Hi Lada, 

So you have a base identify of foo-type and subordinates of foo-type-1, 
foo-type-2, ... foo-type-9. You have a data leaf that type identityref foo-type 
but the actual instantiation is not one of the known foo-types. Should a 
foo-type-unknown be defined to return for this case or should one just return 
foo-type?  

Thanks,
Acee

On 5/3/18, 1:49 PM, "netmod on behalf of Ladislav Lhotka" 
<[email protected] on behalf of [email protected]> wrote:

    Hi Acee,
    
    I am not sure what you mean by unknown identities. In general, the identity 
used
    as the base of an identityref (or in Xpath functions 
derived-from/derived-from-
    or-self) should be the most general identity that can match at the given 
place.
    
    Do you have any example illustrating your case?
    
    Lada
    
    
    On Thu, 2018-05-03 at 17:30 +0000, Acee Lindem (acee) wrote:
    > Let’s say one define a base identity with a hierarchy of identifyref’s 
using
    > it. This will allow for augmentation in future models. Should one also 
define
    > an identityref for the class of unknown identities? Or, should one simply
    > return the lowest parent in the hierarchy matching the value? Many times, 
this
    > would be the base identity.
    >  
    > Thanks,
    > Acee
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    -- 
    Ladislav Lhotka
    Head, CZ.NIC Labs
    PGP Key ID: 0xB8F92B08A9F76C67
    
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