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package javax.lang.model.element;

import javax.lang.model.UnknownEntityException;


Indicates that an unknown kind of annotation value was encountered. This can occur if the language evolves and new kinds of annotation values can be stored in an annotation. May be thrown by an annotation value visitor to indicate that the visitor was created for a prior version of the language. 
Author:Joseph D. Darcy, Scott Seligman, Peter von der Ahé
See Also:
Since:1.6
/**
 * Indicates that an unknown kind of annotation value was encountered.
 * This can occur if the language evolves and new kinds of annotation
 * values can be stored in an annotation.  May be thrown by an
 * {@linkplain AnnotationValueVisitor annotation value visitor} to
 * indicate that the visitor was created for a prior version of the
 * language.
 *
 * @author Joseph D. Darcy
 * @author Scott Seligman
 * @author Peter von der Ahé
 * @see AnnotationValueVisitor#visitUnknown
 * @since 1.6
 */
public class UnknownAnnotationValueException extends UnknownEntityException {

    private static final long serialVersionUID = 269L;

    private transient AnnotationValue av;
    private transient Object parameter;

    
Creates a new UnknownAnnotationValueException. The p parameter may be used to pass in an additional argument with information about the context in which the unknown annotation value was encountered; for example, the visit methods of AnnotationValueVisitor may pass in their additional parameter. 
Params:
  • av – the unknown annotation value, may be null
  • p – an additional parameter, may be null
/**
     * Creates a new {@code UnknownAnnotationValueException}.  The
     * {@code p} parameter may be used to pass in an additional
     * argument with information about the context in which the
     * unknown annotation value was encountered; for example, the
     * visit methods of {@link AnnotationValueVisitor} may pass in
     * their additional parameter.
     *
     * @param av the unknown annotation value, may be {@code null}
     * @param p an additional parameter, may be {@code null}
     */
    public UnknownAnnotationValueException(AnnotationValue av, Object p) {
        super("Unknown annotation value: " + av);
        this.av = av;
        this.parameter = p;
    }

    
Returns the unknown annotation value.
The value may be unavailable if this exception has been
serialized and then read back in.

Returns:the unknown element, or null if unavailable
/**
     * Returns the unknown annotation value.
     * The value may be unavailable if this exception has been
     * serialized and then read back in.
     *
     * @return the unknown element, or {@code null} if unavailable
     */
    public AnnotationValue getUnknownAnnotationValue() {
        return av;
    }

    
Returns the additional argument.

Returns:the additional argument, or null if unavailable
/**
     * Returns the additional argument.
     *
     * @return the additional argument, or {@code null} if unavailable
     */
    public Object getArgument() {
        return parameter;
    }
}