java.time.zone.ZoneOffsetTransition类的使用及代码示例
本文整理了Java中java.time.zone.ZoneOffsetTransition类的一些代码示例，展示了ZoneOffsetTransition类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ZoneOffsetTransition类的具体详情如下：
包路径：java.time.zone.ZoneOffsetTransition
类名称：ZoneOffsetTransition
ZoneOffsetTransition介绍
[英]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.
Gaps occur where there are local date-times that simply do not not exist. An example would be when the offset changes from +03:00 to +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 +04:00 to +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.
[中]由当地时间线的不连续性引起的两个偏移之间的过渡。
两个偏移之间的过渡通常是夏令时切换的结果。这种不连续性通常是春季的一个间隙，秋季的一个重叠。ZoneOffsetTransition为两个偏移之间的过渡建模。
当本地日期时间根本不存在时，就会出现间隔。例如，偏移从+03:00更改为+04:00。这可能被描述为“时钟将在今晚凌晨1点向前移动一小时”。
如果存在两次本地日期时间，则会发生重叠。例如，偏移从+04:00更改为+03:00。这可以被描述为“今晚凌晨2点钟会向后拨一小时”。
####实施者规范
这个类是不可变的，是线程安全的。
代码示例
代码示例来源：origin: com.github.seratch/java-time-backport
/**
* Finds the offset info for a local date-time and transition.
*
* @param dt the date-time, not null
* @param trans the transition, not null
* @return the offset info, not null
*/
private Object findOffsetInfo(LocalDateTime dt, ZoneOffsetTransition trans) {
LocalDateTime localTransition = trans.getDateTimeBefore();
if (trans.isGap()) {
if (dt.isBefore(localTransition)) {
return trans.getOffsetBefore();
}
if (dt.isBefore(trans.getDateTimeAfter())) {
return trans;
} else {
return trans.getOffsetAfter();
}
} else {
if (dt.isBefore(localTransition) == false) {
return trans.getOffsetAfter();
}
if (dt.isBefore(trans.getDateTimeAfter())) {
return trans.getOffsetBefore();
} else {
return trans;
}
}
}代码示例来源：origin: com.github.seratch/java-time-backport
this.standardOffsets[0] = baseStandardOffset;
for (int i = 0; i < standardOffsetTransitionList.size(); i++) {
this.standardTransitions[i] = standardOffsetTransitionList.get(i).toEpochSecond();
this.standardOffsets[i + 1] = standardOffsetTransitionList.get(i).getOffsetAfter();
localTransitionOffsetList.add(baseWallOffset);
for (ZoneOffsetTransition trans : transitionList) {
if (trans.isGap()) {
localTransitionList.add(trans.getDateTimeBefore());
localTransitionList.add(trans.getDateTimeAfter());
} else {
localTransitionList.add(trans.getDateTimeAfter());
localTransitionList.add(trans.getDateTimeBefore());
localTransitionOffsetList.add(trans.getOffsetAfter());
this.savingsInstantTransitions[i] = transitionList.get(i).getInstant().getEpochSecond();代码示例来源：origin: com.vaadin/vaadin-server
break;
i = t.getInstant().atZone(zoneId);
if (i.toLocalDate().getYear() != year) {
break;
.ofSeconds(t.getInstant().getEpochSecond())
.toHours();
long duration = Math.max(t.getDuration().toMinutes(), 0);
transitionsList.add(epochHours);
transitionsList.add(duration);代码示例来源：origin: com.github.seratch/java-time-backport
/**
* Gets the valid offsets during this transition.
* <p>
* A gap will return an empty list, while an overlap will return both offsets.
*
* @return the list of valid offsets
*/
List<ZoneOffset> getValidOffsets() {
if (isGap()) {
return Collections.emptyList();
}
return Arrays.asList(getOffsetBefore(), getOffsetAfter());
}代码示例来源：origin: com.github.seratch/java-time-backport
/**
* Does this transition represent a gap in the local time-line.
* <p>
* Gaps occur where there are local date-times that simply do not not exist.
* An example would be when the offset changes from {@code +01:00} to {@code +02:00}.
* This might be described as 'the clocks will move forward one hour tonight at 1am'.
