PrioritizedParameterNameDiscoverer (Spring Framework 4.3.30.RELEASE API)

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 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
  - 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
```
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