const Asset::Ident
createIdent (Query<STRU> const& query)
{
// does the query somehow specify the desired name-ID?
string nameID = query.extractID (genericIdSymbol);
if (isnil (nameID))
nameID = query.extractID (StructTraits<STRU>::idSymbol());
if (isnil (nameID))
{
// no name-ID contained in the query...
// so we'll create a new one
static int i=0;
nameID = _Fmt("%s.%d")
% StructTraits<STRU>::namePrefix()
% (++i);
}
ENSURE (!isnil (nameID));
// does the query actually demand the Nth instance/element?
string seqID = query.extractID (seqNrPredicate);
if (!isnil (seqID) && 1 < uNum(seqID))
nameID += "."+seqID;
Category cat (STRUCT, StructTraits<STRU>::catFolder());
return Asset::Ident (nameID, cat );
}
