Art. 58 O.G.; appeal against a conditional judgment dependent on a future procedural determination; only a final, unconditional judgment is appealable. A cantonal decision that merely states that the claim will be upheld or dismissed depending on whether an oath is taken does not constitute a Haupturteil. The judgment becomes appealable only after the competent court has established whether the oath was performed or refused; the manner of that determination is governed by cantonal procedural law. If it is made by a new judgment, the ordinary appeal period under Art. 65 O.G. applies; if it is merely recorded in the minutes, the period runs from that record.