Is there a spring lazy proxy factory in Spring?

Question

Wicket has this device called a lazy proxy factory. Given:

the idea is to auto-generate a prox

Answer 1

See LazyInitTargetSource; that might do what you want. It requires use of lazy-init="true" on the target bean as well, though.

Answer 2

Spring singleton beans, the closest thing to what you want, are created when the spring context is initialized: http://static.springsource.org/spring/docs/2.0.x/reference/beans.html#beans-factory-scopes. So I believe the short answer is "no." You can implement your own scope to do this by extending the Spring classes quite easily, though.

Answer 3

Spring session/request scope is implemented using the technique you describe, but it is only intended to handle transitions between scope cardinalities, not instance creation. So spring uses the same concepts, but you'd probably have to create your own implementation.