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javax.xml.bind.annotation

Annotation Type XmlAttribute

Contents

  • @Retention(value=RUNTIME)
@Target(value={FIELD,METHOD})
public @interface XmlAttribute

    Maps a JavaBean property to a XML attribute.

    Usage

    The @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: XmlID, XmlIDREF, XmlList, XmlSchemaType, XmlValue, XmlAttachmentRef, XmlMimeType, XmlInlineBinaryData, 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 ) {...};
     }

     <!-- Example: XML Schema fragment -->
     <xs:complexType name="USPrice">
       <xs:sequence>
       </xs:sequence>
       <xs:attribute name="price" type="xs:decimal"/>
     </xs:complexType>

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

    See Example 7 in @XmlType.

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

         // Example: Code fragment
     class Foo {
         ...
         @XmlAttribute List<Integer> items;
     }

     <!-- Example: XML Schema fragment -->
     <xs:complexType name="foo">
       ...
       <xs:attribute name="items">
         <xs:simpleType>
           <xs:list itemType="xs:int"/>
         </xs:simpleType>
     </xs:complexType>
    Since:
    JAXB2.0
    See Also:
    XmlType

    • Element Detail

      • name

        public abstract String name
        Name of the XML Schema attribute. By default, the XML Schema attribute name is derived from the JavaBean property name.
        Default:
        "##default"

      • required

        public abstract boolean required
        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.
        Default:
        false

      • namespace

        public abstract String namespace
        Specifies the XML target namespace of the XML Schema attribute.
        Default:
        "##default"
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