AnnotationConfigApplicationContext and parent context

Question

I\'m facing an issue trying to define a context hierarchy using AnnotationConfigApplicationContext.

The problem is when defining a module context insid

Answer 1

Don't use XML for the child context. Use ctx.setParent then ctx.register. Like this:

public class ParentForAnnotationContextExample {

    public static void main(String[] args) {
        ApplicationContext parentContext = new AnnotationConfigApplicationContext(ParentContext.class);

        AnnotationConfigApplicationContext childContext = new AnnotationConfigApplicationContext();
        childContext.setParent(parentContext);
        childContext.register(ChildContext.class); //don't add in the constructor, otherwise the @Inject won't work
        childContext.refresh();

        System.out.println(childContext.getBean(ParentBean.class));
        System.out.println(childContext.getBean(ChildBean.class));

        childContext.close();
    }

    @Configuration
    public static class ParentContext {
        @Bean ParentBean someParentBean() {
            return new ParentBean();
        }
    }

    @Configuration
    public static class ChildContext {
        @Bean ChildBean someChildBean() {
            return new ChildBean();
        }
    }

    public static class ParentBean {}

    public static class ChildBean {
        //this @Inject won't work if you use ChildContext.class in the child AnnotationConfigApplicationContext constructor
        @Inject private ParentBean injectedFromParentCtx;
    }
}