-
@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
-
-
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.
-
-
-
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
-
-
Traduction non disponible
Les API Java ne sont pas encore traduites en français sur l'infobrol. Seule la version anglaise est disponible pour l'instant.
Version en cache
22/12/2024 09:41:05 Cette version de la page est en cache (à la date du 22/12/2024 09:41:05) afin d'accélérer le traitement. Vous pouvez activer le mode utilisateur dans le menu en haut pour afficher la dernère version de la page.Document créé le 11/06/2005, dernière modification le 04/03/2020
Source du document imprimé : https://www.gaudry.be/java-api-rf-javax/xml/bind/annotation/XmlElement.html
L'infobrol est un site personnel dont le contenu n'engage que moi. Le texte est mis à disposition sous licence CreativeCommons(BY-NC-SA). Plus d'info sur les conditions d'utilisation et sur l'auteur.
Références
Ces références et liens indiquent des documents consultés lors de la rédaction de cette page, ou qui peuvent apporter un complément d'information, mais les auteurs de ces sources ne peuvent être tenus responsables du contenu de cette page.
L'auteur de ce site est seul responsable de la manière dont sont présentés ici les différents concepts, et des libertés qui sont prises avec les ouvrages de référence. N'oubliez pas que vous devez croiser les informations de sources multiples afin de diminuer les risques d'erreurs.