javax.xml.bind

Class JAXBElement<T>

Table des matières
  • All Implemented Interfaces:
    Serializable

    public class JAXBElement<T>
extends Object
implements Serializable

    JAXB representation of an Xml Element.

    This class represents information about an Xml Element from both the element declaration within a schema and the element instance value within an xml document with the following properties

    • element's xml tag name
    • value represents the element instance's atttribute(s) and content model
    • element declaration's declaredType (xs:element @type attribute)
    • scope of element declaration
    • boolean nil property. (element instance's xsi:nil attribute)

    The declaredType and scope property are the JAXB class binding for the xml type definition.

    Scope is either JAXBElement.GlobalScope or the Java class representing the complex type definition containing the schema element declaration.

    There is a property constraint that if value is null, then nil must be true. The converse is not true to enable representing a nil element with attribute(s). If nil is true, it is possible that value is non-null so it can hold the value of the attributes associated with a nil element.

    Since:
    JAXB 2.0
    See Also:
    Serialized Form

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class and Description
      static class  JAXBElement.GlobalScope
      Designates global scope for an xml element.

        

    • Field Summary

      Fields 
      Modifier and Type Field and Description
      protected Class<T> declaredType
      Java datatype binding for xml element declaration's type.
      protected QName name
      xml element tag name
      protected boolean nil
      true iff the xml element instance has xsi:nil="true".
      protected Class scope
      Scope of xml element declaration representing this xml element instance.
      protected T value
      xml element value.

        

    • Constructor Summary

      Constructors 
      Constructor and Description
      JAXBElement(QName name, Class<T> declaredType, Class scope, T value)
      Construct an xml element instance.
      JAXBElement(QName name, Class<T> declaredType, T value)
      Construct an xml element instance.

        

    • Method Summary

      Methods 
      Modifier and Type Method and Description
      Class<T> getDeclaredType()
      Returns the Java binding of the xml element declaration's type attribute.
      QName getName()
      Returns the xml element tag name.
      Class getScope()
      Returns scope of xml element declaration.
      T getValue()
      Return the content model and attribute values for this element.
      boolean isGlobalScope()
      Returns true iff this xml element declaration is global.
      boolean isNil()
      Returns true iff this element instance content model is nil.
      boolean isTypeSubstituted()
      Returns true iff this xml element instance's value has a different type than xml element declaration's declared type.
      void setNil(boolean value)
      Set whether this element has nil content.
      void setValue(T t)
      Set the content model and attributes of this xml element.

        

    • Field Detail

      • name

        protected final QName name
        xml element tag name

      • declaredType

        protected final Class<T> declaredType
        Java datatype binding for xml element declaration's type.

      • scope

        protected final Class scope
        Scope of xml element declaration representing this xml element instance. Can be one of the following values: - JAXBElement.GlobalScope for global xml element declaration. - local element declaration has a scope set to the Java class representation of complex type defintion containing xml element declaration.

      • value

        protected T value
        xml element value. Represents content model and attributes of an xml element instance.

      • nil

        protected boolean nil
        true iff the xml element instance has xsi:nil="true".

    • Constructor Detail

      • JAXBElement

        public JAXBElement(QName name,
           Class<T> declaredType,
           Class scope,
           T value)

        Construct an xml element instance.

        Parameters:
        name - Java binding of xml element tag name
        declaredType - Java binding of xml element declaration's type
        scope - Java binding of scope of xml element declaration. Passing null is the same as passing GlobalScope.class
        value - Java instance representing xml element's value.
        See Also:
        getScope(), isTypeSubstituted()

      • JAXBElement

        public JAXBElement(QName name,
           Class<T> declaredType,
           T value)
        Construct an xml element instance. This is just a convenience method for new JAXBElement(name,declaredType,GlobalScope.class,value)

    • Method Detail

      • getDeclaredType

        public Class<T> getDeclaredType()
        Returns the Java binding of the xml element declaration's type attribute.

      • getName

        public QName getName()
        Returns the xml element tag name.

      • setValue

        public void setValue(T t)

        Set the content model and attributes of this xml element.

        When this property is set to null, isNil() must by true. Details of constraint are described at isNil().

        See Also:
        isTypeSubstituted()

      • getValue

        public T getValue()

        Return the content model and attribute values for this element.

        See isNil() for a description of a property constraint when this value is null

      • getScope

        public Class getScope()
        Returns scope of xml element declaration.
        Returns:
        GlobalScope.class if this element is of global scope.
        See Also:
        isGlobalScope()

      • isNil

        public boolean isNil()

        Returns true iff this element instance content model is nil.

        This property always returns true when getValue() is null. Note that the converse is not true, when this property is true, getValue() can contain a non-null value for attribute(s). It is valid for a nil xml element to have attribute(s).

      • setNil

        public void setNil(boolean value)

        Set whether this element has nil content.

        See Also:
        isNil()

      • isGlobalScope

        public boolean isGlobalScope()
        Returns true iff this xml element declaration is global.

      • isTypeSubstituted

        public boolean isTypeSubstituted()
        Returns true iff this xml element instance's value has a different type than xml element declaration's declared type.

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

22/11/2024 03:16:12 Cette version de la page est en cache (à la date du 22/11/2024 03:16:12) 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/JAXBElement.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

  1. Consulter le document html Langue du document :fr Manuel PHP : https://docs.oracle.com

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.

Table des matières Haut