Java Code Examples for java.time.zone.ZoneRules#getTransition()

The following examples show how to use java.time.zone.ZoneRules#getTransition() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: TCKZoneRules.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
public void test_Paris_getOffsetInfo_gap() {
    ZoneRules test = europeParis();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 3, 30, 2, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_PONE, GAP);
    assertEquals(trans.isGap(), true);
    assertEquals(trans.isOverlap(), false);
    assertEquals(trans.getOffsetBefore(), OFFSET_PONE);
    assertEquals(trans.getOffsetAfter(), OFFSET_PTWO);
    assertEquals(trans.getInstant(), createInstant(2008, 3, 30, 1, 0, ZoneOffset.UTC));
    assertEquals(trans.isValidOffset(OFFSET_ZERO), false);
    assertEquals(trans.isValidOffset(OFFSET_PONE), false);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), false);
    assertEquals(trans.toString(), "Transition[Gap at 2008-03-30T02:00+01:00 to +02:00]");

    assertFalse(trans.equals(null));
    assertFalse(trans.equals(OFFSET_PONE));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 2
Source File: TCKZoneRules.java    From jdk8u-dev-jdk with GNU General Public License v2.0 6 votes vote down vote up 
public void test_Paris_getOffsetInfo_gap() {
    ZoneRules test = europeParis();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 3, 30, 2, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_PONE, GAP);
    assertEquals(trans.isGap(), true);
    assertEquals(trans.isOverlap(), false);
    assertEquals(trans.getOffsetBefore(), OFFSET_PONE);
    assertEquals(trans.getOffsetAfter(), OFFSET_PTWO);
    assertEquals(trans.getInstant(), createInstant(2008, 3, 30, 1, 0, ZoneOffset.UTC));
    assertEquals(trans.isValidOffset(OFFSET_ZERO), false);
    assertEquals(trans.isValidOffset(OFFSET_PONE), false);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), false);
    assertEquals(trans.toString(), "Transition[Gap at 2008-03-30T02:00+01:00 to +02:00]");

    assertFalse(trans.equals(null));
    assertFalse(trans.equals(OFFSET_PONE));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 3
Source File: TCKZoneRules.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
public void test_NewYork_getOffsetInfo_overlap() {
    ZoneRules test = americaNewYork();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 11, 2, 1, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, ZoneOffset.ofHours(-4), OVERLAP);
    assertEquals(trans.isGap(), false);
    assertEquals(trans.isOverlap(), true);
    assertEquals(trans.getOffsetBefore(), ZoneOffset.ofHours(-4));
    assertEquals(trans.getOffsetAfter(), ZoneOffset.ofHours(-5));
    assertEquals(trans.getInstant(), createInstant(2008, 11, 2, 2, 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(OFFSET_PTWO), 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.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 4
Source File: TCKZoneRules.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up 
public void test_Paris_getOffsetInfo_overlap() {
    ZoneRules test = europeParis();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 10, 26, 2, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_PTWO, OVERLAP);
    assertEquals(trans.isGap(), false);
    assertEquals(trans.isOverlap(), true);
    assertEquals(trans.getOffsetBefore(), OFFSET_PTWO);
    assertEquals(trans.getOffsetAfter(), OFFSET_PONE);
    assertEquals(trans.getInstant(), createInstant(2008, 10, 26, 1, 0, ZoneOffset.UTC));
    assertEquals(trans.isValidOffset(OFFSET_ZERO), false);
    assertEquals(trans.isValidOffset(OFFSET_PONE), true);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), 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(OFFSET_PTWO));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 5
Source File: TCKZoneRules.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
public void test_London_getOffsetInfo_overlap() {
    ZoneRules test = europeLondon();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 10, 26, 1, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_PONE, OVERLAP);
    assertEquals(trans.isGap(), false);
    assertEquals(trans.isOverlap(), true);
    assertEquals(trans.getOffsetBefore(), OFFSET_PONE);
    assertEquals(trans.getOffsetAfter(), OFFSET_ZERO);
    assertEquals(trans.getInstant(), createInstant(2008, 10, 26, 1, 0, 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(OFFSET_ZERO), true);
    assertEquals(trans.isValidOffset(OFFSET_PONE), true);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), false);
    assertEquals(trans.toString(), "Transition[Overlap at 2008-10-26T02:00+01:00 to Z]");