*
* @return true if this transition is a gap, false if it is an overlap
*/
public boolean isGap() {
return getOffsetAfter().getTotalSeconds() > getOffsetBefore().getTotalSeconds();
}代码示例来源：origin: ical4j/ical4j
private static void addTransitions(ZoneId zoneId, VTimeZone result, int rawTimeZoneOffsetInSeconds) throws ParseException {
Map<ZoneOffsetKey, Set<ZoneOffsetTransition>> zoneTransitionsByOffsets = new HashMap<ZoneOffsetKey, Set<ZoneOffsetTransition>>();
for (ZoneOffsetTransition zoneTransitionRule : zoneId.getRules().getTransitions()) {
ZoneOffsetKey offfsetKey = ZoneOffsetKey.of(zoneTransitionRule.getOffsetBefore(), zoneTransitionRule.getOffsetAfter());
Set<ZoneOffsetTransition> transitionRulesForOffset = zoneTransitionsByOffsets.computeIfAbsent(offfsetKey, k -> new HashSet<ZoneOffsetTransition>(1));
transitionRulesForOffset.add(zoneTransitionRule);
}
for (Map.Entry<ZoneOffsetKey, Set<ZoneOffsetTransition>> e : zoneTransitionsByOffsets.entrySet()) {
Observance observance = (e.getKey().offsetAfter.getTotalSeconds() > rawTimeZoneOffsetInSeconds) ? new Daylight() : new Standard();
LocalDateTime start = Collections.min(e.getValue()).getDateTimeBefore();
DtStart dtStart = new DtStart(start.format(DateTimeFormatter.ofPattern(DATE_TIME_TPL)));
TzOffsetFrom offsetFrom = new TzOffsetFrom(e.getKey().offsetBefore);
TzOffsetTo offsetTo = new TzOffsetTo(e.getKey().offsetAfter);
observance.getProperties().add(dtStart);
observance.getProperties().add(offsetFrom);
observance.getProperties().add(offsetTo);
for (ZoneOffsetTransition transition : e.getValue()) {
RDate rDate = new RDate(new ParameterList(), transition.getDateTimeBefore().format(DateTimeFormatter.ofPattern(DATE_TIME_TPL)));
observance.getProperties().add(rDate);
}
result.getObservances().add(observance);
}
}代码示例来源：origin: com.addthis/cronus
/**
* If there is no daylight savings time transition
* the ignore any effects of daylight savings and return
* the local output time.
*
* If there is a daylight savings time overlap transition
* (the clocks are set back) then select the time zone
* offset from before the transition.
*
* If there is a daylight saving time gap transition
* (the clocks are set forward) then we cannot use the local
* output time because it is not a legal time value.
* Move the event to the end of the transition.
*/
private ZonedDateTime outputAdjustDaylightSavings(LocalDateTime output, ZoneId zoneId) {
if (output == null) {
return null;
}
ZoneRules zoneRules = zoneId.getRules();
ZoneOffsetTransition transition = zoneRules.getTransition(output);
if (transition == null) {
return ZonedDateTime.of(output, zoneId);
} else if (transition.isOverlap()) {
return ZonedDateTime.ofInstant(output, transition.getOffsetBefore(), zoneId);
} else {
return ZonedDateTime.ofInstant(transition.getDateTimeAfter(), transition.getOffsetAfter(), zoneId);
}
}代码示例来源：origin: com.github.seratch/java-time-backport
for (TZRule rule : window.ruleList) {
ZoneOffsetTransition trans = rule.toTransition(loopStandardOffset, loopSavings);
if (trans.toEpochSecond() > loopWindowStart.toEpochSecond(loopWindowOffset)) {
new ZoneOffsetTransition(
LocalDateTime.ofEpochSecond(loopWindowStart.toEpochSecond(loopWindowOffset), 0, loopStandardOffset),
loopStandardOffset, window.standardOffset)));
if (loopWindowOffset.equals(effectiveWallOffset) == false) {
ZoneOffsetTransition trans = deduplicate(
new ZoneOffsetTransition(loopWindowStart, loopWindowOffset, effectiveWallOffset));
transitionList.add(trans);
if (trans.toEpochSecond() < loopWindowStart.toEpochSecond(loopWindowOffset) == false &&
trans.toEpochSecond() < window.createDateTimeEpochSecond(loopSavings) &&
trans.getOffsetBefore().equals(trans.getOffsetAfter()) == false) {
transitionList.add(trans);
loopSavings = rule.savingAmountSecs;代码示例来源：origin: com.github.seratch/java-time-backport
@Override
public ZoneOffset getOffset(Instant instant) {
long epochSec = instant.getEpochSecond();
// check if using last rules
if (lastRules.length > 0 &&
epochSec > savingsInstantTransitions[savingsInstantTransitions.length - 1]) {
int year = findYear(epochSec, wallOffsets[wallOffsets.length - 1]);
ZoneOffsetTransition[] transArray = findTransitionArray(year);
ZoneOffsetTransition trans = null;
for (int i = 0; i < transArray.length; i++) {
trans = transArray[i];
if (epochSec < trans.toEpochSecond()) {
return trans.getOffsetBefore();
}
}
return trans.getOffsetAfter();
}
// using historic rules
int index = Arrays.binarySearch(savingsInstantTransitions, epochSec);
if (index < 0) {
// switch negative insert position to start of matched range
index = -index - 2;
}
return wallOffsets[index + 1];
}代码示例来源：origin: net.time4j/time4j-olson
Instant instant = zot.getInstant();
long posixTime = instant.getEpochSecond();
int previousOffset = zot.getOffsetBefore().getTotalSeconds();
int totalOffset = zot.getOffsetAfter().getTotalSeconds();
int dst = Math.toIntExact(zoneRules.getDaylightSavings(instant).getSeconds());
transitions.add(new ZonalTransition(posixTime, previousOffset, totalOffset, dst));代码示例来源：origin: com.github.seratch/java-time-backport
ZoneOffset before = wallOffsets[i];
ZoneOffset after = wallOffsets[i + 1];
ZoneOffsetTransition trans = new ZoneOffsetTransition(savingsInstantTransitions[i], before, after);
if (trans.isGap()) {
localTransitionList.add(trans.getDateTimeBefore());
localTransitionList.add(trans.getDateTimeAfter());
} else {
localTransitionList.add(trans.getDateTimeAfter());
localTransitionList.add(trans.getDateTimeBefore());代码示例来源：origin: com.github.seratch/java-time-backport
} 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)) {代码示例来源：origin: com.github.seratch/java-time-backport
@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<D>(dateTime, earlierOffset, zone);
}
}
return this;
}代码示例来源：origin: com.addthis/cronus
/**
* If we are in the duplicated time period of an overlap transition,
* then move forwards around the duplicated time period.
