class DefaultTemporalPrimitive extends DefaultTemporalObject implements TemporalPrimitive, TemporalOrder, Comparable<TemporalPrimitive> {

    public RelativePosition relativePosition(TemporalPrimitive other) {
        if (this instanceof Instant && other instanceof Instant) {
            Instant timeobject = (Instant) this;
            Instant instantOther = (Instant) other;

            if (timeobject.getPosition().getDate().before(instantOther.getPosition().getDate())) {
                return RelativePosition.BEFORE;
            } else {
                return (timeobject.getPosition().getDate().compareTo(instantOther.getPosition().getDate()) == 0) ? RelativePosition.EQUALS : RelativePosition.AFTER;
            }

        } else {
            if (this instanceof Period && other instanceof Instant) {
                Period timeobject = (Period) this;
                Instant instantarg = (Instant) other;

                if (timeobject.getEnding().getPosition().getDate().before(instantarg.getPosition().getDate())) {
                    return RelativePosition.BEFORE;
                } else {
                    if (timeobject.getEnding().getPosition().getDate().compareTo(instantarg.getPosition().getDate()) == 0) {
                        return RelativePosition.ENDED_BY;
                    } else {
                        if (timeobject.getBeginning().getPosition().getDate().before(instantarg.getPosition().getDate()) &&
                                timeobject.getEnding().getPosition().getDate().after(instantarg.getPosition().getDate())) {
                            return RelativePosition.CONTAINS;
                        } else {
                            return (timeobject.getBeginning().getPosition().getDate().compareTo(instantarg.getPosition().getDate()) == 0) ? RelativePosition.BEGUN_BY : RelativePosition.AFTER;
                        }
                    }
                }
            } else {
                if (this instanceof Instant && other instanceof Period) {
                    Instant timeobject = (Instant) this;
                    Period instantarg = (Period) other;

                    if (instantarg.getEnding().getPosition().getDate().before(timeobject.getPosition().getDate())) {
                        return RelativePosition.AFTER;
                    } else {
                        if (instantarg.getEnding().getPosition().getDate().compareTo(timeobject.getPosition().getDate()) == 0) {
                            return RelativePosition.ENDS;
                        } else {
                            if (instantarg.getBeginning().getPosition().getDate().before(timeobject.getPosition().getDate()) &&
                                    instantarg.getEnding().getPosition().getDate().after(timeobject.getPosition().getDate())) {
                                return RelativePosition.DURING;
                            } else {
                                return (instantarg.getBeginning().getPosition().getDate().compareTo(timeobject.getPosition().getDate()) == 0) ? RelativePosition.BEGINS : RelativePosition.BEFORE;
                            }
                        }
                    }
                } else {
                    if (this instanceof Period && other instanceof Period) {
                        Period timeobject = (Period) this;
                        Period instantarg = (Period) other;

                        if (timeobject.getEnding().getPosition().getDate().before(instantarg.getBeginning().getPosition().getDate())) {
                            return RelativePosition.BEFORE;
                        } else {
                            if (timeobject.getEnding().getPosition().getDate().compareTo(instantarg.getBeginning().getPosition().getDate()) == 0) {
                                return RelativePosition.MEETS;
                            } else {
                                if (timeobject.getBeginning().getPosition().getDate().before(instantarg.getBeginning().getPosition().getDate()) &&
                                        timeobject.getEnding().getPosition().getDate().after(instantarg.getBeginning().getPosition().getDate()) &&
                                        timeobject.getEnding().getPosition().getDate().before(instantarg.getEnding().getPosition().getDate())) {
                                    return RelativePosition.OVERLAPS;
                                } else {
                                    if (timeobject.getBeginning().getPosition().getDate().compareTo(instantarg.getBeginning().getPosition().getDate()) == 0 &&
                                            timeobject.getEnding().getPosition().getDate().before(instantarg.getEnding().getPosition().getDate())) {
                                        return RelativePosition.BEGINS;
                                    } else {
                                        if (timeobject.getBeginning().getPosition().getDate().compareTo(instantarg.getBeginning().getPosition().getDate()) == 0 &&
                                                timeobject.getEnding().getPosition().getDate().after(instantarg.getEnding().getPosition().getDate())) {
                                            return RelativePosition.BEGUN_BY;
                                        } else {
                                            if (timeobject.getBeginning().getPosition().getDate().after(instantarg.getBeginning().getPosition().getDate()) &&
                                                    timeobject.getEnding().getPosition().getDate().before(instantarg.getEnding().getPosition().getDate())) {
                                                return RelativePosition.DURING;
                                            } else {
                                                if (timeobject.getBeginning().getPosition().getDate().before(instantarg.getBeginning().getPosition().getDate()) &&
                                                        timeobject.getEnding().getPosition().getDate().after(instantarg.getEnding().getPosition().getDate())) {
                                                    return RelativePosition.CONTAINS;
                                                } else {
                                                    if (timeobject.getBeginning().getPosition().getDate().compareTo(instantarg.getBeginning().getPosition().getDate()) == 0 &&
                                                            timeobject.getEnding().getPosition().getDate().compareTo(instantarg.getEnding().getPosition().getDate()) == 0) {
                                                        return RelativePosition.EQUALS;
                                                    } else {
                                                        if (timeobject.getBeginning().getPosition().getDate().after(instantarg.getBeginning().getPosition().getDate()) &&
                                                                timeobject.getBeginning().getPosition().getDate().before(instantarg.getEnding().getPosition().getDate()) &&
                                                                timeobject.getEnding().getPosition().getDate().after(instantarg.getEnding().getPosition().getDate())) {
                                                            return RelativePosition.OVERLAPPED_BY;
                                                        } else {
                                                            if (timeobject.getBeginning().getPosition().getDate().after(instantarg.getBeginning().getPosition().getDate()) &&
                                                                    timeobject.getEnding().getPosition().getDate().compareTo(instantarg.getEnding().getPosition().getDate()) == 0) {
                                                                return RelativePosition.ENDS;
                                                            } else {
                                                                if (timeobject.getBeginning().getPosition().getDate().before(instantarg.getBeginning().getPosition().getDate()) &&
                                                                        timeobject.getEnding().getPosition().getDate().compareTo(instantarg.getEnding().getPosition().getDate()) == 0) {
                                                                    return RelativePosition.ENDED_BY;
                                                                } else {
                                                                    return (timeobject.getBeginning().getPosition().getDate().compareTo(instantarg.getEnding().getPosition().getDate()) == 0) ? RelativePosition.MET_BY : RelativePosition.AFTER;
                                                                }
                                                            }
                                                        }
                                                    }
                                                }
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    } else {
                        return null;
                    }
                }
            }
        }
    }

}