    assertFalse(trans.equals(null));
    assertFalse(trans.equals(OFFSET_PONE));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 6
Source File: TCKZoneRules.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
public void test_Paris_getOffsetInfo_gap() {
    ZoneRules test = europeParis();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 3, 30, 2, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_PONE, GAP);
    assertEquals(trans.isGap(), true);
    assertEquals(trans.isOverlap(), false);
    assertEquals(trans.getOffsetBefore(), OFFSET_PONE);
    assertEquals(trans.getOffsetAfter(), OFFSET_PTWO);
    assertEquals(trans.getInstant(), createInstant(2008, 3, 30, 1, 0, ZoneOffset.UTC));
    assertEquals(trans.isValidOffset(OFFSET_ZERO), false);
    assertEquals(trans.isValidOffset(OFFSET_PONE), false);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), false);
    assertEquals(trans.toString(), "Transition[Gap at 2008-03-30T02:00+01:00 to +02:00]");

    assertFalse(trans.equals(null));
    assertFalse(trans.equals(OFFSET_PONE));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 7
Source File: TCKZoneRules.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
public void test_London_getOffsetInfo_overlap() {
    ZoneRules test = europeLondon();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 10, 26, 1, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_PONE, OVERLAP);
    assertEquals(trans.isGap(), false);
    assertEquals(trans.isOverlap(), true);
    assertEquals(trans.getOffsetBefore(), OFFSET_PONE);
    assertEquals(trans.getOffsetAfter(), OFFSET_ZERO);
    assertEquals(trans.getInstant(), createInstant(2008, 10, 26, 1, 0, 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(OFFSET_ZERO), true);
    assertEquals(trans.isValidOffset(OFFSET_PONE), true);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), false);
    assertEquals(trans.toString(), "Transition[Overlap at 2008-10-26T02:00+01:00 to Z]");

    assertFalse(trans.equals(null));
    assertFalse(trans.equals(OFFSET_PONE));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 8
Source File: TCKZoneRules.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
public void test_Paris_getOffsetInfo_gap() {
    ZoneRules test = europeParis();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 3, 30, 2, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_PONE, GAP);
    assertEquals(trans.isGap(), true);
    assertEquals(trans.isOverlap(), false);
    assertEquals(trans.getOffsetBefore(), OFFSET_PONE);
    assertEquals(trans.getOffsetAfter(), OFFSET_PTWO);
    assertEquals(trans.getInstant(), createInstant(2008, 3, 30, 1, 0, ZoneOffset.UTC));
    assertEquals(trans.isValidOffset(OFFSET_ZERO), false);
    assertEquals(trans.isValidOffset(OFFSET_PONE), false);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), false);
    assertEquals(trans.toString(), "Transition[Gap at 2008-03-30T02:00+01:00 to +02:00]");

    assertFalse(trans.equals(null));
    assertFalse(trans.equals(OFFSET_PONE));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 9
Source File: TCKZoneRules.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
public void test_Paris_getOffsetInfo_overlap() {
    ZoneRules test = europeParis();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 10, 26, 2, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_PTWO, OVERLAP);
    assertEquals(trans.isGap(), false);
    assertEquals(trans.isOverlap(), true);
    assertEquals(trans.getOffsetBefore(), OFFSET_PTWO);
    assertEquals(trans.getOffsetAfter(), OFFSET_PONE);
    assertEquals(trans.getInstant(), createInstant(2008, 10, 26, 1, 0, ZoneOffset.UTC));
    assertEquals(trans.isValidOffset(OFFSET_ZERO), false);
    assertEquals(trans.isValidOffset(OFFSET_PONE), true);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), 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(OFFSET_PTWO));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 10
Source File: TCKZoneRules.java    From dragonwell8_jdk with GNU General Public License v2.0 6 votes vote down vote up 
public void test_London_getOffsetInfo_gap() {
    ZoneRules test = europeLondon();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 3, 30, 1, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_ZERO, GAP);
    assertEquals(trans.isGap(), true);
    assertEquals(trans.isOverlap(), false);
    assertEquals(trans.getOffsetBefore(), OFFSET_ZERO);
    assertEquals(trans.getOffsetAfter(), OFFSET_PONE);
    assertEquals(trans.getInstant(), createInstant(2008, 3, 30, 1, 0, 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(OFFSET_ZERO), false);
    assertEquals(trans.isValidOffset(OFFSET_PONE), false);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), false);
    assertEquals(trans.toString(), "Transition[Gap at 2008-03-30T01:00Z to +01:00]");

