当前页面: 在线文档首页 > JDK 5 Documentation v6.0, Java 2 SDK 英文文档

SimpleTypeVisitor6 (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

---

Overview  Package   Class  Use  Tree  Deprecated  Index  Help		Java™ Platform Standard Ed. 6
PREV CLASS   NEXT CLASS	FRAMES    NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

---

javax.lang.model.util
Class SimpleTypeVisitor6<R,P>

java.lang.Object
  javax.lang.model.util.AbstractTypeVisitor6<R,P>
      javax.lang.model.util.SimpleTypeVisitor6<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:

TypeVisitor<R,P>

Direct Known Subclasses:

TypeKindVisitor6

---

@SupportedSourceVersion(value=RELEASE_6)
public class SimpleTypeVisitor6<R,P>
extends AbstractTypeVisitor6<R,P>

A simple visitor of types with default behavior appropriate for the RELEASE_6 source version. Visit methods corresponding to RELEASE_6 language constructs call defaultAction(javax.lang.model.type.TypeMirror, 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 TypeVisitor 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 type 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	SimpleTypeVisitor6()           Constructor for concrete subclasses; uses null for the default value.
protected	SimpleTypeVisitor6(R defaultValue)           Constructor for concrete subclasses; uses the argument for the default value.

 

Method Summary
protected  R	defaultAction(TypeMirror e, P p)           The default action for visit methods.
R	visitArray(ArrayType t, P p)           Visits an array type.
R	visitDeclared(DeclaredType t, P p)           Visits a declared type.
R	visitError(ErrorType t, P p)           Visits an error type.
R	visitExecutable(ExecutableType t, P p)           Visits an executable type.
R	visitNoType(NoType t, P p)           Visits a NoType instance.
R	visitNull(NullType t, P p)           Visits the null type.
R	visitPrimitive(PrimitiveType t, P p)           Visits a primitive type.
R	visitTypeVariable(TypeVariable t, P p)           Visits a type variable.
R	visitWildcard(WildcardType t, P p)           Visits a wildcard type.

 

Methods inherited from class javax.lang.model.util.AbstractTypeVisitor6
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

SimpleTypeVisitor6

protected SimpleTypeVisitor6()

Constructor for concrete subclasses; uses null for the default value.

---

SimpleTypeVisitor6

protected SimpleTypeVisitor6(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(TypeMirror e,
                          P p)

The default action for visit methods. The implementation in this class just returns DEFAULT_VALUE; subclasses will commonly override this method.

---

visitPrimitive

public R visitPrimitive(PrimitiveType t,
                        P p)

Visits a primitive type. This implementation calls defaultAction.

Parameters:

t - the type to visit

p - a visitor-specified parameter

Returns:

the result of defaultAction

---

visitNull

public R visitNull(NullType t,
                   P p)

Visits the null type. This implementation calls defaultAction.

Parameters:

t - the type to visit

p - a visitor-specified parameter

Returns:

the result of defaultAction

---

visitArray

public R visitArray(ArrayType t,
                    P p)

Visits an array type. This implementation calls defaultAction.

Parameters:

t - the type to visit

p - a visitor-specified parameter

Returns:

the result of defaultAction

---

visitDeclared

public R visitDeclared(DeclaredType t,
                       P p)

Visits a declared type. This implementation calls defaultAction.

Parameters:

t - the type to visit

p - a visitor-specified parameter

Returns:

the result of defaultAction

---

visitError

public R visitError(ErrorType t,
                    P p)

Visits an error type. This implementation calls defaultAction.

Parameters:

t - the type to visit

p - a visitor-specified parameter

Returns:

the result of defaultAction

---

visitTypeVariable

public R visitTypeVariable(TypeVariable t,
                           P p)

Visits a type variable. This implementation calls defaultAction.

Parameters:

t - the type to visit

p - a visitor-specified parameter

Returns:

the result of defaultAction

---

visitWildcard

public R visitWildcard(WildcardType t,
                       P p)

Visits a wildcard type. This implementation calls defaultAction.

Parameters:

t - the type to visit

p - a visitor-specified parameter

Returns:

the result of defaultAction

---

visitExecutable

public R visitExecutable(ExecutableType t,
                         P p)

Visits an executable type. This implementation calls defaultAction.

Parameters:

t - the type to visit

p - a visitor-specified parameter

Returns:

the result of defaultAction

---

visitNoType

public R visitNoType(NoType t,
                     P p)

Visits a NoType instance. This implementation calls defaultAction.

Parameters:

t - the type to visit

p - a visitor-specified parameter

Returns:

the result of defaultAction

---

Overview  Package   Class  Use  Tree  Deprecated  Index  Help		Java™ Platform Standard Ed. 6
PREV CLASS   NEXT CLASS	FRAMES    NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

---

Submit a bug or feature
For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2006 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.