99 lines
2.9 KiB
Java
99 lines
2.9 KiB
Java
package org.gcube.dataharvest.utils;
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import java.text.DateFormat;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.TimeZone;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public class DateUtils {
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private static Logger logger = LoggerFactory.getLogger(DateUtils.class);
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public static TimeZone UTC_TIMEZONE = TimeZone.getTimeZone("UTC");
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public static final String DATETIME_PATTERN = "yyyy-MM-dd HH:mm:ss.SSS Z";
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public static final DateFormat DEFAULT_DATE_FORMAT;
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public static final String LAUNCH_DATE_FORMAT_PATTERN = "yyyy-MM-dd";
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public static final DateFormat LAUNCH_DATE_FORMAT;
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public static final String UTC_DATE_FORMAT_PATTERN = "yyyy-MM-dd Z";
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public static final DateFormat UTC_DATE_FORMAT;
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public static final String UTC = "+0000";
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static {
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DEFAULT_DATE_FORMAT = getUTCDateFormat(DATETIME_PATTERN);
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LAUNCH_DATE_FORMAT = getUTCDateFormat(LAUNCH_DATE_FORMAT_PATTERN);
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UTC_DATE_FORMAT = getUTCDateFormat(UTC_DATE_FORMAT_PATTERN);
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}
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public static DateFormat getUTCDateFormat(String pattern){
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DateFormat dateFormat = new SimpleDateFormat(pattern);
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dateFormat.setTimeZone(UTC_TIMEZONE);
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return dateFormat;
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}
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public static Calendar getUTCCalendarInstance(){
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return Calendar.getInstance(UTC_TIMEZONE);
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}
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public static Calendar getPreviousPeriod(MeasureType measureType) {
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Calendar now = Calendar.getInstance();
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switch(measureType) {
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case YEARLY:
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now.add(Calendar.YEAR, -1);
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now.set(Calendar.MONTH, Calendar.JANUARY);
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now.set(Calendar.DAY_OF_MONTH,1);
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break;
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case MONTHLY:
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now.add(Calendar.MONTH, -1);
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now.set(Calendar.DAY_OF_MONTH,1);
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break;
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case DAILY:
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now.add(Calendar.DAY_OF_MONTH, -1);
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break;
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default:
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break;
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}
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now.set(Calendar.HOUR_OF_DAY, 0);
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now.set(Calendar.MINUTE, 0);
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now.set(Calendar.SECOND, 0);
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now.set(Calendar.MILLISECOND, 0);
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return now;
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}
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public static Calendar getStartCalendar(int year, int month, int day){
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Calendar aggregationStartCalendar = getUTCCalendarInstance();
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aggregationStartCalendar.set(Calendar.YEAR, year);
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aggregationStartCalendar.set(Calendar.MONTH, month);
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aggregationStartCalendar.set(Calendar.DAY_OF_MONTH, day);
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aggregationStartCalendar.set(Calendar.HOUR_OF_DAY, 0);
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aggregationStartCalendar.set(Calendar.MINUTE, 0);
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aggregationStartCalendar.set(Calendar.SECOND, 0);
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aggregationStartCalendar.set(Calendar.MILLISECOND, 0);
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logger.debug("{}", DEFAULT_DATE_FORMAT.format(aggregationStartCalendar.getTime()));
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return aggregationStartCalendar;
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}
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public static Date getEndDateFromStartDate(MeasureType aggregationType, Date startDate, int offset) {
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Calendar aggregationEndDate = getUTCCalendarInstance();
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aggregationEndDate.setTimeInMillis(startDate.getTime());
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aggregationEndDate.add(aggregationType.getCalendarField(), offset);
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return aggregationEndDate.getTime();
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}
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}
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