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javax.lang.model.element
public interface: AnnotationValueVisitor [javadoc | source]

All Known Implementing Classes:
    SimpleAnnotationValueVisitor7, SimpleAnnotationValueVisitor6, AbstractAnnotationValueVisitor7, AbstractAnnotationValueVisitor6

A visitor of the values of annotation type elements, using a variant of the visitor design pattern. Unlike a standard visitor which dispatches based on the concrete type of a member of a type hierarchy, this visitor dispatches based on the type of data stored; there are no distinct subclasses for storing, for example, {@code boolean} values versus {@code int} values. Classes implementing this interface are used to operate on a value when the type of that value is unknown at compile time. When a visitor is passed to a value's accept method, the visitXYZ method applicable to that value is invoked.

Classes implementing this interface may or may not throw a {@code NullPointerException} if the additional parameter {@code p} is {@code null}; see documentation of the implementing class for details.

WARNING: It is possible that methods will be added to this interface to accommodate new, currently unknown, language structures added to future versions of the Java™ programming language. Therefore, visitor classes directly implementing this interface may be source incompatible with future versions of the platform. To avoid this source incompatibility, visitor implementations are encouraged to instead extend the appropriate abstract visitor class that implements this interface. However, an API should generally use this visitor interface as the type for parameters, return type, etc. rather than one of the abstract classes.

Method from javax.lang.model.element.AnnotationValueVisitor Summary:
visit,   visit,   visitAnnotation,   visitArray,   visitBoolean,   visitByte,   visitChar,   visitDouble,   visitEnumConstant,   visitFloat,   visitInt,   visitLong,   visitShort,   visitString,   visitType,   visitUnknown
Method from javax.lang.model.element.AnnotationValueVisitor Detail:
 public R visit(AnnotationValue av)
    A convenience method equivalent to {@code v.visit(av, null)}.
 public R visit(AnnotationValue av,
    P p)
    Visits an annotation value.
 public R visitAnnotation(AnnotationMirror a,
    P p)
    Visits an annotation value in an annotation.
 public R visitArray(List<AnnotationValue> vals,
    P p)
    Visits an array value in an annotation.
 public R visitBoolean(boolean b,
    P p)
    Visits a {@code boolean} value in an annotation.
 public R visitByte(byte b,
    P p)
    Visits a {@code byte} value in an annotation.
 public R visitChar(char c,
    P p)
    Visits a {@code char} value in an annotation.
 public R visitDouble(double d,
    P p)
    Visits a {@code double} value in an annotation.
 public R visitEnumConstant(VariableElement c,
    P p)
    Visits an {@code enum} value in an annotation.
 public R visitFloat(float f,
    P p)
    Visits a {@code float} value in an annotation.
 public R visitInt(int i,
    P p)
    Visits an {@code int} value in an annotation.
 public R visitLong(long i,
    P p)
    Visits a {@code long} value in an annotation.
 public R visitShort(short s,
    P p)
    Visits a {@code short} value in an annotation.
 public R visitString(String s,
    P p)
    Visits a string value in an annotation.
 public R visitType(TypeMirror t,
    P p)
    Visits a type value in an annotation.
 public R visitUnknown(AnnotationValue av,
    P p)
    Visits an unknown kind of annotation value. This can occur if the language evolves and new kinds of value can be stored in an annotation.