Class ApproximateNormalizer

base/src/main/java/net/time4j/Duration.java:5038–5195

    }

    private static class ApproximateNormalizer
        implements Normalizer<IsoUnit> {

        //~ Instanzvariablen ----------------------------------------------

        private final boolean daysToWeeks;
        private final int steps;
        private final ClockUnit unit;

        //~ Konstruktoren -------------------------------------------------

        ApproximateNormalizer(boolean daysToWeeks) {
            super();

            this.daysToWeeks = daysToWeeks;
            this.steps = 1;
            this.unit = null;

        }

        ApproximateNormalizer(
            int steps,
            ClockUnit unit
        ) {
            super();

            if (steps < 1) {
                throw new IllegalArgumentException(
                    "Step width is not positive: " + steps);
            } else if (unit.compareTo(SECONDS) > 0) {
                throw new IllegalArgumentException("Unsupported unit.");
            }

            this.daysToWeeks = false;
            this.steps = steps;
            this.unit = unit;

        }

        //~ Methoden ------------------------------------------------------

        @Override
        public Duration<IsoUnit> normalize(TimeSpan<? extends IsoUnit> dur) {

            double total = 0.0;
            boolean empty = true;

            for (int i = 0, n = dur.getTotalLength().size(); i < n; i++) {
                Item<? extends IsoUnit> item = dur.getTotalLength().get(i);
                total += (item.getAmount() * item.getUnit().getLength());
                if (item.getAmount() > 0) {
                    empty = false;
                }
            }

            if (empty) {
                return Duration.ofZero();
            }