Examples of org.threeten.bp.zone.ZoneOffsetTransition

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.

    }


    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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    }


    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());
    }

View Full Code Here

    }


    public void test_Paris_getOffsetInfo_gap() {
        ZoneId test = ZoneId.of("Europe/Paris");
        final LocalDateTime dateTime = LocalDateTime.of(2008, 3, 30, 2, 0, 0, 0);
        ZoneOffsetTransition trans = checkOffset(test.getRules(), dateTime, ZoneOffset.ofHours(1), GAP);
        assertEquals(trans.isGap(), true);
        assertEquals(trans.isOverlap(), false);
        assertEquals(trans.getOffsetBefore(), ZoneOffset.ofHours(1));
        assertEquals(trans.getOffsetAfter(), ZoneOffset.ofHours(2));
        assertEquals(trans.getInstant(), createInstant(2008, 3, 30, 1, 0, 0, 0, ZoneOffset.UTC));
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(0)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(1)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(2)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(3)), false);
        assertEquals(trans.toString(), "Transition[Gap at 2008-03-30T02:00+01:00 to +02:00]");


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


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

View Full Code Here

    }


    public void test_Paris_getOffsetInfo_overlap() {
        ZoneId test = ZoneId.of("Europe/Paris");
        final LocalDateTime dateTime = LocalDateTime.of(2008, 10, 26, 2, 0, 0, 0);
        ZoneOffsetTransition trans = checkOffset(test.getRules(), dateTime, ZoneOffset.ofHours(2), OVERLAP);
        assertEquals(trans.isGap(), false);
        assertEquals(trans.isOverlap(), true);
        assertEquals(trans.getOffsetBefore(), ZoneOffset.ofHours(2));
        assertEquals(trans.getOffsetAfter(), ZoneOffset.ofHours(1));
        assertEquals(trans.getInstant(), createInstant(2008, 10, 26, 1, 0, 0, 0, ZoneOffset.UTC));
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(0)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(1)), true);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(2)), true);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(3)), false);
        assertEquals(trans.toString(), "Transition[Overlap at 2008-10-26T03:00+02:00 to +01:00]");


        assertFalse(trans.equals(null));
        assertFalse(trans.equals(ZoneOffset.ofHours(2)));
        assertTrue(trans.equals(trans));


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

View Full Code Here

        // need to handle case where there is a gap from 11:30 to 00:30
        // standard ZDT factory would result in 01:00 rather than 00:30
        LocalDateTime ldt = atTime(LocalTime.MIDNIGHT);
        if (zone instanceof ZoneOffset == false) {
            ZoneRules rules = zone.getRules();
            ZoneOffsetTransition trans = rules.getTransition(ldt);
            if (trans != null && trans.isGap()) {
                ldt = trans.getDateTimeAfter();
            }
        }
        return ZonedDateTime.of(ldt, zone);
    }

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    }


    public void test_NewYork_getOffsetInfo_gap() {
        ZoneId test = ZoneId.of("America/New_York");
        final LocalDateTime dateTime = LocalDateTime.of(2008, 3, 9, 2, 0, 0, 0);
        ZoneOffsetTransition trans = checkOffset(test.getRules(), dateTime, ZoneOffset.ofHours(-5), GAP);
        assertEquals(trans.getOffsetBefore(), ZoneOffset.ofHours(-5));
        assertEquals(trans.getOffsetAfter(), ZoneOffset.ofHours(-4));
        assertEquals(trans.getInstant(), createInstant(2008, 3, 9, 2, 0, 0, 0, ZoneOffset.ofHours(-5)));
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(-6)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(-5)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(-4)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(-3)), false);
        assertEquals(trans.toString(), "Transition[Gap at 2008-03-09T02:00-05:00 to -04:00]");


        assertFalse(trans.equals(null));
        assertFalse(trans.equals(ZoneOffset.ofHours(-5)));
        assertTrue(trans.equals(trans));


        final ZoneOffsetTransition otherTrans = test.getRules().getTransition(dateTime);
        assertTrue(trans.equals(otherTrans));


        assertEquals(trans.hashCode(), otherTrans.hashCode());
    }

View Full Code Here

    }


    public void test_NewYork_getOffsetInfo_overlap() {
        ZoneId test = ZoneId.of("America/New_York");
        final LocalDateTime dateTime = LocalDateTime.of(2008, 11, 2, 1, 0, 0, 0);
        ZoneOffsetTransition trans = checkOffset(test.getRules(), dateTime, ZoneOffset.ofHours(-4), OVERLAP);
        assertEquals(trans.getOffsetBefore(), ZoneOffset.ofHours(-4));
        assertEquals(trans.getOffsetAfter(), ZoneOffset.ofHours(-5));
        assertEquals(trans.getInstant(), createInstant(2008, 11, 2, 2, 0, 0, 0, ZoneOffset.ofHours(-4)));
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(-1)), false);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(-5)), true);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(-4)), true);
        assertEquals(trans.isValidOffset(ZoneOffset.ofHours(2)), false);
        assertEquals(trans.toString(), "Transition[Overlap at 2008-11-02T02:00-04:00 to -05:00]");


        assertFalse(trans.equals(null));
        assertFalse(trans.equals(ZoneOffset.ofHours(-4)));
        assertTrue(trans.equals(trans));


        final ZoneOffsetTransition otherTrans = test.getRules().getTransition(dateTime);
        assertTrue(trans.equals(otherTrans));


        assertEquals(trans.hashCode(), otherTrans.hashCode());
    }

View Full Code Here

        assertEquals(rules.getOffset(dateTime), offset);
        if (type == 1) {
            assertEquals(validOffsets.get(0), offset);
            return null;
        } else {
            ZoneOffsetTransition zot = rules.getTransition(dateTime);
            assertNotNull(zot);
            assertEquals(zot.isOverlap(), type == 2);
            assertEquals(zot.isGap(), type == 0);
            assertEquals(zot.isValidOffset(offset), type == 2);
            return zot;
        }
    }

View Full Code Here

        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 = Jdk8Methods.requireNonNull(validOffsets.get(0), "offset");  // protect against bad ZoneRules

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        Jdk8Methods.requireNonNull(localDateTime, "localDateTime");
        Jdk8Methods.requireNonNull(offset, "offset");
        Jdk8Methods.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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Related Classes of org.threeten.bp.zone.ZoneOffsetTransition

org.threeten.bp.chrono.ChronoZonedDateTimeImpl

org.threeten.bp.LocalDate

org.threeten.bp.TestZoneId

org.threeten.bp.ZonedDateTime

org.threeten.bp.ZoneOffset

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Examples of org.threeten.bp.zone.ZoneOffsetTransition

Specification for implementors

Related Classes of org.threeten.bp.zone.ZoneOffsetTransition