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JavaTM 2 Platform Std. Ed. v1.6.0

javax.lang.model.util
Class SimpleElementVisitor6<R,P>

java.lang.Object
  extended by javax.lang.model.util.AbstractElementVisitor6<R,P>
      extended by javax.lang.model.util.SimpleElementVisitor6<R,P>
Type Parameters:
R - the return type of this visitor's methods. Use Void for visitors that do not need to return results.
P - the type of the additional parameter to this visitor's methods. Use Void for visitors that do not need an additional parameter.
All Implemented Interfaces:
ElementVisitor<R,P>
Direct Known Subclasses:
ElementKindVisitor6

@SupportedSourceVersion(value=RELEASE_6)
public class SimpleElementVisitor6<R,P>
extends AbstractElementVisitor6<R,P>

A simple visitor of program elements with default behavior appropriate for the RELEASE_6 source version. Visit methods corresponding to RELEASE_6 language constructs call defaultAction(javax.lang.model.element.Element, P), passing their arguments to defaultAction's corresponding parameters.

Methods in this class may be overridden subject to their general contract. Note that annotating methods in concrete subclasses with @Override will help ensure that methods are overridden as intended.

WARNING: The ElementVisitor interface implemented by this class may have methods added to it in the future to accommodate new, currently unknown, language structures added to future versions of the Java™ programming language. Therefore, methods whose names begin with "visit" may be added to this class in the future; to avoid incompatibilities, classes which extend this class should not declare any instance methods with names beginning with "visit".

When such a new visit method is added, the default implementation in this class will be to call the visitUnknown method. A new simple element visitor class will also be introduced to correspond to the new language level; this visitor will have different default behavior for the visit method in question. When the new visitor is introduced, all or portions of this visitor may be deprecated.

Since:
1.6

Field Summary
protected  R DEFAULT_VALUE
          Default value to be returned; defaultAction returns this value unless the method is overridden.
 
Constructor Summary
protected SimpleElementVisitor6()
          Constructor for concrete subclasses; uses null for the default value.
protected SimpleElementVisitor6(R defaultValue)
          Constructor for concrete subclasses; uses the argument for the default value.
 
Method Summary
protected  R defaultAction(Element e, P p)
          The default action for visit methods.
 R visitExecutable(ExecutableElement e, P p)
          Visits an executable element.
 R visitPackage(PackageElement e, P p)
          Visits a package element.
 R visitType(TypeElement e, P p)
          Visits a type element.
 R visitTypeParameter(TypeParameterElement e, P p)
          Visits a type parameter element.
 R visitVariable(VariableElement e, P p)
          Visits a variable element.
 
Methods inherited from class javax.lang.model.util.AbstractElementVisitor6
visit, visit, visitUnknown
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

DEFAULT_VALUE

protected final R DEFAULT_VALUE
Default value to be returned; defaultAction returns this value unless the method is overridden.

Constructor Detail

SimpleElementVisitor6

protected SimpleElementVisitor6()
Constructor for concrete subclasses; uses null for the default value.


SimpleElementVisitor6

protected SimpleElementVisitor6(R defaultValue)
Constructor for concrete subclasses; uses the argument for the default value.

Parameters:
defaultValue - the value to assign to DEFAULT_VALUE
Method Detail

defaultAction

protected R defaultAction(Element e,
                          P p)
The default action for visit methods. The implementation in this class just returns DEFAULT_VALUE; subclasses will commonly override this method.

Parameters:
e - the element to process
p - a visitor-specified parameter
Returns:
DEFAULT_VALUE unless overridden

visitPackage

public R visitPackage(PackageElement e,
                      P p)
Visits a package element. This implementation calls defaultAction.

Parameters:
e - the element to visit
p - a visitor-specified parameter
Returns:
the result of defaultAction

visitType

public R visitType(TypeElement e,
                   P p)
Visits a type element. This implementation calls defaultAction.

Parameters:
e - the element to visit
p - a visitor-specified parameter
Returns:
the result of defaultAction

visitVariable

public R visitVariable(VariableElement e,
                       P p)
Visits a variable element. This implementation calls defaultAction.

Parameters:
e - the element to visit
p - a visitor-specified parameter
Returns:
the result of defaultAction

visitExecutable

public R visitExecutable(ExecutableElement e,
                         P p)
Visits an executable element. This implementation calls defaultAction.

Parameters:
e - the element to visit
p - a visitor-specified parameter
Returns:
the result of defaultAction

visitTypeParameter

public R visitTypeParameter(TypeParameterElement e,
                            P p)
Visits a type parameter element. This implementation calls defaultAction.

Parameters:
e - the element to visit
p - a visitor-specified parameter
Returns:
the result of defaultAction

Copyright 2003 Sun Microsystems, Inc. All rights reserved