org.axonframework.commandhandling.distributed

Enum UnresolvedRoutingKeyPolicy

java.lang.Object

java.lang.Enum<UnresolvedRoutingKeyPolicy>

org.axonframework.commandhandling.distributed.UnresolvedRoutingKeyPolicy

All Implemented Interfaces:

Serializable, Comparable<UnresolvedRoutingKeyPolicy>

public enum UnresolvedRoutingKeyPolicy
extends Enum<UnresolvedRoutingKeyPolicy>

Since:

2.0

Author:

Allard Buijze

Enum Constant Summary

Enum Constants

Enum Constant and Description
ERROR Policy that indicates that Routing Key resolution should fail with an Exception when no routing key can be found for a Command Message.
RANDOM_KEY Policy that indicates a random key is to be returned when no Routing Key can be found for a Command Message.
STATIC_KEY Policy that indicates a fixed key ("unresolved") should be returned when no Routing Key can be found for a Command Message.

Method Summary

Methods

Modifier and Type	Method and Description
static UnresolvedRoutingKeyPolicy	valueOf(String name) Returns the enum constant of this type with the specified name.
static UnresolvedRoutingKeyPolicy[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

ERROR

public static final UnresolvedRoutingKeyPolicy ERROR

Policy that indicates that Routing Key resolution should fail with an Exception when no routing key can be found for a Command Message.

When the routing key is based on static content in the Command Message, the exception raised should extend from AxonNonTransientException to indicate that retries do not have a chance to succeed.

RANDOM_KEY

public static final UnresolvedRoutingKeyPolicy RANDOM_KEY

Policy that indicates a random key is to be returned when no Routing Key can be found for a Command Message. Although not required to be fully random, implementations are required to return a different key for each incoming command. Multiple invocations for the same command message may return the same value, but are not required to do so.

This effectively means the Command Message is routed to a random segment.

STATIC_KEY

public static final UnresolvedRoutingKeyPolicy STATIC_KEY

Policy that indicates a fixed key ("unresolved") should be returned when no Routing Key can be found for a Command Message. This effectively means all Command Messages with unresolved routing keys are routed to a the same segment. The load of that segment may therefore not match the load factor.

Method Detail

values

public static UnresolvedRoutingKeyPolicy[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (UnresolvedRoutingKeyPolicy c : UnresolvedRoutingKeyPolicy.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static UnresolvedRoutingKeyPolicy valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null