org.axonframework.eventsourcing.conflictresolution

Class ConflictResolution

java.lang.Object

org.axonframework.eventsourcing.conflictresolution.ConflictResolution

All Implemented Interfaces:

org.axonframework.messaging.annotation.ParameterResolver<ConflictResolver>, org.axonframework.messaging.annotation.ParameterResolverFactory

public class ConflictResolution
extends Object
implements org.axonframework.messaging.annotation.ParameterResolverFactory, org.axonframework.messaging.annotation.ParameterResolver<ConflictResolver>

ParameterResolverFactory that add support for the ConflictResolver parameter type in annotated handlers.

Conflict resolution can be initialized by passing a ConflictResolver to the static initialize(ConflictResolver) method. Note that a UnitOfWork needs to be active before conflict resolution can be initialized.

Author:

Rene de Waele

Constructor Summary

Constructors

Constructor and Description
ConflictResolution()

Method Summary

Modifier and Type	Method and Description
org.axonframework.messaging.annotation.ParameterResolver	createInstance(Executable executable, Parameter[] parameters, int parameterIndex)
static ConflictResolver	getConflictResolver() Returns the ConflictResolver instance that can be used to resolve conflicts of an Aggregate that has been previously loaded in this Unit of Work.
static void	initialize(ConflictResolver conflictResolver) Initialize conflict resolution in the context of the current Unit of Work dealing with a command on an event sourced aggregate.
boolean	matches(org.axonframework.messaging.Message<?> message)
ConflictResolver	resolveParameterValue(org.axonframework.messaging.Message<?> message)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.axonframework.messaging.annotation.ParameterResolver

supportedPayloadType

Constructor Detail

ConflictResolution

public ConflictResolution()

Method Detail

initialize

public static void initialize(ConflictResolver conflictResolver)

Initialize conflict resolution in the context of the current Unit of Work dealing with a command on an event sourced aggregate.

Parameters:

conflictResolver - conflict resolver able to detect conflicts

getConflictResolver

public static ConflictResolver getConflictResolver()

Returns the ConflictResolver instance that can be used to resolve conflicts of an Aggregate that has been previously loaded in this Unit of Work. Note that, when multiple aggregates are loaded, the ConflictResolver that was registered last, is returned.

Any conflicts must be resolved (by invoking one of the methods on ConflictResolver) before the Unit of Work is committed.

If no Aggregate was loaded, or no conflicts are present, this method will return a NoConflictResolver, instance.

Returns:

The ConflictResolver for the last loaded Aggregate.

createInstance

public org.axonframework.messaging.annotation.ParameterResolver createInstance(Executable executable,
                                                                               Parameter[] parameters,
                                                                               int parameterIndex)

Specified by:

createInstance in interface org.axonframework.messaging.annotation.ParameterResolverFactory

resolveParameterValue

public ConflictResolver resolveParameterValue(org.axonframework.messaging.Message<?> message)

Specified by:

resolveParameterValue in interface org.axonframework.messaging.annotation.ParameterResolver<ConflictResolver>

matches

public boolean matches(org.axonframework.messaging.Message<?> message)

Specified by:

matches in interface org.axonframework.messaging.annotation.ParameterResolver<ConflictResolver>