Hello,
I have a small concept app I m building with Seam.
I m trying to figure out what is the best way to handle a scenario where a
number of classes which have a parent/child relationship to each other are also
properties of a certain class.
To illustrate, here is a small example where this scenario may occur.
Lets say we have a Address class that looks like this:
| @Entity
| class Address {
| private Country country;
| private State state;
| private City city;
| }
|
| @Entity
| class Country {
| private State[] state;
| }
|
| @Entity
| class State {
| private Country country;
| private City[] city;
| }
|
| @Entity
| class City {
| private State state;
| }
|
|
The idea here is that these classes are all properties of the Address class,
yet all these properties have a parent/Child relationship to one another.
Classes Country/State/City maybe used as:
- Drop down menus
- in drill down screens from Country->State->City->AddressList
- Constraints on on the Address class. (Entering a City that is not part of a
certain State).
I d really like to hear peoples thoughts on this matter, I been trying to
identify documentation from various sources to make sure this is a good idea or
not, but havent seen this scenario yet, wich gives me doubts about its
viability.
Would it be better to use a Categorize class or something to store association
as opposed to having the association on the object in this case?
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