com.dell.doradus.search.parser.TimeUtils Maven / Gradle / Ivy
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/*
* Copyright (C) 2014 Dell, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.dell.doradus.search.parser;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Hashtable;
import java.util.TimeZone;
public class TimeUtils {
final static long ONE_SECOND = 1000;
final static long ONE_MINUTE = ONE_SECOND * 60;
final static long ONE_HOUR = ONE_MINUTE * 60;
final static long ONE_DAY = ONE_HOUR * 24;
final static long ONE_WEEK = ONE_DAY * 7;
final static long ONE_MONTH = ONE_DAY * 30;
final static long ONE_YEAR = ONE_DAY * 365;
final static long ONE_QUARTER = ONE_MONTH * 3;
static Hashtable functions = new Hashtable<>();
static Hashtable timeZoneShortNames = new Hashtable<>();
static SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
static TimeZone utc = TimeZone.getTimeZone("UTC");
static Calendar utcCalendar = Calendar.getInstance(utc);
public static Calendar getCalendarByName(String timeZone) {
timeZone = timeZone.trim();
TimeZone zone = TimeZone.getTimeZone(timeZone);
String id = zone.getID();
if (id.compareTo(timeZone) != 0) {
throw new IllegalArgumentException("Bad timezone name: '" + timeZone + "'");
}
return Calendar.getInstance(zone);
}
public static TimeZone getTimeZone(String timeZone) {
timeZone = timeZone.trim();
TimeZone zone = TimeZone.getTimeZone(timeZone);
String id = zone.getID();
if (id.compareTo(timeZone) != 0) {
throw new IllegalArgumentException("Bad timezone name: '" + timeZone + "'");
}
return zone;
}
public static Calendar getCalendarByValue(String timeZone) {
timeZone = timeZone.trim();
char ch = timeZone.charAt(0);
if (ch == '+' || ch == '-') {
timeZone = "GMT" + timeZone;
} else if (Character.getType(ch) == Character.DECIMAL_DIGIT_NUMBER) {
timeZone = "GMT+" + timeZone;
}
String prefix = timeZone.substring(0, 4);
String val = timeZone.substring(4);
switch (val.length()) {
case 1:
timeZone = prefix + "0" + val + ":00";
break;
case 2:
timeZone = prefix + val + ":00";
break;
case 3:
timeZone = prefix + "0" + val.substring(0, 1) + ":" + val.substring(1);
break;
case 4:
if (val.charAt(1) == ':')
timeZone = prefix + "0" + val;
else {
timeZone = prefix + val.substring(0, 2) + ":" + val.substring(2);
}
break;
case 5:
break;
default:
throw new IllegalArgumentException("Internal error: bad timezone(1)");
}
return getCalendarByName(timeZone);
}
public static Calendar getNowValue(Calendar calendar, String units, Integer number) {
Calendar c1 = (Calendar) calendar.clone();
if (units != null) {
switch (functions.get(units)) {
case 20: // minute
c1.add(Calendar.MINUTE, number);
break;
case 21: //hour
c1.add(Calendar.HOUR_OF_DAY, number);
break;
case 22: //day
c1.add(Calendar.DAY_OF_YEAR, number);
break;
case 23: //week
c1.add(Calendar.WEEK_OF_YEAR, number);
break;
case 24: //month
c1.add(Calendar.MONTH, number);
break;
case 25: // year
c1.add(Calendar.YEAR, number);
break;
default:
throw new IllegalArgumentException("Internal error: Unknown units for period definition:" + units);
}
}
return c1;
}
public static Calendar getPeriodStart(Calendar calendar, String units, String value) {
int number = 1;
if (value != null)
try {
number = Integer.parseInt(value);
if (number < 1)
throw new IllegalArgumentException("Period.Last* value must be greater than 0: " + value);
} catch (NumberFormatException e) {
throw new IllegalArgumentException("Bad format for Period.Last* value: " + value);
}
Calendar c1 = (Calendar) calendar.clone();
switch (functions.get(units)) {
case 1: //This minute
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
break;
case 2: //This hour
c1.set(Calendar.MINUTE, 0);
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
break;
case 3: //today
c1.clear(Calendar.AM_PM);
c1.set(Calendar.HOUR_OF_DAY, 0);
c1.set(Calendar.MINUTE, 0);
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
break;
case 4: //this week
c1.set(Calendar.DAY_OF_WEEK, c1.getFirstDayOfWeek());
c1.clear(Calendar.AM_PM);
c1.set(Calendar.HOUR_OF_DAY, 0);
c1.set(Calendar.MINUTE, 0);
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
break;
case 5: //this month
c1.set(Calendar.DAY_OF_MONTH, 1);
c1.clear(Calendar.AM_PM);
c1.set(Calendar.HOUR_OF_DAY, 0);
c1.set(Calendar.MINUTE, 0);
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
break;
case 6: //this year
c1.clear(Calendar.AM_PM);
c1.set(Calendar.HOUR_OF_DAY, 0);
c1.set(Calendar.MINUTE, 0);
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
c1.set(Calendar.DAY_OF_YEAR, 1);
break;
case 10: //last minute
c1.add(Calendar.MINUTE, -1 * number);
break;
case 11: //last hour
c1.add(Calendar.HOUR_OF_DAY, -1 * number);
break;
case 12: //last day
c1.add(Calendar.HOUR, -24 * number);
break;
case 13: //last week
