Example usage for org.joda.time DateTimeField roundCeiling

Introduction

In this page you can find the example usage for org.joda.time DateTimeField roundCeiling.

Prototype

public abstract long roundCeiling(long instant);

Source Link

Document

Round to the highest whole unit of this field.

Usage

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 w  ww  .ja  va  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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