Hi Rochana,
sorry for late response.
first of all, the structure of BundledProductOffering and attached Option still exists for backward compatibility and for cases where the complexity introduced with BundledGroup is not necessary, so you surely can build a hierarchy without using the new structure.
Concerning the new BundledGroup: It is a collection of ProductOfferings (modeled as BundledProductOfferings) from which a customer may choose; the total number of Product instances that he may choose is defined by the Option element attached to the Group, and for each of the BundledProductOfferings, the attached Option then defines how many instances the Customer may choose from that particular ProductOffering.
Imagine a structure like this:
The PO "Bundle" has (possibly amongst others) a group that refers to two different kinds of accessories. From "Accessory 1", the customer may choose between 2 and 4, and from "Accessory 2" he may also take between 1 and 4. But in total, he can must choose at least 4, up to 7 in total. So he may not choose 2 of "Accessory 1" and 1 of "Accessory 2", because that is less than the required total of at least 4, and he may also not chose the maximum numbers of both types of Accessories, because that exceeded the total of 7.
Using the "bundledGroupProductOffering" self-association, more complex restrictions can be built if necessary.
Does this clarify the new Group structure?
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Lutz Bettge
Deutsche Telekom AG
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