builds a KeyVal for this key from a series of key val args
builds a KeyVal for this key from a series of key val args
longevity.exceptions.subdomain.ptype.NumPropValsException
if the
number of key val args does not match the number of properties in the key
longevity.exceptions.subdomain.ptype.PropValTypeException
if the
type of the key val arg does not not match the type of the corresponding
property in the key
returns the KeyVal for the supplied persistent
returns the KeyVal for the supplied persistent
the persistent
the set of properties that make up this key
a natural key for this persistent type. a set of properties for which, given specific property values for each of the properties, will match no more than one persistent instance.