c1.add(Calendar.DAY_OF_YEAR, -7 * number);
break;
case 14: //last month
c1.add(Calendar.MONTH, -1 * number);
break;
case 15: //last year
c1.add(Calendar.YEAR, -1 * number);
break;
default:
throw new IllegalArgumentException("Internal error: Unknown units for period definition:" + units);
}
return c1;
}
public static Calendar getPeriodEnd(Calendar calendar, String units) {
Calendar c1 = (Calendar) calendar.clone();
switch (functions.get(units)) {
case 1: //This minute
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
c1.add(Calendar.MINUTE, 1);
break;
case 2: //This hour
c1.set(Calendar.MINUTE, 0);
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
c1.add(Calendar.HOUR_OF_DAY, 1);
break;
case 3: //today
c1.clear(Calendar.AM_PM);
c1.set(Calendar.HOUR_OF_DAY, 0);
c1.set(Calendar.MINUTE, 0);
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
c1.add(Calendar.DAY_OF_YEAR, 1);
break;
case 4: //this week
c1.set(Calendar.DAY_OF_WEEK, c1.getFirstDayOfWeek());
c1.clear(Calendar.AM_PM);
c1.set(Calendar.HOUR_OF_DAY, 0);
c1.set(Calendar.MINUTE, 0);
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
c1.add(Calendar.WEEK_OF_YEAR, 1);
break;
case 5: //this month
c1.set(Calendar.DAY_OF_MONTH, 1);
c1.clear(Calendar.AM_PM);
c1.set(Calendar.HOUR_OF_DAY, 0);
c1.set(Calendar.MINUTE, 0);
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
c1.add(Calendar.MONTH, 1);
break;
case 6: //this year
c1.clear(Calendar.AM_PM);
c1.set(Calendar.HOUR_OF_DAY, 0);
c1.set(Calendar.MINUTE, 0);
c1.set(Calendar.SECOND, 0);
c1.set(Calendar.MILLISECOND, 0);
c1.set(Calendar.DAY_OF_YEAR, 1);
c1.add(Calendar.YEAR, 1);
break;
default:
break;
}
return c1;
}
public static boolean isThisUnit(String units) {
switch (functions.get(units)) {
case 1: //This minute
case 2: //This hour
case 3: //today
case 4: //this week
case 5: //this month
case 6: //this year
return true;
default:
return false;
}
}
public static String toUtcTime(Calendar calendar) {
utcCalendar.setTimeInMillis(calendar.getTimeInMillis());
//format.setCalendar(utcCalendar);
return format.format(utcCalendar.getTime());
}
public static long getTimeDifference(String unit, Calendar start, Calendar end) {
long diff =end.getTimeInMillis() - start.getTimeInMillis() ;
switch (functions.get(unit)) {
case 20: // minute
diff = diff / ONE_MINUTE;
break;
case 21: //hour
diff = diff / ONE_HOUR;
break;
case 22: //day
diff = diff / ONE_DAY;
break;
case 23: //week
diff = diff / ONE_WEEK;
break;
case 24: //month
diff = end.get(Calendar.YEAR) - start.get(Calendar.YEAR);
diff = diff * 12 + end.get(Calendar.MONTH) - start.get(Calendar.MONTH);
break;
case 25: //year
diff = end.get(Calendar.YEAR) - start.get(Calendar.YEAR);
break;
case 26: //quarter
diff = end.get(Calendar.YEAR) - start.get(Calendar.YEAR);
diff = diff * 12 + end.get(Calendar.MONTH) - start.get(Calendar.MONTH);
diff = diff/3;
break;
case 27: //second
diff = diff / ONE_SECOND;
break;
default:
throw new IllegalArgumentException("Unsupported date time unit:" + unit);
}
return diff;
}
static {
format.setTimeZone(utc);
functions.put(SemanticNames.ThisMinute, 1);
functions.put(SemanticNames.ThisHour, 2);
functions.put(SemanticNames.Today, 3);
functions.put(SemanticNames.ThisWeek, 4);
functions.put(SemanticNames.ThisMonth, 5);
functions.put(SemanticNames.ThisYear, 6);
functions.put(SemanticNames.LastMinute, 10);
functions.put(SemanticNames.LastHour, 11);
functions.put(SemanticNames.LastDay, 12);
functions.put(SemanticNames.LastWeek, 13);
functions.put(SemanticNames.LastMonth, 14);
functions.put(SemanticNames.LastYear, 15);
functions.put(SemanticNames.Minute, 20);
functions.put(SemanticNames.Hour, 21);
functions.put(SemanticNames.Day, 22);
functions.put(SemanticNames.Week, 23);
functions.put(SemanticNames.Month, 24);
functions.put(SemanticNames.Year, 25);
functions.put(SemanticNames.Minutes, 20);
functions.put(SemanticNames.Hours, 21);
functions.put(SemanticNames.Days, 22);
functions.put(SemanticNames.Weeks, 23);
functions.put(SemanticNames.Months, 24);
functions.put(SemanticNames.Years, 25);
functions.put(SemanticNames.Quarter, 26);
functions.put(SemanticNames.Second, 27);
//TODO : different timezones have the same shortName - how to select zone by shortName?
/*
String[] zoneIds = TimeZone.getAvailableIDs();
Date date = new Date();
for(String zoneId:zoneIds)
{
TimeZone timeZone = TimeZone.getTimeZone(zoneId) ;
boolean daylight = timeZone.inDaylightTime(date);
String shortName = timeZone.getDisplayName(daylight, TimeZone.SHORT, Locale.US);
String shortName1 = timeZone.getDisplayName(!daylight, TimeZone.SHORT, Locale.US);
String longName = timeZone.getDisplayName(daylight, TimeZone.LONG, Locale.US);
timeZoneShortNames.put(shortName, zoneId);
}
*/
}
}
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