eventhandler ordering details

Imported from Google Groups
1

Hi,

Trying to get ordering of @EventHandler to work I made the following observations :

  • It does not work unless you define a cluster. This was surprising to me.
  • I also had to explicitly configure an order resolver :

`
<axon:cluster id=“defaultCluster” default=“true”>
<axon:ordered order-resolver-ref=“eventHandlerOrderResolver”/>
</axon:cluster>

`

and

@Bean public OrderResolver eventHandlerOrderResolver() { return new SpringAnnotationOrderResolver(); }

… even though the documentation AFAIU states otherwise:

Clusters that have been defined in a Spring context using the <axon:cluster /> element automatically check for Spring’s @Order annotation on handler classes. Alternatively, an “order-resolver-ref” attribute can be used to refer to another Order resolver to use.

Note this is still Axon v2.4.5, maybe in 3.x it works differently.

Greetings,
Jorg Heymans

2

Hmm… it’s actually enough to just mention <axon:ordered />. It then defaults to using the Spring @Order annotation.
So this is the setup required:
<axon:cluster id=“defaultCluster” default=“true”>
<axon:ordered />
</axon:cluster>

Cheers,

Allard