Examples of ZoneOffsetTransition

java.time.zone.ZoneOffsetTransition
A transition between two offsets caused by a discontinuity in the local time-line.
A transition between two offsets is normally the result of a daylight savings cutover. The discontinuity is normally a gap in spring and an overlap in autumn. {@code ZoneOffsetTransition} models the transition between the two offsets.
Gaps occur where there are local date-times that simply do not not exist. An example would be when the offset changes from {@code +03:00} to {@code +04:00}. This might be described as 'the clocks will move forward one hour tonight at 1am'.
Overlaps occur where there are local date-times that exist twice. An example would be when the offset changes from {@code +04:00} to {@code +03:00}. This might be described as 'the clocks will move back one hour tonight at 2am'. @implSpec This class is immutable and thread-safe. @since 1.8
javax.time.calendar.zone.ZoneOffsetTransition
A transition between two offsets caused by a discontinuity in the local time-line.
A transition between two offsets is normally the result of a daylight savings cutover. The discontinuity is normally a gap in spring and an overlap in autumn. ZoneOffsetTransition models the transition between the two offsets.
There are two types of transition - a gap and an overlap. Gaps occur where there are local date-times that simply do not not exist. An example would be when the offset changes from +01:00 to +02:00. Overlaps occur where there are local date-times that exist twice. An example would be when the offset changes from +02:00 to +01:00.
ZoneOffsetTransition is immutable and thread-safe. @author Stephen Colebourne
org.threeten.bp.zone.ZoneOffsetTransition
A transition between two offsets caused by a discontinuity in the local time-line.
A transition between two offsets is normally the result of a daylight savings cutover. The discontinuity is normally a gap in spring and an overlap in autumn. {@code ZoneOffsetTransition} models the transition between the two offsets.
Gaps occur where there are local date-times that simply do not not exist. An example would be when the offset changes from {@code +03:00} to {@code +04:00}. This might be described as 'the clocks will move forward one hour tonight at 1am'.
Overlaps occur where there are local date-times that exist twice. An example would be when the offset changes from {@code +04:00} to {@code +03:00}. This might be described as 'the clocks will move back one hour tonight at 2am'.
Specification for implementors
This class is immutable and thread-safe.

Examples of java.time.zone.ZoneOffsetTransition

        List<ZoneOffset> validOffsets = rules.getValidOffsets(localDateTime);
        ZoneOffset offset;
        if (validOffsets.size() == 1) {
            offset = validOffsets.get(0);
        } else if (validOffsets.size() == 0) {
            ZoneOffsetTransition trans = rules.getTransition(localDateTime);
            localDateTime = localDateTime.plusSeconds(trans.getDuration().getSeconds());
            offset = trans.getOffsetAfter();
        } else {
            if (preferredOffset != null && validOffsets.contains(preferredOffset)) {
                offset = preferredOffset;
            } else {
                offset = Objects.requireNonNull(validOffsets.get(0), "offset");  // protect against bad ZoneRules

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Examples of java.time.zone.ZoneOffsetTransition

        Objects.requireNonNull(localDateTime, "localDateTime");
        Objects.requireNonNull(offset, "offset");
        Objects.requireNonNull(zone, "zone");
        ZoneRules rules = zone.getRules();
        if (rules.isValidOffset(localDateTime, offset) == false) {
            ZoneOffsetTransition trans = rules.getTransition(localDateTime);
            if (trans != null && trans.isGap()) {
                // error message says daylight savings for simplicity
                // even though there are other kinds of gaps
                throw new DateTimeException("LocalDateTime '" + localDateTime +
                        "' does not exist in zone '" + zone +
                        "' due to a gap in the local time-line, typically caused by daylight savings");

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Examples of java.time.zone.ZoneOffsetTransition

     *
     * @return a {@code ZonedDateTime} based on this date-time with the earlier offset, not null
     */
    @Override
    public ZonedDateTime withEarlierOffsetAtOverlap() {
        ZoneOffsetTransition trans = getZone().getRules().getTransition(dateTime);
        if (trans != null && trans.isOverlap()) {
            ZoneOffset earlierOffset = trans.getOffsetBefore();
            if (earlierOffset.equals(offset) == false) {
                return new ZonedDateTime(dateTime, earlierOffset, zone);
            }
        }
        return this;

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Examples of java.time.zone.ZoneOffsetTransition

     *
     * @return a {@code ZonedDateTime} based on this date-time with the later offset, not null
     */
    @Override
    public ZonedDateTime withLaterOffsetAtOverlap() {
        ZoneOffsetTransition trans = getZone().getRules().getTransition(toLocalDateTime());
        if (trans != null) {
            ZoneOffset laterOffset = trans.getOffsetAfter();
            if (laterOffset.equals(offset) == false) {
                return new ZonedDateTime(dateTime, laterOffset, zone);
            }
        }
        return this;

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Examples of java.time.zone.ZoneOffsetTransition

        List<ZoneOffset> validOffsets = rules.getValidOffsets(isoLDT);
        ZoneOffset offset;
        if (validOffsets.size() == 1) {
            offset = validOffsets.get(0);
        } else if (validOffsets.size() == 0) {
            ZoneOffsetTransition trans = rules.getTransition(isoLDT);
            localDateTime = localDateTime.plusSeconds(trans.getDuration().getSeconds());
            offset = trans.getOffsetAfter();
        } else {
            if (preferredOffset != null && validOffsets.contains(preferredOffset)) {
                offset = preferredOffset;
            } else {
                offset = validOffsets.get(0);