    assertFalse(trans.equals(null));
    assertFalse(trans.equals(OFFSET_ZERO));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 11
Source File: TCKZoneRules.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
public void test_Paris_getOffsetInfo_overlap() {
    ZoneRules test = europeParis();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 10, 26, 2, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_PTWO, OVERLAP);
    assertEquals(trans.isGap(), false);
    assertEquals(trans.isOverlap(), true);
    assertEquals(trans.getOffsetBefore(), OFFSET_PTWO);
    assertEquals(trans.getOffsetAfter(), OFFSET_PONE);
    assertEquals(trans.getInstant(), createInstant(2008, 10, 26, 1, 0, ZoneOffset.UTC));
    assertEquals(trans.isValidOffset(OFFSET_ZERO), false);
    assertEquals(trans.isValidOffset(OFFSET_PONE), true);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), 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(OFFSET_PTWO));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 12
Source File: ZonedDateTime.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Obtains an instance of {@code ZonedDateTime} strictly validating the
 * combination of local date-time, offset and zone ID.
 * <p>
 * This creates a zoned date-time ensuring that the offset is valid for the
 * local date-time according to the rules of the specified zone.
 * If the offset is invalid, an exception is thrown.
 *
 * @param localDateTime  the local date-time, not null
 * @param offset  the zone offset, not null
 * @param zone  the time-zone, not null
 * @return the zoned date-time, not null
 */
public static ZonedDateTime ofStrict(LocalDateTime localDateTime, ZoneOffset offset, ZoneId zone) {
    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");
        }
        throw new DateTimeException("ZoneOffset '" + offset + "' is not valid for LocalDateTime '" +
                localDateTime + "' in zone '" + zone + "'");
    }
    return new ZonedDateTime(localDateTime, offset, zone);
}
Example 13
Source File: TCKZoneRules.java    From jdk8u-dev-jdk with GNU General Public License v2.0 6 votes vote down vote up 
public void test_London_getOffsetInfo_gap() {
    ZoneRules test = europeLondon();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 3, 30, 1, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_ZERO, GAP);
    assertEquals(trans.isGap(), true);
    assertEquals(trans.isOverlap(), false);
    assertEquals(trans.getOffsetBefore(), OFFSET_ZERO);
    assertEquals(trans.getOffsetAfter(), OFFSET_PONE);
    assertEquals(trans.getInstant(), createInstant(2008, 3, 30, 1, 0, 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(OFFSET_ZERO), false);
    assertEquals(trans.isValidOffset(OFFSET_PONE), false);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), false);
    assertEquals(trans.toString(), "Transition[Gap at 2008-03-30T01:00Z to +01:00]");

    assertFalse(trans.equals(null));
    assertFalse(trans.equals(OFFSET_ZERO));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 14
Source File: TCKZoneRules.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
public void test_Paris_getOffsetInfo_overlap() {
    ZoneRules test = europeParis();
    final LocalDateTime dateTime = LocalDateTime.of(2008, 10, 26, 2, 0, 0, 0);
    ZoneOffsetTransition trans = checkOffset(test, dateTime, OFFSET_PTWO, OVERLAP);
    assertEquals(trans.isGap(), false);
    assertEquals(trans.isOverlap(), true);
    assertEquals(trans.getOffsetBefore(), OFFSET_PTWO);
    assertEquals(trans.getOffsetAfter(), OFFSET_PONE);
    assertEquals(trans.getInstant(), createInstant(2008, 10, 26, 1, 0, ZoneOffset.UTC));
    assertEquals(trans.isValidOffset(OFFSET_ZERO), false);
    assertEquals(trans.isValidOffset(OFFSET_PONE), true);
    assertEquals(trans.isValidOffset(OFFSET_PTWO), 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(OFFSET_PTWO));
    assertTrue(trans.equals(trans));

