public bool OpNarudzbineInsert(DbItemNarudzbine narudzbina)
        {
            OpNaruzbineInsert op = new OpNaruzbineInsert();

            op.NaruzbineDataSelect = new DbItemNarudzbine()
            {
                datum_narudzbine = narudzbina.datum_narudzbine,
                id_oprema        = narudzbina.id_oprema,
                id_prodavca      = narudzbina.id_prodavca,
                kolicina         = narudzbina.kolicina
            };
            OperationObject rezultat = OperationManager.Singleton.executeOp(op);

            return(rezultat.Success);
        }
        public DbItemNarudzbine[] OpNarudzbinePrihvatiNarudzbinu(DbItemNarudzbine narudzbina)
        {
            OpNaruzbinePrihvati op = new OpNaruzbinePrihvati();

            op.NaruzbineDataSelect = new DbItemNarudzbine()
            {
                id_narudzbine    = narudzbina.id_narudzbine,
                datum_narudzbine = narudzbina.datum_narudzbine,
                id_oprema        = narudzbina.id_oprema,
                id_prodavca      = narudzbina.id_prodavca,
                kolicina         = narudzbina.kolicina
            };
            OperationObject rezultat = OperationManager.Singleton.executeOp(op);

            DbItemNarudzbine[] niz = rezultat.Niz as DbItemNarudzbine[];
            return(niz);
        }