Java example source code file (BasicDayOfMonthDateTimeField.java)

This example Java source code file (BasicDayOfMonthDateTimeField.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

basicchronology, basicdayofmonthdatetimefield, durationfield, object, override, precisedurationdatetimefield, suppresswarnings

The BasicDayOfMonthDateTimeField.java Java example source code

/*
 *  Copyright 2001-2014 Stephen Colebourne
 *
 *  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 org.joda.time.chrono;

import org.joda.time.DateTimeFieldType;
import org.joda.time.DurationField;
import org.joda.time.ReadablePartial;
import org.joda.time.field.PreciseDurationDateTimeField;

/**
 * Provides time calculations for the day of the month component of time.
 *
 * @author Guy Allard
 * @author Stephen Colebourne
 * @author Brian S O'Neill
 * @since 1.1, refactored from GJDayOfMonthDateTimeField
 */
final class BasicDayOfMonthDateTimeField extends PreciseDurationDateTimeField {

    @SuppressWarnings("unused")
    private static final long serialVersionUID = -4677223814028011723L;

    private final BasicChronology iChronology;

    /**
     * Restricted constructor.
     */
    BasicDayOfMonthDateTimeField(BasicChronology chronology, DurationField days) {
        super(DateTimeFieldType.dayOfMonth(), days);
        iChronology = chronology;
    }

    //-----------------------------------------------------------------------
    public int get(long instant) {
        return iChronology.getDayOfMonth(instant);
    }

    public DurationField getRangeDurationField() {
        return iChronology.months();
    }

    public int getMinimumValue() {
        return 1;
    }

    public int getMaximumValue() {
        return iChronology.getDaysInMonthMax();
    }

    public int getMaximumValue(long instant) {
        return iChronology.getDaysInMonthMax(instant);
    }

    public int getMaximumValue(ReadablePartial partial) {
        if (partial.isSupported(DateTimeFieldType.monthOfYear())) {
            int month = partial.get(DateTimeFieldType.monthOfYear());
            if (partial.isSupported(DateTimeFieldType.year())) {
                int year = partial.get(DateTimeFieldType.year());
                return iChronology.getDaysInYearMonth(year, month);
            }
            return iChronology.getDaysInMonthMax(month);
        }
        return getMaximumValue();
    }

    public int getMaximumValue(ReadablePartial partial, int[] values) {
        int size = partial.size();
        for (int i = 0; i < size; i++) {
            if (partial.getFieldType(i) == DateTimeFieldType.monthOfYear()) {
                int month = values[i];
                for (int j = 0; j < size; j++) {
                    if (partial.getFieldType(j) == DateTimeFieldType.year()) {
                        int year = values[j];
                        return iChronology.getDaysInYearMonth(year, month);
                    }
                }
                return iChronology.getDaysInMonthMax(month);
            }
        }
        return getMaximumValue();
    }

    protected int getMaximumValueForSet(long instant, int value) {
        return iChronology.getDaysInMonthMaxForSet(instant, value);
    }

    @Override
    public boolean isLeap(long instant) {
        return iChronology.isLeapDay(instant);
    }

    /**
     * Serialization singleton
     */
    private Object readResolve() {
        return iChronology.dayOfMonth();
    }
}