@Conditional对继承的类不起作用？

Question

I have a simple class annotated with @Conditional(MyCondition.class)

eg:

@Conditional(MyCondition.class)
public class MyBean {
  ...
}

Then I have a configuration bean which extends this bean:

@Configuration
public class MyConfig extends MyBean {
  ...
}

It seems that the @Conditional is being ignored and the @Configuration is always processed no matter how the condition would resolve (it's not even called)

As soon as I move the @Conditional annotation to the MyConfig everything works as expected.

From the doc:

The @Conditional annotation may be used in any of the following ways:

• as a type-level annotation on any class directly or indirectly annotated with @Component, including @Configuration classes
• as a meta-annotation, for the purpose of composing custom stereotype annotations
• as a method-level annotation on any @Bean method

I would assume the first point applies here, ie MyConfig is indirectly annotated with @Configuration . Or does the indirectly refer to other annotations which are annotated with @Conditional ?

Thanks for the insight

Answer 1

According to the javadoc of @Conditional

NOTE: @Conditional annotations are not inherited; any conditions from superclasses or from overridden methods are not being considered.

The @Conditional annotation isn't @Inherited and as such it isn't visible on sub classes.