Java:带注释的注释(和传递值) [英] Java: Annotated Annotations (and passing values)

问题描述

我有一个注释，其中确实包含其他几个注释，非常类似于此处的注释:

I have a annotation that does include several other annotations, pretty much like this one here:

@Component // Spring Component
@Interface OsgiService { boolean isFactory() }

表示所有用@OsgiService注释的类也将自动注释为@Component.哪个工作正常.

meaning that all classes annotated with @OsgiService shall automatically also be annotated as @Component. Which works fine.

但是，现在，我想添加另一个注释，该注释的参数取决于@OsgiService的isFactory参数.

Now however, I'd like to add another annotation, that has a parameter which is dependent of the isFactory parameter of @OsgiService.

@Component // Spring Component
@Scope(isFactory() ? "prototype" : "singleton")
@Interface OsgiService { boolean isFactory() }

这不起作用.但是，由于批注的isFactory属性需要为静态值，因此不应该有这样的东西吗?

Which does not work. However, as isFactory property of an annotation requires to be a static value, shouldn't it be possible to have something like this?

推荐答案

我认为这不可能.

您可以创建两个注释:@OsgiService和@OsgiServiceFactory

You can create two annotations: @OsgiService and @OsgiServiceFactory

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