Package dk.cloudcreate.essentials.reactive.command
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Interface Summary Interface Description CommandHandler Common interface for all Command message handlers
A command handler can choose support to 1 or more command types -
Class Summary Class Description AnnotatedCommandHandler Extending this class will allow you to colocate multiple related Command handling methods inside the same class and use it together with theLocalCommandBus
Each method must accept a single Command argument, may return a value or return void and be annotated with theEventHandlerannotation.
The method argument type is matched against the concrete command type usingClass.isAssignableFrom(Class).
The method accessibility can be any combination of private, protected, public, etc.
Example:LocalCommandBus TheLocalCommandBusprovides an indirection between a command and theCommandHandlerthat's capable of handling the command.
Commands can be sent synchronously usingLocalCommandBus.send(Object)or asynchronously usingLocalCommandBus.sendAsync(Object)that returns aMono.
The handling of a command usually doesn't return any value (according to the principles of CQRS), however theLocalCommandBusAPI allows aCommandHandlerto return a value if needed (e.g. -
Exception Summary Exception Description MultipleCommandHandlersFoundException NoCommandHandlerFoundException SendCommandException -
Annotation Types Summary Annotation Type Description Handler Method annotation that can be applied to any single argument method insideAnnotatedCommandHandlerafter which the method will be a candidate for command message handling.
The single method argument type is matched against the concrete command type usingClass.isAssignableFrom(Class).
The method accessibility can be any combination of private, protected, public, etc.
The method may return a value or void.