Example usage for org.joda.time DateTimeZone previousTransition

Introduction

In this page you can find the example usage for org.joda.time DateTimeZone previousTransition.

Prototype

public abstract long previousTransition(long instant);

Source Link

Document

Retreats the given instant to where the time zone offset or name changes.

Usage

From source file:com.funambol.common.pim.converter.TimeZoneHelper.java

License:Open Source License

protected long fixFrom(DateTimeZone tz, int standardOffset, long from) {

    if (standardOffset != tz.getOffset(from)) { // NB: this must NOT be
        // a call to getBasicOffset(), because that method may be
        // overriden by the cached implementation(s) of this class.
        do {//from   ww  w .  j  a  v  a  2 s.co  m
            from = tz.previousTransition(from) + 1;
        } while ((from != 0) && (standardOffset == tz.getOffset(from)));
    } else {
        from = tz.nextTransition(from);
    }
    return from;
}

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From source file:divconq.util.TimeUtil.java

License:Open Source License

/**
 * get the DST end transition for a given year
 * //from  w  w  w. j av  a  2s  .co  m
 * @param zone timezone to use for DST rules
 * @param year the year to use, e.g. 2012
 * @return datetime of the end transition
 */
public static DateTime endDST(DateTimeZone zone, int year) {
    return new DateTime(zone.previousTransition(new DateTime(year + 1, 1, 1, 0, 0, 0, 0, zone).getMillis()));
}

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From source file:divconq.util.TimeUtil.java

License:Open Source License

/**
 * get the DST end transition for a given year
 * //from  w  ww  .j a  v a 2 s .  co m
 * @param year the year to use, e.g. 2012
 * @return datetime of the end transition
 */
public static DateTime endDST(int year) {
    DateTimeZone zone = DateTimeZone.getDefault();
    return new DateTime(zone.previousTransition(new DateTime(year + 1, 1, 1, 0, 0, 0, 0, zone).getMillis()));
}

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From source file:net.danlew.android.joda.ZoneInfoCompiler.java

License:Apache License

/**
 * @return false if error./*from   w  ww.  j  a va  2 s . c  om*/
 */
static boolean test(String id, DateTimeZone tz) {
    if (!id.equals(tz.getID())) {
        return true;
    }

    // Test to ensure that reported transitions are not duplicated.

    long millis = ISOChronology.getInstanceUTC().year().set(0, 1850);
    long end = ISOChronology.getInstanceUTC().year().set(0, 2050);

    int offset = tz.getOffset(millis);
    String key = tz.getNameKey(millis);

    List<Long> transitions = new ArrayList<Long>();

    while (true) {
        long next = tz.nextTransition(millis);
        if (next == millis || next > end) {
            break;
        }

        millis = next;

        int nextOffset = tz.getOffset(millis);
        String nextKey = tz.getNameKey(millis);

        if (offset == nextOffset && key.equals(nextKey)) {
            System.out.println(
                    "*d* Error in " + tz.getID() + " " + new DateTime(millis, ISOChronology.getInstanceUTC()));
            return false;
        }

        if (nextKey == null || (nextKey.length() < 3 && !"??".equals(nextKey))) {
            System.out.println("*s* Error in " + tz.getID() + " "
                    + new DateTime(millis, ISOChronology.getInstanceUTC()) + ", nameKey=" + nextKey);
            return false;
        }

        transitions.add(Long.valueOf(millis));

        offset = nextOffset;
        key = nextKey;
    }

    // Now verify that reverse transitions match up.

    millis = ISOChronology.getInstanceUTC().year().set(0, 2050);
    end = ISOChronology.getInstanceUTC().year().set(0, 1850);

    for (int i = transitions.size(); --i >= 0;) {
        long prev = tz.previousTransition(millis);
        if (prev == millis || prev < end) {
            break;
        }

        millis = prev;

        long trans = transitions.get(i).longValue();

        if (trans - 1 != millis) {
            System.out.println(
                    "*r* Error in " + tz.getID() + " " + new DateTime(millis, ISOChronology.getInstanceUTC())
                            + " != " + new DateTime(trans - 1, ISOChronology.getInstanceUTC()));

            return false;
        }
    }

    return true;
}

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From source file:org.elasticsearch.search.aggregations.bucket.histogram.DateHistogramAggregationBuilder.java

