javax.xml.bind.annotation

Annotation Type XmlElement


  • @Retention(value=RUNTIME)
    @Target(value={FIELD,METHOD,PARAMETER})
    public @interface XmlElement
    Maps a JavaBean property to a XML element derived from property name.

    Usage

    @XmlElement annotation can be used with the following program elements:

    • a JavaBean property
    • non static, non transient field
    • within XmlElements

    The usage is subject to the following constraints:

    A JavaBean property, when annotated with @XmlElement annotation is mapped to a local element in the XML Schema complex type to which the containing class is mapped.

    Example 1: Map a public non static non final field to local element

         //Example: Code fragment
         public class USPrice {
             @XmlElement(name="itemprice")
             public java.math.BigDecimal price;
         }
    
         <!-- Example: Local XML Schema element -->
         <xs:complexType name="USPrice"/>
           <xs:sequence>
             <xs:element name="itemprice" type="xs:decimal" minOccurs="0"/>
           </sequence>
         </xs:complexType>
       

    Example 2: Map a field to a nillable element.

    
         //Example: Code fragment
         public class USPrice {
             @XmlElement(nillable=true)
             public java.math.BigDecimal price;
         }
    
         <!-- Example: Local XML Schema element -->
         <xs:complexType name="USPrice">
           <xs:sequence>
             <xs:element name="price" type="xs:decimal" nillable="true" minOccurs="0"/>
           </sequence>
         </xs:complexType>
       

    Example 3: Map a field to a nillable, required element.

    
         //Example: Code fragment
         public class USPrice {
             @XmlElement(nillable=true, required=true)
             public java.math.BigDecimal price;
         }
    
         <!-- Example: Local XML Schema element -->
         <xs:complexType name="USPrice">
           <xs:sequence>
             <xs:element name="price" type="xs:decimal" nillable="true" minOccurs="1"/>
           </sequence>
         </xs:complexType>
       

    Example 4: Map a JavaBean property to an XML element with anonymous type.

    See Example 6 in @XmlType.

    Since:
    JAXB2.0
    • Element Detail

      • name

        public abstract String name
        Name of the XML Schema element.

        If the value is "##default", then element name is derived from the JavaBean property name.

        Default:
        "##default"
      • nillable

        public abstract boolean nillable
        Customize the element declaration to be nillable.

        If nillable() is true, then the JavaBean property is mapped to a XML Schema nillable element declaration.

        Default:
        false
      • required

        public abstract boolean required
        Customize the element declaration to be required.

        If required() is true, then Javabean property is mapped to an XML schema element declaration with minOccurs="1". maxOccurs is "1" for a single valued property and "unbounded" for a multivalued property.

        If required() is false, then the Javabean property is mapped to XML Schema element declaration with minOccurs="0". maxOccurs is "1" for a single valued property and "unbounded" for a multivalued property.

        Default:
        false
      • namespace

        public abstract String namespace
        XML target namespace of the XML Schema element.

        If the value is "##default", then the namespace is determined as follows:

        1. If the enclosing package has XmlSchema annotation, and its elementFormDefault is QUALIFIED, then the namespace of the enclosing class.
        2. Otherwise '' (which produces unqualified element in the default namespace.
        Default:
        "##default"
      • defaultValue

        public abstract String defaultValue
        Default value of this element.

        The

        ''
        value specified as a default of this annotation element is used as a poor-man's substitute for null to allow implementations to recognize the 'no default value' state.
        Default:
        "\u0000"
      • type

        public abstract Class type
        The Java class being referenced.
        Default:
        javax.xml.bind.annotation.XmlElement.DEFAULT.class

Document created the 11/06/2005, last modified the 04/03/2020
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