*/
private ZonedDateTime inputDaylightSavingsNext(ZonedDateTime input) {
ZoneId zoneId = input.getZone();
ZoneRules zoneRules = zoneId.getRules();
ZoneOffset zoneOffset = input.getOffset();
LocalDateTime localDateTime = input.toLocalDateTime();
ZoneOffsetTransition transition = zoneRules.getTransition(localDateTime);
if (transition == null) {
return input;
} else if (zoneOffset.equals(transition.getOffsetAfter())) {
return ZonedDateTime.ofInstant(transition.getDateTimeBefore(),
transition.getOffsetAfter(), zoneId);
} else {
return input;
}
}代码示例来源：origin: infiniteautomation/ma-core-public
/**
* @param zdt
* @return
*/
public Instant getInstant(ZonedDateTime zdt) {
ZonedDateTime offset = zdt.withHour(hour).withMinute(minute).withSecond(second).withNano((int)(millisecond * 1000000l));
LocalDateTime ldt = zdt.toLocalDateTime();
ldt = ldt.withHour(hour).withMinute(minute).withSecond(second).withNano((int)(millisecond * 1000000l));
if(!zdt.getZone().getRules().isValidOffset(ldt, zdt.getOffset())) {
//Within a gap of DST so OR after the transition
ZoneOffsetTransition transition = zdt.getZone().getRules().nextTransition(zdt.toInstant());
if(!ldt.isAfter(transition.getDateTimeAfter())){
//In a gap so we shift our time forward to the end of the gap.
offset = transition.getDateTimeAfter().atZone(zdt.getZone());
}else {
//After a gap so ensure we use the next zone offset
offset = ldt.atOffset(transition.getOffsetAfter()).atZoneSimilarLocal(transition.getOffsetAfter());
}
}
return offset.toInstant();
}
}代码示例来源：origin: com.github.seratch/java-time-backport
@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<D>(dateTime, offset, zone);
}
}
return this;
}代码示例来源：origin: com.github.seratch/java-time-backport
for (ZoneOffsetTransition trans : transArray) {
info = findOffsetInfo(dt, trans);
if (info instanceof ZoneOffsetTransition || info.equals(trans.getOffsetBefore())) {
return info;
if (offsetAfter.getTotalSeconds() > offsetBefore.getTotalSeconds()) {
return new ZoneOffsetTransition(dtBefore, offsetBefore, offsetAfter);
} else {
return new ZoneOffsetTransition(dtAfter, offsetBefore, offsetAfter);代码示例来源：origin: com.github.seratch/java-time-backport
ZoneRules rules = zone.getRules();
ZoneOffsetTransition trans = rules.getTransition(ldt);
if (trans != null && trans.isGap()) {
ldt = trans.getDateTimeAfter();代码示例来源：origin: com.github.seratch/java-time-backport
ZoneOffsetTransition[] transArray = findTransitionArray(year);
for (ZoneOffsetTransition trans : transArray) {
if (epochSec < trans.toEpochSecond()) {
return trans;
index += 1; // exact match, so need to add one to get the next
return new ZoneOffsetTransition(savingsInstantTransitions[index], wallOffsets[index], wallOffsets[index + 1]);代码示例来源：origin: ical4j/ical4j
startDate = zoneOffsetTransition.getDateTimeBefore();
} else {
startDate = LocalDateTime.now(zoneId);内容来源于网络，如有侵权，请联系作者删除！
