Decorator example in Java EE

Decorator example in Java EE


@Decorator
public class MyDecorator implements MyService {
@Inject @Delegate MyService myService;

public String hello() {
return "Decorated " + myService.hello();
}
}

to enable the decorator, either add an xml element in de beans xml

<decorators>
<class>com.arcevco.MyDecorator</class>
</decorators>

or add a priority to the code

@Decorator
@Priority(Interceptor.Priority.APPLICATION)
public class MyDecorator implements MyService {
@Inject @Delegate MyService myService;

public String hello() {
return "Decorated " + myService.hello();
}
}

Decorators enabled using @Priority are called before decorators enabled using beans.xml, the lower priority values are called first.

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