ExtensionHandlerFactory

All Known Subinterfaces:

HandlerFactory

All Known Implementing Classes:

BridgeMethodExtensionHandlerFactory, DefaultMethodExtensionHandlerFactory, FilteringExtensionHandlerFactory, InstanceExtensionHandlerFactory, SqlMethodHandlerFactory, UseAnnotationExtensionHandlerFactory
```
public interface ExtensionHandlerFactory
```
A factory to create ExtensionHandler instances.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`accepts(java.lang.Class<?> extensionType, java.lang.reflect.Method method)`	Determines whether the factory can create an `ExtensionHandler` for combination of extension type and method.
`java.util.Optional<ExtensionHandler>`	`createExtensionHandler(java.lang.Class<?> extensionType, java.lang.reflect.Method method)`	Returns an `ExtensionHandler` instance for a extension type and method combination.

- Method Detail
  - accepts
```
boolean accepts(java.lang.Class<?> extensionType,
                java.lang.reflect.Method method)
```
    Determines whether the factory can create an ExtensionHandler for combination of extension type and method.
    
    Parameters:
    
    extensionType - The extension type class
    
    method - A method
    
    Returns:
    
    True if the factory can create an extension handler for extension type and method, false otherwise
  - createExtensionHandler
```
java.util.Optional<ExtensionHandler> createExtensionHandler(java.lang.Class<?> extensionType,
                                                            java.lang.reflect.Method method)
```
    Returns an ExtensionHandler instance for a extension type and method combination.
    
    Parameters:
    
    extensionType - The extension type class
    
    method - A method
    
    Returns:
    
    An ExtensionHandler instance wrapped into an Optional. The optional can be empty. This is necessary to retrofit old code that does not have an accept/build code pair but unconditionally tries to build a handler and returns empty if it can not. New code should always return Optional.of(extensionHandler} and never return Optional.empty()