Package org.axonframework.messaging.core.configuration

Class MessagingConfigurationDefaults

java.lang.Object

org.axonframework.messaging.core.configuration.MessagingConfigurationDefaults

All Implemented Interfaces:

ConfigurationEnhancer

public class MessagingConfigurationDefaults
extends Object
implements ConfigurationEnhancer

A ConfigurationEnhancer registering the default components of the MessagingConfigurer.

Will only register the following components if there is no component registered for the given class yet:

• Registers a ClassBasedMessageTypeResolver for class MessageTypeResolver
• Registers a JacksonConverter for class Converter
• Registers a DelegatingMessageConverter using the default JacksonConverter.
• Registers a DelegatingEventConverter using the default JacksonConverter.
• Registers a DefaultCorrelationDataProviderRegistry for class CorrelationDataProviderRegistry containing the MessageOriginProvider.
• Registers a DefaultDispatchInterceptorRegistry for class DispatchInterceptorRegistry containing an CorrelationDataInterceptor if there are CorrelationDataProviders present.
• Registers a DefaultHandlerInterceptorRegistry for class HandlerInterceptorRegistry containing an CorrelationDataInterceptor if there are CorrelationDataProviders present.
• Registers a TransactionalUnitOfWorkFactory for class UnitOfWorkFactory
• Registers a SimpleCommandBus for class CommandBus
• Registers a CommandPriorityCalculator.defaultCalculator() for class CommandPriorityCalculator
• Registers a AnnotationRoutingStrategy for class RoutingStrategy
• Registers a DefaultCommandGateway for class CommandGateway
• Registers a DefaultEventGateway for class EventGateway
• Registers a SimpleQueryBus for class QueryBus
• Registers a SimpleQueryUpdateEmitter for class QueryUpdateEmitter
• Registers a QueryPriorityCalculator.defaultCalculator() for class QueryPriorityCalculator
• Registers a DefaultQueryGateway for class QueryGateway
• Registers a DefaultMessageMonitorRegistry for class MessageMonitorRegistry

Furthermore, this enhancer will decorate the:

• The CommandGateway in a ConvertingCommandGateway with the present MessageConverter.
• The CommandBus in a InterceptingCommandBus if there are any MessageDispatchInterceptors present in the DispatchInterceptorRegistry or MessageHandlerInterceptors present in the HandlerInterceptorRegistry.
• The QueryBus in a InterceptingQueryBus if there are any MessageDispatchInterceptors present in the DispatchInterceptorRegistry or MessageHandlerInterceptors present in the HandlerInterceptorRegistry.

Since:

5.0.0

Author:

Steven van Beelen

Field Summary

Fields

Modifier and Type	Field	Description
static final int	CONVERTING_COMMAND_GATEWAY_ORDER	The order in which the ConvertingCommandGateway is applied to the CommandGateway in the ComponentRegistry.
static final int	ENHANCER_ORDER	The order of this enhancer compared to others, equal to Integer.MAX_VALUE.

Constructor Summary

Constructors

Constructor	Description
MessagingConfigurationDefaults()

Method Summary

Modifier and Type	Method	Description
void	enhance(ComponentRegistry registry)	Enhances the given registry with, for example, additional components and decorators.
int	order()	Returns the relative order this enhancer should be invoked in, compared to other instances.

Methods inherited from class java.lang.Object

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

Field Details

ENHANCER_ORDER

public static final int ENHANCER_ORDER

The order of this enhancer compared to others, equal to Integer.MAX_VALUE.

See Also:

• Constant Field Values

CONVERTING_COMMAND_GATEWAY_ORDER

public static final int CONVERTING_COMMAND_GATEWAY_ORDER

The order in which the ConvertingCommandGateway is applied to the CommandGateway in the ComponentRegistry. As such, any decorator with a lower value will be applied to the delegate, and any higher value will be applied to the ConvertingCommandGateway itself. Using the same value can either lead to application of the decorator to the delegate or the converting command gateway, depending on the order of registration.

The order of the ConvertingCommandGateway is set to Integer.MIN_VALUE + 100 to ensure it is applied very early in the configuration process, but not the earliest to allow for other decorators to be applied.

See Also:

• Constant Field Values

Constructor Details

MessagingConfigurationDefaults

public MessagingConfigurationDefaults()

Method Details

order

public int order()

Description copied from interface: ConfigurationEnhancer

Returns the relative order this enhancer should be invoked in, compared to other instances.

Use lower (negative) values for enhancers providing sensible defaults, and higher values for enhancers that should be able to override values potentially previously set. Defaults to 0 when not set.

Specified by:

order in interface ConfigurationEnhancer

Returns:

The order in which this enhancer should be invoked.

enhance

public void enhance(@Nonnull
 ComponentRegistry registry)

Description copied from interface: ConfigurationEnhancer

Enhances the given registry with, for example, additional components and decorators.

Specified by:

enhance in interface ConfigurationEnhancer

Parameters:

registry - The registry instance to enhance.