Example usage for java.time LocalDateTime toEpochSecond

Introduction

In this page you can find the example usage for java.time LocalDateTime toEpochSecond.

Prototype

default long toEpochSecond(ZoneOffset offset) 

Source Link

Document

Converts this date-time to the number of seconds from the epoch of 1970-01-01T00:00:00Z.

Usage

From source file:Main.java

/**
 * @param date//from w w w  .  j  a  v a 2  s .c  o  m
 *            Date for which seconds since the epoch date is to be calculated
 * @return Number of seconds after the unix epoch date equivalent to the given date
 */
public static Integer secondsSinceUnixEpoch(final LocalDateTime date) {
    if (date == null) {
        return null;
    }
    final Long timeInSeconds = Long.valueOf(date.toEpochSecond(ZoneOffset.UTC));
    return Integer.valueOf(timeInSeconds.intValue());
}

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From source file:io.pivotal.demo.smartgrid.frontend.timeseries.AggregateCounterTimeSeriesRepository.java

private TimeSeriesCollection convertToTimeSeriesCollection(AggregateCounterCollection acc) {

    TimeSeriesCollection tsc = new TimeSeriesCollection(acc.getName());

    for (Map.Entry<String, AggregateCounter> entry : acc.getAggregateCounters().entrySet()) {

        String timeSeriesName = entry.getKey();
        AggregateCounter aggregateCounter = entry.getValue();

        List<String> timeAxis = new ArrayList<>();
        List<String> valueAxis = new ArrayList<>();

        for (Map.Entry<String, String> dataPoint : aggregateCounter.getCounts().entrySet()) {

            String pit = dataPoint.getKey();
            String value = dataPoint.getValue();

            LocalDateTime ldt = LocalDateTime.parse(pit, DateTimeFormatter.ISO_DATE_TIME);
            timeAxis.add("" + ldt.toEpochSecond(ZoneOffset.UTC));
            valueAxis.add(value);//from   w ww  .j a  v  a 2 s. c o m
        }

        tsc.registerTimeSeries(timeSeriesName, timeAxis, valueAxis);
    }

    return tsc;
}

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