Package org.axonframework.modelling.annotation

Class AnnotationBasedEntityIdResolver<T>

java.lang.Object

org.axonframework.modelling.annotation.AnnotationBasedEntityIdResolver<T>

Type Parameters:

T - The type of the identifier to resolve.

All Implemented Interfaces:

EntityIdResolver<T>

public class AnnotationBasedEntityIdResolver<T>
extends Object
implements EntityIdResolver<T>

Implementation of a EntityIdResolver that inspects the payload of a Message for fields or methods annotated with TargetEntityId.

Multiple fields may be annotated, but only exactly one must resolve one distinct non-null value.

If no ids or multiple ids are found, an EntityIdResolutionException is thrown.

For performance reasons, the resolved identifier members are cached per payload type.

Since:

5.0.0

Author:

Mitchell Herrijgers

See Also:

• TargetEntityId
• EntityIdResolver

Constructor Summary

Constructors

Constructor	Description
AnnotationBasedEntityIdResolver()

Method Summary

Modifier and Type	Method	Description
T	resolve(Message message, ProcessingContext context)	Resolve the id of the entity from the given message and context.

Methods inherited from class java.lang.Object

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

Constructor Details

AnnotationBasedEntityIdResolver

public AnnotationBasedEntityIdResolver()

Method Details

resolve

@Nonnull
public T resolve(@Nonnull
 Message message,
 @Nonnull
 ProcessingContext context)
          throws EntityIdResolutionException

Description copied from interface: EntityIdResolver

Resolve the id of the entity from the given message and context.

Specified by:

resolve in interface EntityIdResolver<T>

Parameters:

message - The message to resolve the id from.

context - The context in which the message is processed.

Returns:

The id of the entity.

Throws:

EntityIdResolutionException - When the id could not be resolved.