org.axonframework.axonserver.connector

Interface Handlers<Case,Handler>

Type Parameters:

Case - the type of the case

Handler - the type of the handler

All Known Implementing Classes:

DefaultHandlers

public interface Handlers<Case,Handler>

Handler registry - gives possibility of registering handlers for specific cases and contexts. Also, it gives various ways of retrieving handlers.

Since:

4.2.1

Author:

Sara Pellegrini, Milan Savic

Method Summary

Modifier and Type	Method and Description
Collection<Handler>	get(String context, Case requestCase) Gets all handlers that match given context and requestCase.
default Collection<Handler>	getOrDefault(String context, Case requestCase, Collection<Handler> def) The same as get(String, Object) but if no handler is found it returns provided def collection of handlers.
void	register(BiPredicate<String,Case> handlerSelector, Handler handler) Registers a handler that can handle instructions matching given handlerSelector predicate.
default void	register(Case requestCase, Handler handler) Registers a handler that can handle instructions for given requestCase regardless of context.
default void	register(Handler handler) Registers a handler that can handle instructions regardless of context or request case.
default void	register(String context, Case requestCase, Handler handler) Registers a handler that can handle instructions for given context and requestCase.
default void	register(String context, Handler handler) Registers a handler that can handle instructions for given context regardless of request case.

Method Detail

get

Collection<Handler> get(String context,
                        Case requestCase)

Gets all handlers that match given context and requestCase.

Parameters:

context - the context

requestCase - the type of instruction to respond to

Returns:

collection of corresponding handlers

getOrDefault

default Collection<Handler> getOrDefault(String context,
                                         Case requestCase,
                                         Collection<Handler> def)

The same as get(String, Object) but if no handler is found it returns provided def collection of handlers.

Parameters:

context - the context

requestCase - the type of instruction to respond to

def - the default handlers if this registry does not contain any matching given criteria

Returns:

collection of corresponding handlers

register

default void register(Handler handler)

Registers a handler that can handle instructions regardless of context or request case.

Parameters:

handler - the handler of the instruction

register

default void register(String context,
                      Handler handler)

Registers a handler that can handle instructions for given context regardless of request case.

Parameters:

context - the context

handler - the handler of the instruction

register

default void register(Case requestCase,
                      Handler handler)

Registers a handler that can handle instructions for given requestCase regardless of context.

Parameters:

requestCase - the type of instruction to respond to

handler - the handler of the instruction

register

default void register(String context,
                      Case requestCase,
                      Handler handler)

Registers a handler that can handle instructions for given context and requestCase.

Parameters:

context - the context

requestCase - the type of instruction to respond to

handler - the handler of the instruction

register

void register(BiPredicate<String,Case> handlerSelector,
              Handler handler)

Registers a handler that can handle instructions matching given handlerSelector predicate.

Parameters:

handlerSelector - selects a handler based on context and request case

handler - the handler of the instruction