    final ZoneOffsetTransition otherTrans = test.getTransition(dateTime);
    assertTrue(trans.equals(otherTrans));
    assertEquals(trans.hashCode(), otherTrans.hashCode());
}
Example 15
Source File: ZonedDateTime.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Obtains an instance of {@code ZonedDateTime} strictly validating the
 * combination of local date-time, offset and zone ID.
 * <p>
 * This creates a zoned date-time ensuring that the offset is valid for the
 * local date-time according to the rules of the specified zone.
 * If the offset is invalid, an exception is thrown.
 *
 * @param localDateTime  the local date-time, not null
 * @param offset  the zone offset, not null
 * @param zone  the time-zone, not null
 * @return the zoned date-time, not null
 */
public static ZonedDateTime ofStrict(LocalDateTime localDateTime, ZoneOffset offset, ZoneId zone) {
    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");
        }
        throw new DateTimeException("ZoneOffset '" + offset + "' is not valid for LocalDateTime '" +
                localDateTime + "' in zone '" + zone + "'");
    }
    return new ZonedDateTime(localDateTime, offset, zone);
}
Example 16
Source File: ZonedDateTime.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Obtains an instance of {@code ZonedDateTime} from a local date-time
 * using the preferred offset if possible.
 * <p>
 * The local date-time is resolved to a single instant on the time-line.
 * This is achieved by finding a valid offset from UTC/Greenwich for the local
 * date-time as defined by the {@link ZoneRules rules} of the zone ID.
 *<p>
 * In most cases, there is only one valid offset for a local date-time.
 * In the case of an overlap, where clocks are set back, there are two valid offsets.
 * If the preferred offset is one of the valid offsets then it is used.
 * Otherwise the earlier valid offset is used, typically corresponding to "summer".
 * <p>
 * In the case of a gap, where clocks jump forward, there is no valid offset.
 * Instead, the local date-time is adjusted to be later by the length of the gap.
 * For a typical one hour daylight savings change, the local date-time will be
 * moved one hour later into the offset typically corresponding to "summer".
 *
 * @param localDateTime  the local date-time, not null
 * @param zone  the time-zone, not null
 * @param preferredOffset  the zone offset, null if no preference
 * @return the zoned date-time, not null
 */
public static ZonedDateTime ofLocal(LocalDateTime localDateTime, ZoneId zone, ZoneOffset preferredOffset) {
    Objects.requireNonNull(localDateTime, "localDateTime");
    Objects.requireNonNull(zone, "zone");
    if (zone instanceof ZoneOffset) {
        return new ZonedDateTime(localDateTime, (ZoneOffset) zone, zone);
    }
    ZoneRules rules = zone.getRules();
    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
        }
    }
    return new ZonedDateTime(localDateTime, offset, zone);
}
Example 17
Source File: ChronoZonedDateTimeImpl.java    From dragonwell8_jdk with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Obtains an instance from a local date-time using the preferred offset if possible.
 *
 * @param localDateTime  the local date-time, not null
 * @param zone  the zone identifier, not null
 * @param preferredOffset  the zone offset, null if no preference
 * @return the zoned date-time, not null
 */
static <R extends ChronoLocalDate> ChronoZonedDateTime<R> ofBest(
        ChronoLocalDateTimeImpl<R> localDateTime, ZoneId zone, ZoneOffset preferredOffset) {
    Objects.requireNonNull(localDateTime, "localDateTime");
    Objects.requireNonNull(zone, "zone");
    if (zone instanceof ZoneOffset) {
        return new ChronoZonedDateTimeImpl<>(localDateTime, (ZoneOffset) zone, zone);
    }
    ZoneRules rules = zone.getRules();
    LocalDateTime isoLDT = LocalDateTime.from(localDateTime);
