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@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
- This annotation can be used with following annotations:
XmlID
,XmlIDREF
,XmlList
,XmlSchemaType
,XmlValue
,XmlAttachmentRef
,XmlMimeType
,XmlInlineBinaryData
,XmlElementWrapper
,XmlJavaTypeAdapter
- if the type of JavaBean property is a collection type of
array, an indexed property, or a parameterized list, and
this annotation is used with
XmlElements
then, @XmlElement.type() must be DEFAULT.class since the collection item type is already known.
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
-
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Optional Element Summary
Optional Elements Modifier and Type Optional Element and Description String
defaultValue
Default value of this element.String
name
Name of the XML Schema element.String
namespace
XML target namespace of the XML Schema element.boolean
nillable
Customize the element declaration to be nillable.boolean
required
Customize the element declaration to be required.Class
type
The Java class being referenced.
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-
-
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:
-
If the enclosing package has
XmlSchema
annotation, and itselementFormDefault
isQUALIFIED
, then the namespace of the enclosing class. - Otherwise '' (which produces unqualified element in the default namespace.
- Default:
- "##default"
-
If the enclosing package has
-
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
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