com.peertopark.java.dates.iterators.DayOfWeekIterator.java Source code

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Here is the source code for com.peertopark.java.dates.iterators.DayOfWeekIterator.java

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/*
 * 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.iterators;

import com.peertopark.java.commons.utilities.Numbers;
import com.peertopark.java.dates.Dates;
import java.util.Iterator;
import org.joda.time.DateTime;
import org.joda.time.Interval;
import org.joda.time.LocalDate;

/**
 *
 * @author hector
 */
public class DayOfWeekIterator implements Iterator<DateTime> {

    private final DateTime endDate;
    private final DateTime startDate;

    private LocalDate nextDate;

    public DayOfWeekIterator(DateTime startDate, DateTime endDate, int dayOfWeekToIterate) {
        this.startDate = startDate;
        this.endDate = endDate;
        nextDate = this.startDate.withDayOfWeek(dayOfWeekToIterate).toLocalDate();
        if (this.startDate.getDayOfWeek() > dayOfWeekToIterate) {
            nextDate = nextDate.plusWeeks(Numbers.ONE);
        }
    }

    public DayOfWeekIterator(Interval interval, int dayOfWeekToIterate) {
        this(interval.getStart(), interval.getEnd(), dayOfWeekToIterate);
    }

    public static DayOfWeekIterator build(DateTime startDate, DateTime endDate, int dayOfWeekToIterate) {
        return new DayOfWeekIterator(startDate, endDate, dayOfWeekToIterate);
    }

    public static DayOfWeekIterator build(Interval interval, int dayOfWeekToIterate) {
        return new DayOfWeekIterator(interval, dayOfWeekToIterate);
    }

    @Override
    public boolean hasNext() {
        return Dates.notAfterOrEquals(endDate, nextDate.toDateTimeAtStartOfDay());
    }

    @Override
    public DateTime next() {
        DateTime resultDate = nextDate.toDateTimeAtStartOfDay();
        nextDate = nextDate.plusWeeks(Numbers.ONE);
        return resultDate;
    }

    @Override
    public String toString() {
        return "DayOfWeekIterator{" + "endDate=" + endDate + ", startDate=" + startDate + ", nextDate=" + nextDate
                + '}';
    }

}