----- Original Message ----- From: "avi tal" <atal@redhat.com> To: "Ori Liel" <oliel@redhat.com> Cc: "michael pasternak" <mpastern@redhat.com>, engine-devel@ovirt.org Sent: Tuesday, May 1, 2012 3:58:35 PM Subject: Logical network Usages collection problematic approach

Hi, The new design of logical network 'usages' collection came out a bit problematic or shall i say annoying. The idea is to send the entire collection elements every time a user wants to update a single usage otherwise the missing elements will be automatically removed from the collection.

Example: having <usages><usage>VM</usage><usages> 1. in order to add 'display' usage to the collection i must send 'vm' as well. 2. to remove an element from the collection, i must send the entire collection without the desired element (note: in this case it is only one extra element for every update but in other cases it could be much more)

The solution should be: <usages><vm>true</vm><display>false</display></usages> That way we can send a single usage having different boolean text without including the entire collection elements.

The question is, how flexible should usages be. If we don't expect more usages to be added in the future, then the hard-coded modelling that you suggest is ok, and I have no problem with it. If more usages are expected to be added, then there's added value to keeping it generic. Ori