org.axonframework.commandhandling.distributed

Class AbstractRoutingStrategy

java.lang.Object

org.axonframework.commandhandling.distributed.AbstractRoutingStrategy

All Implemented Interfaces:

RoutingStrategy

Direct Known Subclasses:

AnnotationRoutingStrategy, MetaDataRoutingStrategy

public abstract class AbstractRoutingStrategy
extends Object
implements RoutingStrategy

Abstract implementation of the RoutingStrategy interface that includes a fallback RoutingStrategy which prescribes what happens when routing cannot be resolved by this implementation.

Since:

2.0

Author:

Allard Buijze

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractRoutingStrategy(RoutingStrategy fallbackRoutingStrategy) Initializes the strategy using given RoutingStrategy prescribing the fallback approach when this implementation cannot resolve a routing key.
	AbstractRoutingStrategy(UnresolvedRoutingKeyPolicy fallbackRoutingStrategy) Deprecated. in favor of AbstractRoutingStrategy(RoutingStrategy)

Method Summary

Modifier and Type	Method and Description
protected abstract String	doResolveRoutingKey(CommandMessage<?> command) Resolve the Routing Key for the given command.
String	getRoutingKey(CommandMessage<?> command) Generates a routing key for the given command.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractRoutingStrategy

@Deprecated
public AbstractRoutingStrategy(@Nonnull
                                           UnresolvedRoutingKeyPolicy fallbackRoutingStrategy)

Deprecated. in favor of AbstractRoutingStrategy(RoutingStrategy)

Initializes the strategy using given UnresolvedRoutingKeyPolicy prescribing the fallback approach when this implementation cannot resolve a routing key.

Parameters:

fallbackRoutingStrategy - the fallback routing to use whenever this RoutingStrategy doesn't succeed

AbstractRoutingStrategy

protected AbstractRoutingStrategy(@Nonnull
                                  RoutingStrategy fallbackRoutingStrategy)

Initializes the strategy using given RoutingStrategy prescribing the fallback approach when this implementation cannot resolve a routing key.

Parameters:

fallbackRoutingStrategy - the fallback routing to use whenever this RoutingStrategy doesn't succeed

Method Detail

getRoutingKey

public String getRoutingKey(@Nonnull
                            CommandMessage<?> command)

Description copied from interface: RoutingStrategy

Generates a routing key for the given command. Commands that should be handled by the same segment, should result in the same routing key.

Specified by:

getRoutingKey in interface RoutingStrategy

Parameters:

command - the command to create a routing key for

Returns:

the routing key for the command

doResolveRoutingKey

protected abstract String doResolveRoutingKey(@Nonnull
                                              CommandMessage<?> command)

Resolve the Routing Key for the given command.

Parameters:

command - the command to resolve the routing key for

Returns:

the String representing the Routing Key, or null if unresolved