@Documented
@Retention(value=RUNTIME)
@Target(value={ANNOTATION_TYPE,METHOD})
@DefaultScope(value=javax.inject.Singleton.class)
@Executable
public @interface Adapter
An Adapter is advice applicable to a method that will create an entirely new bean definition that delegates to the
annotated method.
Typically used in conjunction with an interface or class that provides a "Single Abstract Method" (or SAM) type.
An example of usage could be to introduce a ApplicationEventListener:
For example:
@Adapter(ApplicationEventListener)
public void onStartup(StartupEvent startupEvent) {
}
The above example will create a new bean that delegates to the onStartup method that is an instance of ApplicationEventListener.
The generic types are aligned and populated from the types defined in the method signature
This annotation can be used as a stereotype annotation. If for some reason the generated class cannot delegate to the method then a compilation error should occur.
| Modifier and Type | Required Element and Description |
|---|---|
java.lang.Class<?> |
value
The target interface to adapt.
|