Class DefaultHandler<M>

java.lang.Object

io.fluxzero.common.handling.DefaultHandler<M>

All Implemented Interfaces:

Handler<M>

public class DefaultHandler<M>
extends Object
implements Handler<M>

Default implementation of the Handler interface.

Nested Class Summary

Nested classes/interfaces inherited from interface Handler

Handler.DelegatingHandler<M>

Constructor Summary

Constructors

Constructor	Description
DefaultHandler(Class<?> targetClass, Function<M,?> targetSupplier, HandlerMatcher<Object,M> handlerMatcher)

Method Summary

Modifier and Type	Method	Description
static <M> DefaultHandler<M>	forTarget(Class<?> targetClass, Object target, HandlerMatcher<Object,M> handlerMatcher)
HandlerMethod<M>	getHandlerMethodOrNull(M message)	Returns a reusable HandlerMethod capable of processing the given message, or null when unavailable.
Optional<HandlerInvoker>	getInvoker(M message)	Returns a HandlerInvoker capable of processing the given message, if available.
HandlerInvoker	getInvokerOrNull(M message)	Returns a HandlerInvoker capable of processing the given message, or null when unavailable.
Class<?>	getTargetClass()	Returns the class of the handler's target object.
String	toString()

Methods inherited from class Object

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

Methods inherited from interface Handler

or

Constructor Details

DefaultHandler

public DefaultHandler(Class<?> targetClass,
 Function<M,?> targetSupplier,
 HandlerMatcher<Object,M> handlerMatcher)

Method Details

forTarget

public static <M> DefaultHandler<M> forTarget(Class<?> targetClass,
 Object target,
 HandlerMatcher<Object,M> handlerMatcher)

getTargetClass

public Class<?> getTargetClass()

Description copied from interface: Handler

Returns the class of the handler's target object. This may be used for reflective operations, logging, or framework-level behavior.

Specified by:

getTargetClass in interface Handler<M>

Returns:

the class of the handler's target

getInvoker

public Optional<HandlerInvoker> getInvoker(M message)

Description copied from interface: Handler

Returns a HandlerInvoker capable of processing the given message, if available.

Specified by:

getInvoker in interface Handler<M>

Parameters:

message - the message to be handled

Returns:

an optional HandlerInvoker if this handler can handle the message; otherwise Optional.empty()

getInvokerOrNull

public HandlerInvoker getInvokerOrNull(M message)

Description copied from interface: Handler

Returns a HandlerInvoker capable of processing the given message, or null when unavailable.

This is a lower-allocation counterpart to Handler.getInvoker(Object) for internal hot paths. Implementations that can resolve an invoker without creating an Optional should override this method.

Specified by:

getInvokerOrNull in interface Handler<M>

Parameters:

message - the message to be handled

Returns:

an invoker if this handler can handle the message; null otherwise

getHandlerMethodOrNull

public HandlerMethod<M> getHandlerMethodOrNull(M message)

Description copied from interface: Handler

Returns a reusable HandlerMethod capable of processing the given message, or null when unavailable.

This is an optional lower-allocation path for handlers whose target and method plan can be reused across messages. Implementations that cannot expose a stable method should return null and rely on Handler.getInvokerOrNull(Object).

Specified by:

getHandlerMethodOrNull in interface Handler<M>

Parameters:

message - the message to be handled

Returns:

a handler method if this handler can handle the message through a reusable method; null otherwise

toString

public String toString()

Overrides:

toString in class Object