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

All Implemented Interfaces:
ParameterNameDiscoverer
Direct Known Subclasses:
DefaultParameterNameDiscoverer
```
public class PrioritizedParameterNameDiscoverer
extends Object
implements ParameterNameDiscoverer
```
ParameterNameDiscoverer implementation that tries several discoverer delegates in succession. Those added first in the addDiscoverer method have highest priority. If one returns null, the next will be tried.
The default behavior is to return null if no discoverer matches.
Since:
2.0
Author:
Rod Johnson, Juergen Hoeller

Constructor Summary
Constructors
Constructor Description
PrioritizedParameterNameDiscoverer()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addDiscoverer(ParameterNameDiscoverer pnd)`	Add a further `ParameterNameDiscoverer` delegate to the list of discoverers that this `PrioritizedParameterNameDiscoverer` checks.
`String[]`	`getParameterNames(Constructor<?> ctor)`	Return parameter names for a constructor, or `null` if they cannot be determined.
`String[]`	`getParameterNames(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
  - PrioritizedParameterNameDiscoverer
```
public PrioritizedParameterNameDiscoverer()
```
- Method Detail
  - addDiscoverer
```
public void addDiscoverer(ParameterNameDiscoverer pnd)
```
    Add a further ParameterNameDiscoverer delegate to the list of discoverers that this PrioritizedParameterNameDiscoverer checks.
  - getParameterNames
```
@Nullable
public String[] getParameterNames(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 String[] getParameterNames(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

Class PrioritizedParameterNameDiscoverer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

PrioritizedParameterNameDiscoverer

Method Detail

addDiscoverer

getParameterNames

getParameterNames