Intantiation problem in iogi param provider

[ghost]

All Objects is be instantiate but no parameters is provided in request . Example

public void inst(Person person,Phone phone) {}

if request some url to controller => inst?person.id=1 both parameteres is instantiate when one of them (phone) should be null

[rafaeldff]

Thanks for your report, and for the contribution.

I'm torn on what to do about this issue, though. It may be useful to be able to get null when no parameter is received, but often it will just mask a bug. Nulls are evil.

Ideally the user should be able to specify for a specific Target whether she wants to get nulls. We do have this possibility for the type converters, with the FallbackConverter infrastructure: https://github.com/rafaeldff/Iogi/blob/master/src/br/com/caelum/iogi/conversion/FallbackConverter.java#L10 . Maybe we could broaden it's scope to general objects.