@FunctionalInterface public interface DuplicateCommandHandlerResolver
MessageHandler
instances and returns another one as the resolution.Modifier and Type | Method and Description |
---|---|
MessageHandler<? super CommandMessage<?>> |
resolve(String commandName,
MessageHandler<? super CommandMessage<?>> registeredHandler,
MessageHandler<? super CommandMessage<?>> candidateHandler)
Chooses what to do when a duplicate handler is registered, returning the handler that should be selected for
command handling, or otherwise throwing an exception to reject registration altogether.
|
MessageHandler<? super CommandMessage<?>> resolve(String commandName, MessageHandler<? super CommandMessage<?>> registeredHandler, MessageHandler<? super CommandMessage<?>> candidateHandler)
commandName
- The name of the Command for which the duplicate was detectedregisteredHandler
- the MessageHandler
previously registered with the Command BuscandidateHandler
- the MessageHandler
that is newly registered and conflicts with the existing registrationMessageHandler
. Could be the registeredHandler
, the candidateHandler
or
another handler entirelyRuntimeException
- when registration should failCopyright © 2010–2020. All rights reserved.