Package jakarta.xml.bind

Class JAXBIntrospector

java.lang.Object
jakarta.xml.bind.JAXBIntrospector
public abstract class JAXBIntrospector extends Object
Provide access to Jakarta XML Binding xml binding data for a Jakarta XML Binding object.

Initially, the intent of this class is to just conceptualize how a Jakarta XML Binding application developer can access xml binding information, independent if binding model is java to schema or schema to java. Since accessing the XML element name related to a Jakarta XML Binding element is a highly requested feature, demonstrate access to this binding information. The factory method to get a JAXBIntrospector instance is JAXBContext.createJAXBIntrospector().

Since:
1.6, JAXB 2.0
See Also:

  • Constructor Details

    • JAXBIntrospector

      protected JAXBIntrospector()
      Do-nothing constructor for the derived classes.

  • Method Details

    • isElement

      public abstract boolean isElement(Object object)

      Return true if object represents a Jakarta XML Binding element.

      Parameter object is a Jakarta XML Binding element for following cases:

      1. It is an instance of jakarta.xml.bind.JAXBElement.
      2. The class of object is annotated with @XmlRootElement.
      See Also:

    • getElementName

      public abstract QName getElementName(Object jaxbElement)

      Get xml element qname for jaxbElement.

      Parameters:
      jaxbElement - is an object that isElement(Object) returned true.
      Returns:
      xml element qname associated with jaxbElement; null if jaxbElement is not a JAXBElement.

    • getValue

      public static Object getValue(Object jaxbElement)

      Get the element value of a Jakarta XML Binding element.

      Convenience method to abstract whether working with either a jakarta.xml.bind.JAXBElement instance or an instance of @XmlRootElement annotated Java class.

      Parameters:
      jaxbElement - object that #isElement(Object) returns true.
      Returns:
      The element value of the jaxbElement.