Example usage for org.joda.time DateTime minusDays

Introduction

In this page you can find the example usage for org.joda.time DateTime minusDays.

Prototype

public DateTime minusDays(int days)

Source Link

Document

Returns a copy of this datetime minus the specified number of days.

Usage

From source file:updaters.FeedStatsCalculator.java

License:Open Source License

/**
 * Apply not just the feed stats, but also the 
 */// www .j a v a 2s  .c o m

private void calculateStartAndEnd() throws Exception {
    // First, read feed_info.txt
    // TODO is 1 ever not the correct value?
    FeedInfo feedInfo = store.getFeedInfoForId(1);
    if (feedInfo != null) {
        ServiceDate d;
        d = feedInfo.getStartDate();
        if (d != null) {
            Calendar c = d.getAsCalendar(timezone);
            // move to GTFS noon, which will always be during the day. This accounts for both
            // multitimezone feeds and for daylight savings time 
            c.add(Calendar.HOUR_OF_DAY, 12);
            startDate = c.getTime();
        }

        d = feedInfo.getEndDate();
        if (d != null) {
            Calendar c = d.getAsCalendar(timezone);
            c.add(Calendar.HOUR_OF_DAY, 12);
            endDate = c.getTime();
        }
    }

    // we have an authoritative answer
    if (startDate != null && endDate != null)
        return;

    // let OBA deal with the complexities of interactions between
    // calendar.txt and
    // calendar_dates.txt
    // This code is lifted and slightly modified from
    // https://github.com/demory/otp_gtfs/blob/master/java/gtfsmetrics/src/main/java/org/openplans/gtfsmetrics/CalendarStatus.java
    Map<AgencyAndId, Set<ServiceDate>> addExceptions = new HashMap<AgencyAndId, Set<ServiceDate>>();
    Map<AgencyAndId, Set<String>> removeExceptions = new HashMap<AgencyAndId, Set<String>>();
    for (ServiceCalendarDate date : store.getAllCalendarDates()) {
        if (date.getExceptionType() == ServiceCalendarDate.EXCEPTION_TYPE_ADD) {
            Set<ServiceDate> dateSet = addExceptions.get(date.getServiceId());
            if (dateSet == null) {
                dateSet = new HashSet<ServiceDate>();
                addExceptions.put(date.getServiceId(), dateSet);
            }
            dateSet.add(date.getDate());
        } else if (date.getExceptionType() == ServiceCalendarDate.EXCEPTION_TYPE_REMOVE) {
            Set<String> dateSet = removeExceptions.get(date.getServiceId());
            if (dateSet == null) {
                dateSet = new HashSet<String>();
                removeExceptions.put(date.getServiceId(), dateSet);
            }
            dateSet.add(constructMDYString(date.getDate()));
        }
    }

    DateTime latestEnd = new DateTime(0);
    DateTime earliestStart = null;

    for (ServiceCalendar svcCal : store.getAllCalendars()) {

        Calendar c;
        c = svcCal.getStartDate().getAsCalendar(timezone);
        c.add(Calendar.HOUR_OF_DAY, 12);
        DateTime start = new DateTime(c.getTime());

        c = svcCal.getEndDate().getAsCalendar(timezone);
        c.add(Calendar.HOUR_OF_DAY, 12);
        DateTime end = new DateTime(c.getTime());

        int totalDays = Days.daysBetween(start, end).getDays();
        for (int d = 0; d < totalDays; d++) {
            int gd = getDay(svcCal, end.dayOfWeek().get());// dateCal.get(Calendar.DAY_OF_WEEK));
            boolean removeException = false;
            Set<String> dateSet = removeExceptions.get(svcCal.getServiceId());
            if (dateSet != null) {
                removeException = dateSet.contains(constructMDYString(end));
            }
            if (gd == 1 && !removeException)
                break;
            end = end.minusDays(1);
        }
        if (end.isAfter(latestEnd))
            latestEnd = end;

        totalDays = Days.daysBetween(start, end).getDays();
        for (int d = 0; d < totalDays; d++) {
            int gd = getDay(svcCal, start.dayOfWeek().get());// dateCal.get(Calendar.DAY_OF_WEEK));
            boolean removeException = false;
            Set<String> dateSet = removeExceptions.get(svcCal.getServiceId());
            if (dateSet != null) {
                removeException = dateSet.contains(constructMDYString(start));
            }
            if (gd == 1 && !removeException)
                break;
            start = start.plusDays(1);
        }
        if (earliestStart == null || start.isBefore(earliestStart))
            earliestStart = start;

    }

    // now, expand based on calendar_dates.txt
    for (Set<ServiceDate> dateSet : addExceptions.values()) {
        for (ServiceDate sd : dateSet) {
            DateTime dt = new DateTime(sd.getAsDate(timezone).getTime());
            if (dt.isAfter(latestEnd))
                latestEnd = dt;
            if (dt.isBefore(earliestStart))
                earliestStart = dt;
        }
    }

    this.startDate = earliestStart.toDate();
    this.endDate = latestEnd.toDate();
}