Hello,
I am experimenting with Seam's new Application Framework stuff (EnitityHome, etc.) in
order to write as little code as possible for doing trivial things (CRUD, in particular).
The question I have relates to editing a parent object and attributes of child objects
from within the same form. Specifically, I have a "Person" class that contains
an instance of an "EmailAddress" class as a property. The EmailAddress has a
"locationAddress" propety that contains the actual address String. The
EmailAddress will initially be null (which is a legitimate case). I want to use a single
"Person" editing form for capturing the Person's simple propeties and a
simple text input in that for for the email address. The problem I am looking for advice
on is how to deal with intelligently instantiating an EmailAddress when a user enters a
string. Since the the emailAddress property of the Person instance is initially null,
JSF binding fails when a user enters an email address in the form. (the binding
expression for the email inputText is #{myperson.emailAddress.locationAddress}).
Does anyone have any clean solutions for automagically instantiating an EmailAddress
instance and binding it to the Person's emailAddress property prior to binding the
provided emailAddress string to it?
I realize I could add properties and logic to my Home class to deal with this, or provide
delegate transient properties on my Person class, but I am hoping to avoid this, since
this is a pretty common situation and I would like as clean a solution as possible.
This is not specific to Seam, or the App Framework, or JSF for that matter, but I am
hoping someone has some thoughts on it....
Thanks,
Shea.
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