is subject to the following usage constraints: * <ul> * <li>At most one field or property can be annotated with the * {@code @XmlValue} annotation. </li> * * <li>{@code @XmlValue} can be used with the following * annotations: {@link XmlList}. However this is redundant since * {@link XmlList} maps a type to a simple schema type that derives by * list just as {@link XmlValue} would. </li> * * <li>If the type of the field or property is a collection type, * then the collection item type must map to a simple schema * type. </li> * * <li>If the type of the field or property is not a collection * type, then the type must map to a XML Schema simple type. </li> * * </ul> * <p> * If the annotated JavaBean property is the sole class member being * mapped to XML Schema construct, then the class is mapped to a * simple type. * * If there are additional JavaBean properties (other than the * JavaBean property annotated with {@code @XmlValue} annotation) * that are mapped to XML attributes, then the class is mapped to a * complex type with simpleContent. * </p> * * <p> <b> Example 1: </b> Map a class to XML Schema simpleType</p> * * <pre> * * // Example 1: Code fragment * public class USPrice { * &#64;XmlValue * public java.math.BigDecimal price; * } * {@code * * <!-- Example 1: XML Schema fragment --> * <xs:simpleType name="USPrice"> * <xs:restriction base="xs:decimal"/> * </xs:simpleType> * * }</pre> * * <p><b> Example 2: </b> Map a class to XML Schema complexType with * with simpleContent.</p> * * <pre> * * // Example 2: Code fragment * public class InternationalPrice { * &#64;XmlValue * public java.math.BigDecimal price; * * &#64;XmlAttribute * public String currency; * } * {@code * * <!-- Example 2: XML Schema fragment --> * <xs:complexType name="InternationalPrice"> * <xs:simpleContent> * <xs:extension base="xs:decimal"> * <xs:attribute name="currency" type="xs:string"/> * </xs:extension> * </xs:simpleContent> * </xs:complexType> * * }</pre> * * @author Sekhar Vajjhala, Sun Microsystems, Inc. * @see XmlType * @since 1.6, JAXB 2.0 */
@Retention(RUNTIME) @Target({FIELD, METHOD}) public @interface XmlValue {}