Package org.springframework.core.annotation

Class SynthesizingMethodParameter

java.lang.Object

org.springframework.core.MethodParameter

org.springframework.core.annotation.SynthesizingMethodParameter

Direct Known Subclasses:

HandlerMethod.HandlerMethodParameter, HandlerMethod.HandlerMethodParameter

public class SynthesizingMethodParameter
extends MethodParameter

A MethodParameter variant which synthesizes annotations that declare attribute aliases via @AliasFor.

Since:

4.2

Author:

Juergen Hoeller, Sam Brannen

See Also:

• AnnotationUtils.synthesizeAnnotation(A, java.lang.reflect.AnnotatedElement)
• AnnotationUtils.synthesizeAnnotationArray(java.lang.annotation.Annotation[], java.lang.reflect.AnnotatedElement)

Constructor Summary

Constructors

Modifier	Constructor	Description
	SynthesizingMethodParameter(Constructor<?> constructor, int parameterIndex)	Create a new SynthesizingMethodParameter for the given constructor, with nesting level 1.
	SynthesizingMethodParameter(Constructor<?> constructor, int parameterIndex, int nestingLevel)	Create a new SynthesizingMethodParameter for the given constructor.
	SynthesizingMethodParameter(Method method, int parameterIndex)	Create a new SynthesizingMethodParameter for the given method, with nesting level 1.
	SynthesizingMethodParameter(Method method, int parameterIndex, int nestingLevel)	Create a new SynthesizingMethodParameter for the given method.
protected	SynthesizingMethodParameter(SynthesizingMethodParameter original)	Copy constructor, resulting in an independent SynthesizingMethodParameter based on the same metadata and cache state that the original object was in.

Method Summary

Modifier and Type	Method	Description
protected <A extends Annotation> A	adaptAnnotation(A annotation)	A template method to post-process a given annotation instance before returning it to the caller.
protected Annotation[]	adaptAnnotationArray(Annotation[] annotations)	A template method to post-process a given annotation array before returning it to the caller.
SynthesizingMethodParameter	clone()
static SynthesizingMethodParameter	forExecutable(Executable executable, int parameterIndex)	Create a new SynthesizingMethodParameter for the given method or constructor.
static SynthesizingMethodParameter	forParameter(Parameter parameter)	Create a new SynthesizingMethodParameter for the given parameter descriptor.

Methods inherited from class org.springframework.core.MethodParameter

decreaseNestingLevel, equals, findParameterIndex, forMethodOrConstructor, getAnnotatedElement, getConstructor, getContainingClass, getDeclaringClass, getExecutable, getGenericParameterType, getMember, getMethod, getMethodAnnotation, getMethodAnnotations, getNestedGenericParameterType, getNestedParameterType, getNestingLevel, getParameter, getParameterAnnotation, getParameterAnnotations, getParameterIndex, getParameterName, getParameterType, getTypeIndexForCurrentLevel, getTypeIndexForLevel, hashCode, hasMethodAnnotation, hasParameterAnnotation, hasParameterAnnotations, increaseNestingLevel, initParameterNameDiscovery, isOptional, nested, nested, nestedIfOptional, setTypeIndexForCurrentLevel, toString, withContainingClass, withTypeIndex

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

SynthesizingMethodParameter

public SynthesizingMethodParameter(Method method,
 int parameterIndex)

Create a new SynthesizingMethodParameter for the given method, with nesting level 1.

Parameters:

method - the Method to specify a parameter for

parameterIndex - the index of the parameter: -1 for the method return type; 0 for the first method parameter; 1 for the second method parameter, etc.

SynthesizingMethodParameter

public SynthesizingMethodParameter(Method method,
 int parameterIndex,
 int nestingLevel)

Create a new SynthesizingMethodParameter for the given method.

Parameters:

method - the Method to specify a parameter for

parameterIndex - the index of the parameter: -1 for the method return type; 0 for the first method parameter; 1 for the second method parameter, etc.

nestingLevel - the nesting level of the target type (typically 1; e.g. in case of a List of Lists, 1 would indicate the nested List, whereas 2 would indicate the element of the nested List)

SynthesizingMethodParameter

public SynthesizingMethodParameter(Constructor<?> constructor,
 int parameterIndex)

Create a new SynthesizingMethodParameter for the given constructor, with nesting level 1.

Parameters:

constructor - the Constructor to specify a parameter for

parameterIndex - the index of the parameter

SynthesizingMethodParameter

public SynthesizingMethodParameter(Constructor<?> constructor,
 int parameterIndex,
 int nestingLevel)

Create a new SynthesizingMethodParameter for the given constructor.

Parameters:

constructor - the Constructor to specify a parameter for

parameterIndex - the index of the parameter

nestingLevel - the nesting level of the target type (typically 1; e.g. in case of a List of Lists, 1 would indicate the nested List, whereas 2 would indicate the element of the nested List)

SynthesizingMethodParameter

protected SynthesizingMethodParameter(SynthesizingMethodParameter original)

Copy constructor, resulting in an independent SynthesizingMethodParameter based on the same metadata and cache state that the original object was in.

Parameters:

original - the original SynthesizingMethodParameter object to copy from

Method Details

adaptAnnotation

protected <A extends Annotation> A adaptAnnotation(A annotation)

Description copied from class: MethodParameter

A template method to post-process a given annotation instance before returning it to the caller.

The default implementation simply returns the given annotation as-is.

Overrides:

adaptAnnotation in class MethodParameter

Parameters:

annotation - the annotation about to be returned

Returns:

the post-processed annotation (or simply the original one)

adaptAnnotationArray

protected Annotation[] adaptAnnotationArray(Annotation[] annotations)

Description copied from class: MethodParameter

A template method to post-process a given annotation array before returning it to the caller.

The default implementation simply returns the given annotation array as-is.

Overrides:

adaptAnnotationArray in class MethodParameter

Parameters:

annotations - the annotation array about to be returned

Returns:

the post-processed annotation array (or simply the original one)

clone

public SynthesizingMethodParameter clone()

Overrides:

clone in class MethodParameter

forExecutable

public static SynthesizingMethodParameter forExecutable(Executable executable,
 int parameterIndex)

Create a new SynthesizingMethodParameter for the given method or constructor.

This is a convenience factory method for scenarios where a Method or Constructor reference is treated in a generic fashion.

Parameters:

executable - the Method or Constructor to specify a parameter for

parameterIndex - the index of the parameter

Returns:

the corresponding SynthesizingMethodParameter instance

Since:

5.0

forParameter

public static SynthesizingMethodParameter forParameter(Parameter parameter)

Create a new SynthesizingMethodParameter for the given parameter descriptor.

This is a convenience factory method for scenarios where a Java 8 Parameter descriptor is already available.

Parameters:

parameter - the parameter descriptor

Returns:

the corresponding SynthesizingMethodParameter instance

Since:

5.0