org.springframework.core

Class StandardReflectionParameterNameDiscoverer

java.lang.Object

org.springframework.core.StandardReflectionParameterNameDiscoverer

All Implemented Interfaces:

ParameterNameDiscoverer

public class StandardReflectionParameterNameDiscoverer
extends java.lang.Object
implements ParameterNameDiscoverer

ParameterNameDiscoverer implementation which uses JDK 8's reflection facilities for introspecting parameter names (based on the "-parameters" compiler flag).

Since:

4.0

Author:

Juergen Hoeller

See Also:

Executable.getParameters(), Parameter.getName()

Constructor Summary

Constructors

Constructor and Description
StandardReflectionParameterNameDiscoverer()

Method Summary

Modifier and Type	Method and Description
java.lang.String[]	getParameterNames(java.lang.reflect.Constructor<?> ctor) Return parameter names for a constructor, or null if they cannot be determined.
java.lang.String[]	getParameterNames(java.lang.reflect.Method method) Return parameter names for a method, or null if they cannot be determined.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StandardReflectionParameterNameDiscoverer

public StandardReflectionParameterNameDiscoverer()

Method Detail

getParameterNames

@Nullable
public java.lang.String[] getParameterNames(java.lang.reflect.Method method)

Description copied from interface: ParameterNameDiscoverer

Return parameter names for a method, or null if they cannot be determined.

Individual entries in the array may be null if parameter names are only available for some parameters of the given method but not for others. However, it is recommended to use stub parameter names instead wherever feasible.

Specified by:

getParameterNames in interface ParameterNameDiscoverer

Parameters:

method - the method to find parameter names for

Returns:

an array of parameter names if the names can be resolved, or null if they cannot

getParameterNames

@Nullable
public java.lang.String[] getParameterNames(java.lang.reflect.Constructor<?> ctor)

Description copied from interface: ParameterNameDiscoverer

Return parameter names for a constructor, or null if they cannot be determined.

Individual entries in the array may be null if parameter names are only available for some parameters of the given constructor but not for others. However, it is recommended to use stub parameter names instead wherever feasible.

Specified by:

getParameterNames in interface ParameterNameDiscoverer

Parameters:

ctor - the constructor to find parameter names for

Returns:

an array of parameter names if the names can be resolved, or null if they cannot