FallbackMethod (resilience4j-spring 1.7.0 API)

java.lang.Object
- io.github.resilience4j.fallback.FallbackMethod

```
public class FallbackMethod
extends java.lang.Object
```
Reflection utility for invoking a fallback method. Fallback method should have same return type and parameter types of original method but the last additional parameter. The last additional parameter should be a subclass of Throwable. When fallback(Throwable) is invoked, Throwable will be passed to that last parameter. If there are multiple fallback method, one of the methods that has most closest superclass parameter of thrown object will be invoked.
```
 For example, there are two fallback methods
 
 String fallbackMethod(String parameter, RuntimeException exception)
 String fallbackMethod(String parameter, IllegalArgumentException exception)
 
 and if try to fallback from NumberFormatException, String fallbackMethod(String parameter, IllegalArgumentException exception) will be invoked.
 
```

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static FallbackMethod`	`create(java.lang.String fallbackMethodName, java.lang.reflect.Method originalMethod, java.lang.Object[] args, java.lang.Object target)`
`java.lang.Object`	`fallback(java.lang.Throwable thrown)`	try to fallback from `Throwable`
`java.lang.Class<?>`	`getReturnType()`	get return type of fallbackMethod method

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - create
```
public static FallbackMethod create(java.lang.String fallbackMethodName,
                                    java.lang.reflect.Method originalMethod,
                                    java.lang.Object[] args,
                                    java.lang.Object target)
                             throws java.lang.NoSuchMethodException
```
    Parameters:
    
    fallbackMethodName - the configured fallback method name
    
    originalMethod - the original method which has fallback method configured
    
    args - the original method arguments
    
    target - the target class that own the original method and fallback method
    
    Returns:
    
    FallbackMethod instance
    
    Throws:
    
    java.lang.NoSuchMethodException
  - fallback
```
@Nullable
public java.lang.Object fallback(java.lang.Throwable thrown)
                          throws java.lang.Throwable
```
    try to fallback from Throwable
    
    Parameters:
    
    thrown - Throwable that should be fallback
    
    Returns:
    
    fallback value
    
    Throws:
    
    java.lang.Throwable - if throwable is unrecoverable, throwable will be thrown
  - getReturnType
```
public java.lang.Class<?> getReturnType()
```
    get return type of fallbackMethod method
    
    Returns:
    
    return type of fallbackMethod method