Refreshing
The AcrossContext is refreshed once, right before it is fully bootstrapped. Refresh happens after all individual modules have bootstrapped and all beans have been exposed, but before the after-bootstrap installers have run.
There are several ways to hook into the refresh phase:
@Refreshable
Any bean annotated with @Refreshable will be autowired twice.
Once when it gets created, and once when the AcrossContext is refreshed.
You can use this for optional dependencies where the value might be exposed by a later module.
Although the functionality is there, you should probably avoid using @Refreshable and prefer @PostRefresh or subscribing to one of the bootstrap related events.
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@PostRefresh
Much like @PostConstruct, a bean can have one or more @PostRefresh methods.
These will be executed when the AcrossContext is refreshed.
@RefreshableCollection
@RefreshableCollection is an annotation to qualify dependencies being autowired.
It can only be used on dependencies of type Collection.
When using @RefreshableCollection, instead of a regular collection of beans, a RefreshableRegistry will be wired.
The behaviour and type of the RefreshableRegistry can be determined through the annotation attributes.
@Autowired
public void setMyBeans( @RefreshableCollection(includeModuleInternals=true) Collection<MyBean> myBeans ) {
this.myBeans = myBeans;
}RefreshableRegistry
A RefreshableRegistry is a collection of beans of a specified class that updates itself once when the AcrossContext is refreshed.
A RefreshableRegistry can also scan for beans inside the other modules in the running context, without the need for those beans to be exposed.
This allows other modules to pick up extensions or configurations from other modules that bootstrap later.
The value of a RefreshableRegistry are also ordered according to the Across module order hierarchy.
IncrementalRefreshableRegistry is a specialization that updates its values every time a module has bootstrapped.