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Examples of java.time.zone.ZoneOffsetTransition

        return offset;
    }


    @Override
    public ChronoZonedDateTime<D> withEarlierOffsetAtOverlap() {
        ZoneOffsetTransition trans = getZone().getRules().getTransition(LocalDateTime.from(this));
        if (trans != null && trans.isOverlap()) {
            ZoneOffset earlierOffset = trans.getOffsetBefore();
            if (earlierOffset.equals(offset) == false) {
                return new ChronoZonedDateTimeImpl<>(dateTime, earlierOffset, zone);
            }
        }
        return this;

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Examples of java.time.zone.ZoneOffsetTransition

        return this;
    }


    @Override
    public ChronoZonedDateTime<D> withLaterOffsetAtOverlap() {
        ZoneOffsetTransition trans = getZone().getRules().getTransition(LocalDateTime.from(this));
        if (trans != null) {
            ZoneOffset offset = trans.getOffsetAfter();
            if (offset.equals(getOffset()) == false) {
                return new ChronoZonedDateTimeImpl<>(dateTime, offset, zone);
            }
        }
        return this;

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Examples of javax.time.calendar.zone.ZoneOffsetTransition

        
        OffsetInfo info = rules.getOffsetInfo(newDateTime);
        if (info.isTransition() == false) {
            return OffsetDateTime.from(newDateTime, info.getOffset());
        }
        ZoneOffsetTransition discontinuity = info.getTransition();
        OffsetDateTime result = discontinuity.isGap() ?
            handleGap(zone, rules, discontinuity, newDateTime, oldDateTime != null ? oldDateTime.toOffsetDateTime() : null) :
            handleOverlap(zone, rules, discontinuity, newDateTime, oldDateTime != null ? oldDateTime.toOffsetDateTime() : null);
        
        // validate the result
        if (result == null) {

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Examples of org.threeten.bp.zone.ZoneOffsetTransition

    }


    public void test_London_getOffsetInfo_gap() {
        ZoneId test = ZoneId.of("Europe/London");
        final LocalDateTime dateTime = LocalDateTime.of(2008, 3, 30, 1, 0, 0, 0);
        ZoneOffsetTransition trans = checkOffset(test.getRules(), dateTime, ZoneOffset.ofHours(0), GAP);
        assertEquals(trans.isGap(), true);
        assertEquals(trans.isOverlap(), false);
        assertEquals(trans.getOffsetBefore(), ZoneOffset.ofHours(0));
        assertEquals(trans.getOffsetAfter(), ZoneOffset.ofHours(1));
        assertEquals(trans.getInstant(), dateTime.toInstant(ZoneOffset.UTC));
        assertEquals(trans.getDateTimeBefore(), LocalDateTime.of(2008, 3, 30, 1, 0));
        assertEquals(trans.getDateTimeAfter(), LocalDateTime.of(2008, 3, 30, 2, 0));
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(-1)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(0)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(1)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(2)), false);
        assertEquals(trans.toString(), "Transition[Gap at 2008-03-30T01:00Z to +01:00]");


        assertFalse(trans.equals(null));
        assertFalse(trans.equals(ZoneOffset.ofHours(0)));
        assertTrue(trans.equals(trans));


        final ZoneOffsetTransition otherTrans = test.getRules().getTransition(dateTime);
        assertTrue(trans.equals(otherTrans));
        assertEquals(trans.hashCode(), otherTrans.hashCode());
    }

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Examples of org.threeten.bp.zone.ZoneOffsetTransition

    }


    public void test_London_getOffsetInfo_overlap() {
        ZoneId test = ZoneId.of("Europe/London");
        final LocalDateTime dateTime = LocalDateTime.of(2008, 10, 26, 1, 0, 0, 0);
        ZoneOffsetTransition trans = checkOffset(test.getRules(), dateTime, ZoneOffset.ofHours(1), OVERLAP);
        assertEquals(trans.isGap(), false);
        assertEquals(trans.isOverlap(), true);
        assertEquals(trans.getOffsetBefore(), ZoneOffset.ofHours(1));
        assertEquals(trans.getOffsetAfter(), ZoneOffset.ofHours(0));
        assertEquals(trans.getInstant(), dateTime.toInstant(ZoneOffset.UTC));
        assertEquals(trans.getDateTimeBefore(), LocalDateTime.of(2008, 10, 26, 2, 0));
        assertEquals(trans.getDateTimeAfter(), LocalDateTime.of(2008, 10, 26, 1, 0));
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(-1)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(0)), true);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(1)), true);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(2)), false);
        assertEquals(trans.toString(), "Transition[Overlap at 2008-10-26T02:00+01:00 to Z]");


        assertFalse(trans.equals(null));
        assertFalse(trans.equals(ZoneOffset.ofHours(1)));
        assertTrue(trans.equals(trans));


        final ZoneOffsetTransition otherTrans = test.getRules().getTransition(dateTime);
        assertTrue(trans.equals(otherTrans));
        assertEquals(trans.hashCode(), otherTrans.hashCode());
    }

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Examples of ZoneOffsetTransition

Specification for implementors

Examples of java.time.zone.ZoneOffsetTransition

Examples of java.time.zone.ZoneOffsetTransition

Examples of java.time.zone.ZoneOffsetTransition

Examples of java.time.zone.ZoneOffsetTransition

Examples of java.time.zone.ZoneOffsetTransition

Examples of java.time.zone.ZoneOffsetTransition

Examples of java.time.zone.ZoneOffsetTransition

Examples of javax.time.calendar.zone.ZoneOffsetTransition

Examples of org.threeten.bp.zone.ZoneOffsetTransition

Examples of org.threeten.bp.zone.ZoneOffsetTransition