License:Apache License

DateTimeZone rewriteTimeZone(QueryShardContext context) throws IOException {
    final DateTimeZone tz = timeZone();
    if (field() != null && tz != null && tz.isFixed() == false && field() != null && script() == null) {
        final MappedFieldType ft = context.fieldMapper(field());
        final IndexReader reader = context.getIndexReader();
        if (ft != null && reader != null) {
            Long anyInstant = null;
            final IndexNumericFieldData fieldData = context.getForField(ft);
            for (LeafReaderContext ctx : reader.leaves()) {
                AtomicNumericFieldData leafFD = fieldData.load(ctx);
                SortedNumericDocValues values = leafFD.getLongValues();
                if (values.nextDoc() != DocIdSetIterator.NO_MORE_DOCS) {
                    anyInstant = values.nextValue();
                    break;
                }//from   ww w .  j  a  v  a 2 s.  c o m
            }

            if (anyInstant != null) {
                final long prevTransition = tz.previousTransition(anyInstant);
                final long nextTransition = tz.nextTransition(anyInstant);

                // We need all not only values but also rounded values to be within
                // [prevTransition, nextTransition].
                final long low;
                DateTimeUnit intervalAsUnit = getIntervalAsDateTimeUnit();
                if (intervalAsUnit != null) {
                    final DateTimeField dateTimeField = intervalAsUnit.field(tz);
                    low = dateTimeField.roundCeiling(prevTransition);
                } else {
                    final TimeValue intervalAsMillis = getIntervalAsTimeValue();
                    low = Math.addExact(prevTransition, intervalAsMillis.millis());
                }
                // rounding rounds down, so 'nextTransition' is a good upper bound
                final long high = nextTransition;

                if (ft.isFieldWithinQuery(reader, low, high, true, false, DateTimeZone.UTC, EPOCH_MILLIS_PARSER,
                        context) == Relation.WITHIN) {
                    // All values in this reader have the same offset despite daylight saving times.
                    // This is very common for location-based timezones such as Europe/Paris in
                    // combination with time-based indices.
                    return DateTimeZone.forOffsetMillis(tz.getOffset(anyInstant));
                }
            }
        }
    }
    return tz;
}

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From source file:org.teavm.classlib.impl.tz.ZoneInfoCompiler.java

License:Apache License

/**
 * @return false if error./*from w  ww .ja v  a2 s  .c  o  m*/
 */
static boolean test(String id, DateTimeZone tz) {
    if (!id.equals(tz.getID())) {
        return true;
    }

    // Test to ensure that reported transitions are not duplicated.

    long millis = ISOChronology.getInstanceUTC().year().set(0, 1850);
    long end = ISOChronology.getInstanceUTC().year().set(0, 2050);

    int offset = tz.getOffset(millis);

    List<Long> transitions = new ArrayList<>();

    while (true) {
        long next = tz.nextTransition(millis);
        if (next == millis || next > end) {
            break;
        }

        millis = next;

        int nextOffset = tz.getOffset(millis);

        if (offset == nextOffset) {
            System.out.println(
                    "*d* Error in " + tz.getID() + " " + new DateTime(millis, ISOChronology.getInstanceUTC()));
            return false;
        }

        transitions.add(Long.valueOf(millis));

        offset = nextOffset;
    }

    // Now verify that reverse transitions match up.

    millis = ISOChronology.getInstanceUTC().year().set(0, 2050);
    end = ISOChronology.getInstanceUTC().year().set(0, 1850);

    for (int i = transitions.size(); --i >= 0;) {
        long prev = tz.previousTransition(millis);
        if (prev == millis || prev < end) {
            break;
        }

        millis = prev;

        long trans = transitions.get(i).longValue();

        if (trans - 1 != millis) {
            System.out.println(
                    "*r* Error in " + tz.getID() + " " + new DateTime(millis, ISOChronology.getInstanceUTC())
                            + " != " + new DateTime(trans - 1, ISOChronology.getInstanceUTC()));

            return false;
        }
    }

    return true;
}

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