Package org.axonframework.messaging.commandhandling

Interface CommandHandler

All Superinterfaces:

MessageHandler

All Known Subinterfaces:

CommandHandlingComponent

All Known Implementing Classes:

AnnotatedCommandHandlingComponent, EntityCommandHandlingComponent, SimpleCommandHandlingComponent

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface CommandHandler
extends MessageHandler

Interface describing a handler of commands.

Since:

5.0.0

Author:

Steven van Beelen

Method Summary

Modifier and Type	Method	Description
MessageStream.Single<CommandResultMessage>	handle(CommandMessage command, ProcessingContext context)	Handles the given command within the given context.

Method Details

handle

@Nonnull
MessageStream.Single<CommandResultMessage> handle(@Nonnull
 CommandMessage command,
 @Nonnull
 ProcessingContext context)

Handles the given command within the given context.

The result message in the returned stream may be null. Only a single or empty result message should ever be expected.

Parameters:

command - The command to handle.

context - The context to the given command is handled in.

Returns:

A MessagesStream.Single of a CommandResultMessage.