io.micronaut.aop

Annotation Type Adapter

@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.

Since:

1.0

Author:

graemerocher

Required Element Summary

Required Elements

Modifier and Type	Required Element and Description
Class<?>	value The target interface to adapt.

Element Detail

value

public abstract Class<?> value

The target interface to adapt.

Returns:

An interface to adapt