public IEnumerable <Triple> SP(string s, string p) { var sh = KeySegments.GetNameSKeySubjectPredicate(_name, s, p); var startS = KeyConfig.ConcatBytes(sh, KeyConfig.ByteZero); var endS = KeyConfig.ConcatBytes(sh, KeyConfig.ByteOne); return(new RocksEnumerable(_db, startS, endS, (Iterator it) => { return it.Next(); })); }
public IEnumerable <Triple> SP(string s, string p, Triple c) { var sh = KeySegments.GetNameSKeySubjectPredicate(_name, s, p); var startS = KeyConfig.ConcatBytes(sh, KeyConfig.ByteZero); var endS = KeyConfig.ConcatBytes(sh, KeyConfig.ByteOne); // todo: optimize var(sKey, _, _) = new KeySegments(_name, c).GetKeys(); var continuation = KeyConfig.ConcatBytes(sKey, KeyConfig.ByteOne); if (KeyConfig.ByteCompare(continuation, startS) < 0) { throw new InvalidOperationException("Invalid continuation token. Before range"); } else if (KeyConfig.ByteCompare(continuation, endS) > 0) { return(Enumerable.Empty <Triple>()); } return(new RocksEnumerable(_db, continuation, endS, (Iterator it) => { return it.Next(); })); }