Package org.jdbi.v3.core.extension

Class InstanceExtensionHandlerFactory

java.lang.Object

org.jdbi.v3.core.extension.InstanceExtensionHandlerFactory

All Implemented Interfaces:

ExtensionHandlerFactory

final class InstanceExtensionHandlerFactory
extends java.lang.Object
implements ExtensionHandlerFactory

Provides ExtensionHandler instances for all methods that have not been covered in any other way. It forwards a call to the handler to a method invocation on the target object. For any extension factory that simply provides an implementation of the extension interface, this forwards the call to the method on the implementation. The extension framework wraps these calls into invocations that manage the extension context for the handle correctly so that logging will work for all extension.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static ExtensionHandlerFactory	INSTANCE

Constructor Summary

Constructors

Constructor	Description
InstanceExtensionHandlerFactory()

Method Summary

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.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSTANCE

static final ExtensionHandlerFactory INSTANCE

Constructor Detail

InstanceExtensionHandlerFactory

InstanceExtensionHandlerFactory()

Method Detail

accepts

public boolean accepts(java.lang.Class<?> extensionType,
                       java.lang.reflect.Method method)

Description copied from interface: ExtensionHandlerFactory

Determines whether the factory can create an ExtensionHandler for combination of extension type and method.

Specified by:

accepts in interface ExtensionHandlerFactory

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

public java.util.Optional<ExtensionHandler> createExtensionHandler(java.lang.Class<?> extensionType,
                                                                   java.lang.reflect.Method method)

Description copied from interface: ExtensionHandlerFactory

Returns an ExtensionHandler instance for a extension type and method combination.

Specified by:

createExtensionHandler in interface ExtensionHandlerFactory

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()