    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);
        }
    }
    Objects.requireNonNull(offset, "offset");  // protect against bad ZoneRules
    return new ChronoZonedDateTimeImpl<>(localDateTime, offset, zone);
}
Example 18
Source File: ChronoZonedDateTimeImpl.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Obtains an instance from a local date-time using the preferred offset if possible.
 *
 * @param localDateTime  the local date-time, not null
 * @param zone  the zone identifier, not null
 * @param preferredOffset  the zone offset, null if no preference
 * @return the zoned date-time, not null
 */
static <R extends ChronoLocalDate> ChronoZonedDateTime<R> ofBest(
        ChronoLocalDateTimeImpl<R> localDateTime, ZoneId zone, ZoneOffset preferredOffset) {
    Objects.requireNonNull(localDateTime, "localDateTime");
    Objects.requireNonNull(zone, "zone");
    if (zone instanceof ZoneOffset) {
        return new ChronoZonedDateTimeImpl<>(localDateTime, (ZoneOffset) zone, zone);
    }
    ZoneRules rules = zone.getRules();
    LocalDateTime isoLDT = LocalDateTime.from(localDateTime);
    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);
        }
    }
    Objects.requireNonNull(offset, "offset");  // protect against bad ZoneRules
    return new ChronoZonedDateTimeImpl<>(localDateTime, offset, zone);
}
Example 19
Source File: LocalDate.java    From Bytecoder with Apache License 2.0 3 votes vote down vote up 
/**
 * Returns a zoned date-time from this date at the earliest valid time according
 * to the rules in the time-zone.
 * <p>
 * Time-zone rules, such as daylight savings, mean that not every local date-time
 * is valid for the specified zone, thus the local date-time may not be midnight.
 * <p>
 * In most cases, there is only one valid offset for a local date-time.
 * In the case of an overlap, there are two valid offsets, and the earlier one is used,
 * corresponding to the first occurrence of midnight on the date.
 * In the case of a gap, the zoned date-time will represent the instant just after the gap.
 * <p>
 * If the zone ID is a {@link ZoneOffset}, then the result always has a time of midnight.
 * <p>
 * To convert to a specific time in a given time-zone call {@link #atTime(LocalTime)}
 * followed by {@link LocalDateTime#atZone(ZoneId)}.
 *
 * @param zone  the zone ID to use, not null
 * @return the zoned date-time formed from this date and the earliest valid time for the zone, not null
 */
public ZonedDateTime atStartOfDay(ZoneId zone) {
    Objects.requireNonNull(zone, "zone");
    // 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);
}
Example 20
Source File: LocalDate.java    From j2objc with Apache License 2.0 3 votes vote down vote up 
/**
 * Returns a zoned date-time from this date at the earliest valid time according
 * to the rules in the time-zone.
 * <p>
 * Time-zone rules, such as daylight savings, mean that not every local date-time
 * is valid for the specified zone, thus the local date-time may not be midnight.
 * <p>
 * In most cases, there is only one valid offset for a local date-time.
 * In the case of an overlap, there are two valid offsets, and the earlier one is used,
 * corresponding to the first occurrence of midnight on the date.
 * In the case of a gap, the zoned date-time will represent the instant just after the gap.
 * <p>
 * If the zone ID is a {@link ZoneOffset}, then the result always has a time of midnight.
 * <p>
 * To convert to a specific time in a given time-zone call {@link #atTime(LocalTime)}
 * followed by {@link LocalDateTime#atZone(ZoneId)}.
 *
 * @param zone  the zone ID to use, not null
 * @return the zoned date-time formed from this date and the earliest valid time for the zone, not null
 */
public ZonedDateTime atStartOfDay(ZoneId zone) {
    Objects.requireNonNull(zone, "zone");
    // 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);
}