Java tutorial
/* * Copyright 2017 Peer to Park. * * 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.peertopark.java.dates; import com.peertopark.java.commons.utilities.Objects; import static com.peertopark.java.dates.Dates.convert; import java.util.ArrayList; import java.util.Collection; import java.util.Date; import java.util.List; import org.joda.time.DateTime; import org.joda.time.Duration; import org.joda.time.Interval; /** * * @author hector */ public class Intervals { public static Interval getInterval(Date fromDate, Date untilDate) { return new Interval(convert(fromDate), convert(untilDate)); } public static Interval getInterval(DateTime fromDate, DateTime untilDate) { return new Interval(fromDate, untilDate); } public static Interval getInterval(long fromDate, long untilDate) { return new Interval(fromDate, untilDate); } public static Collection<Interval> split(Interval interval, Duration duration) { ArrayList<Interval> intervals = new ArrayList<Interval>(); long startMillis = interval.getStartMillis(); long endMillis = interval.getEndMillis(); long chunks = interval.toDurationMillis() / duration.getMillis(); for (int i = 0; i < chunks; i++) { long temporalEndMillis = startMillis + duration.getMillis(); intervals.add(getInterval(startMillis, temporalEndMillis)); startMillis = temporalEndMillis; } if (startMillis < endMillis) { intervals.add(getInterval(startMillis, endMillis)); } return intervals; } public static boolean overlaps(Interval interval, Interval toCompare) { if (Objects.allNotNull(toCompare, interval)) { return toCompare.overlaps(interval); } else { return false; } } /** * Get a list of DateTime with the days of week in a datetime interval * @param interval * @param dayOfWeek * @return List of DateTime */ public static List<DateTime> daysOfWeek(Interval interval, int dayOfWeek) { return Dates.daysOfWeekInDateInterval(interval.getStart(), interval.getEnd(), dayOfWeek); } public static boolean haveDayOfWeek(Interval interval, int dayOfWeek) { List<DateTime> list = daysOfWeek(interval, dayOfWeek); return !list.isEmpty(); } }