com.helger.datetime.holiday.parser.impl.FixedWeekdayRelativeToFixedParser.java Source code

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Here is the source code for com.helger.datetime.holiday.parser.impl.FixedWeekdayRelativeToFixedParser.java

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/**
 * Copyright (C) 2014-2015 Philip Helger (www.helger.com)
 * philip[at]helger[dot]com
 *
 * 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.helger.datetime.holiday.parser.impl;

import org.joda.time.LocalDate;

import com.helger.datetime.holiday.HolidayMap;
import com.helger.datetime.holiday.IHolidayType;
import com.helger.datetime.holiday.ResourceBundleHoliday;
import com.helger.datetime.holiday.config.FixedWeekdayRelativeToFixed;
import com.helger.datetime.holiday.config.Holidays;
import com.helger.datetime.holiday.config.When;
import com.helger.datetime.holiday.mgr.XMLUtil;
import com.helger.datetime.holiday.parser.AbstractHolidayParser;

/**
 * Parses fixed weekday relative to fixed date.
 * 
 * @author Sven Diedrichsen
 * @author Philip Helger
 */
public class FixedWeekdayRelativeToFixedParser extends AbstractHolidayParser {
    private static final FixedWeekdayRelativeToFixedParser s_aInstance = new FixedWeekdayRelativeToFixedParser();

    private FixedWeekdayRelativeToFixedParser() {
    }

    public static FixedWeekdayRelativeToFixedParser getInstance() {
        return s_aInstance;
    }

    /**
     * Parses the provided configuration and creates holidays for the provided
     * year.
     */
    public void parse(final int nYear, final HolidayMap aHolidayMap, final Holidays aConfig) {
        for (final FixedWeekdayRelativeToFixed aFixedWeekdayRelativeToFixed : aConfig
                .getFixedWeekdayRelativeToFixed()) {
            if (!isValid(aFixedWeekdayRelativeToFixed, nYear))
                continue;

            // parsing fixed day
            final int nExpectedWeekday = XMLUtil.getWeekday(aFixedWeekdayRelativeToFixed.getWeekday());
            LocalDate aDay = XMLUtil.create(nYear, aFixedWeekdayRelativeToFixed.getDay());
            do {
                // move fixed to first occurrence of weekday
                aDay = aFixedWeekdayRelativeToFixed.getWhen() == When.AFTER ? aDay.plusDays(1) : aDay.minusDays(1);
            } while (aDay.getDayOfWeek() != nExpectedWeekday);
            int nDays = 0;
            switch (aFixedWeekdayRelativeToFixed.getWhich()) {
            case FIRST:
                break;
            case SECOND:
                nDays = 7;
                break;
            case THIRD:
                nDays = 14;
                break;
            case FOURTH:
                nDays = 21;
                break;
            case LAST:
                // seems to be unsupported
                break;
            }
            // move day further if it is second, third or fourth weekday
            aDay = aFixedWeekdayRelativeToFixed.getWhen() == When.AFTER ? aDay.plusDays(nDays)
                    : aDay.minusDays(nDays);
            final IHolidayType aType = XMLUtil.getType(aFixedWeekdayRelativeToFixed.getLocalizedType());
            final String sPropertyKey = aFixedWeekdayRelativeToFixed.getDescriptionPropertiesKey();
            aHolidayMap.add(aDay, new ResourceBundleHoliday(aType, sPropertyKey));
        }
    }
}