LocalVariableTableParameterNameDiscoverer (Spring Framework 4.3.30.RELEASE API)

java.lang.Object
- org.springframework.core.LocalVariableTableParameterNameDiscoverer

All Implemented Interfaces:
ParameterNameDiscoverer
```
public class LocalVariableTableParameterNameDiscoverer
extends Object
implements ParameterNameDiscoverer
```
Implementation of ParameterNameDiscoverer that uses the LocalVariableTable information in the method attributes to discover parameter names. Returns null if the class file was compiled without debug information.
Uses ObjectWeb's ASM library for analyzing class files. Each discoverer instance caches the ASM discovered information for each introspected Class, in a thread-safe manner. It is recommended to reuse ParameterNameDiscoverer instances as far as possible.
Since:
2.0
Author:
Adrian Colyer, Costin Leau, Juergen Hoeller, Chris Beams

Constructor Summary
Constructors
Constructor Description
LocalVariableTableParameterNameDiscoverer()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String[]`	`getParameterNames(Constructor<?> ctor)`	Return parameter names for this constructor, or `null` if they cannot be determined.
`String[]`	`getParameterNames(Method method)`	Return parameter names for this 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
  - LocalVariableTableParameterNameDiscoverer
```
public LocalVariableTableParameterNameDiscoverer()
```
- Method Detail
  - getParameterNames
```
public String[] getParameterNames(Method method)
```
    Description copied from interface: ParameterNameDiscoverer
    Return parameter names for this method, or null if they cannot be determined.
    Specified by:
    getParameterNames in interface ParameterNameDiscoverer
    Parameters:
    method - method to find parameter names for
    Returns:
    an array of parameter names if the names can be resolved, or null if they cannot
  - getParameterNames
```
public String[] getParameterNames(Constructor<?> ctor)
```
    Description copied from interface: ParameterNameDiscoverer
    Return parameter names for this constructor, or null if they cannot be determined.
    Specified by:
    getParameterNames in interface ParameterNameDiscoverer
    Parameters:
    ctor - constructor to find parameter names for
    Returns:
    an array of parameter names if the names can be resolved, or null if they cannot