使用Weld SE（CDI）异步创建bean的正确方法是什么？

Question

I am using a Weld SE container in my JavaFX application (via AfterburnerFX actually). A component is initialized (when a dialog window is shown to the user) and it's fields are injected. However, creating one of its dependencies takes much time.

Is there an available facility to instantiate a bean asynchronously directly in Weld SE? If not, what's a common design pattern to handle this?

Answer 1

If you want to control instantiation programmatically, you can inject a Provider for your component instead:

//Instead of
@Inject MyComponent comp;

// do this:
@Inject Provider<MyComponent> compProvider;

// Usage in code at any given time:
MyComponent comp = compProvider.get();

Note that you will probably get to the alternative Instance instead of Provider at some time in the future (or a different answer) which is an extended interface implementing provider and some more useful functions.