Module dk.cloudcreate.essentials.reactive

Package dk.cloudcreate.essentials.reactive.command.interceptor

Class CommandBusInterceptorChain.DefaultCommandBusInterceptorChain

java.lang.Object

dk.cloudcreate.essentials.reactive.command.interceptor.CommandBusInterceptorChain.DefaultCommandBusInterceptorChain

All Implemented Interfaces:

CommandBusInterceptorChain

Enclosing interface:

CommandBusInterceptorChain

public static class CommandBusInterceptorChain.DefaultCommandBusInterceptorChain
extends Object
implements CommandBusInterceptorChain

Default implementation for the CommandBusInterceptorChain. It's recommended to use CommandBusInterceptorChain.newInterceptorChain(Object, CommandHandler, List, BiFunction, Function) to create a new chain

Nested Class Summary

Nested classes/interfaces inherited from interface dk.cloudcreate.essentials.reactive.command.interceptor.CommandBusInterceptorChain

CommandBusInterceptorChain.DefaultCommandBusInterceptorChain

Constructor Summary

Constructors

Constructor	Description
DefaultCommandBusInterceptorChain(Object command, CommandHandler matchedCommandHandler, List<CommandBusInterceptor> interceptors, BiFunction<CommandBusInterceptor,CommandBusInterceptorChain,Object> interceptorOperationInvoker, Function<Object,Object> defaultCommandBusBehaviour)	Create a new CommandBusInterceptorChain instance for the handling of a Command

Method Summary

Modifier and Type	Method	Description
Object	command()	The command associated with the interceptor chain
CommandHandler	matchedCommandHandler()	The single CommandHandler the responded true to CommandHandler.canHandle(Class)
Object	proceed()	To continue the processing a CommandBusInterceptor will call this method, which in turn will call other CommandBusInterceptor's (if more interceptors are configured) and finally the LocalCommandBus's default implementation will be called. If the CommandBusInterceptor can provide a result without calling the default LocalCommandBus behaviour then it can just return its (e.g. cached) result and not call CommandBusInterceptorChain.proceed()

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultCommandBusInterceptorChain

public DefaultCommandBusInterceptorChain(Object command,
 CommandHandler matchedCommandHandler,
 List<CommandBusInterceptor> interceptors,
 BiFunction<CommandBusInterceptor,CommandBusInterceptorChain,Object> interceptorOperationInvoker,
 Function<Object,Object> defaultCommandBusBehaviour)

Create a new CommandBusInterceptorChain instance for the handling of a Command

Parameters:

command - the command instance

matchedCommandHandler - the single CommandHandler the responded true to CommandHandler.canHandle(Class)

interceptors - the ordered CommandBusInterceptor's (can be an empty List if no interceptors have been configured)

interceptorOperationInvoker - the function responsible for calling the correct CommandBusInterceptor send method

defaultCommandBusBehaviour - the function invoking the default LocalCommandBus send method logic

Method Details

proceed

public Object proceed()

Description copied from interface: CommandBusInterceptorChain

To continue the processing a CommandBusInterceptor will call this method, which in turn will call other CommandBusInterceptor's (if more interceptors are configured) and finally the LocalCommandBus's default implementation will be called.
If the CommandBusInterceptor can provide a result without calling the default LocalCommandBus behaviour then it can just return its (e.g. cached) result and not call CommandBusInterceptorChain.proceed()

Specified by:

proceed in interface CommandBusInterceptorChain

Returns:

the result of the operation

command

public Object command()

Description copied from interface: CommandBusInterceptorChain

The command associated with the interceptor chain

Specified by:

command in interface CommandBusInterceptorChain

Returns:

The command associated with the interceptor chain

matchedCommandHandler

public CommandHandler matchedCommandHandler()

Description copied from interface: CommandBusInterceptorChain

The single CommandHandler the responded true to CommandHandler.canHandle(Class)

Specified by:

matchedCommandHandler in interface CommandBusInterceptorChain

Returns:

the matched command handler