nested collections + domain objects + inheritance

[infinity2heaven]

[Deleting the original post as it was incorrect]

Have an interesting discovery that might be useful to a lot of newbies.

If you have a nested collections object in your domain object and you have a page flow in your use case where you would like to capture
the properties and its respective associations (in one or multiple pages) you could leverage Spring's <form:form> tag like this

<form:input path="study[0].site.address.city" />

However a caveat is that you should initialise your collections (nested), the best way to do this is in formBackingObject.

I find this feature incredibly powerful and useful as it eliminates the use of separate command objects and data binding happens automatically with Springs DataBinder (inc beans with inheritance)