org.wildfly.clustering.marshalling.protostream.util.CalendarMarshaller Maven / Gradle / Ivy

Go to download
/*
 * Copyright The WildFly Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.wildfly.clustering.marshalling.protostream.util;

import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

import org.infinispan.protostream.descriptors.WireType;
import org.wildfly.clustering.marshalling.protostream.ProtoStreamMarshaller;
import org.wildfly.clustering.marshalling.protostream.ProtoStreamReader;
import org.wildfly.clustering.marshalling.protostream.ProtoStreamWriter;

/**
 * Mashaller for a {@link java.util.Calendar}.
 * @author Paul Ferraro
 */
public class CalendarMarshaller implements ProtoStreamMarshaller {

	private static final int TYPE_INDEX = 1;
	private static final int TIME_INDEX = 2;
	private static final int LENIENT_INDEX = 3;
	private static final int TIME_ZONE_INDEX = 4;
	private static final int FIRST_DAY_OF_WEEK_INDEX = 5;
	private static final int MIN_DAYS_IN_FIRST_WEEK_INDEX = 6;

	private static final Calendar DEFAULT = new Calendar.Builder().setInstant(0).build();

	@Override
	public Calendar readFrom(ProtoStreamReader reader) throws IOException {
		Calendar.Builder builder = new Calendar.Builder().setInstant(0);
		int firstDayOfWeek = DEFAULT.getFirstDayOfWeek();
		int minDaysInFirstWeek = DEFAULT.getMinimalDaysInFirstWeek();
		while (!reader.isAtEnd()) {
			int tag = reader.readTag();
			switch (WireType.getTagFieldNumber(tag)) {
				case TYPE_INDEX:
					builder.setCalendarType(reader.readString());
					break;
				case TIME_INDEX:
					builder.setInstant(reader.readObject(Date.class));
					break;
				case LENIENT_INDEX:
					builder.setLenient(reader.readBool());
					break;
				case TIME_ZONE_INDEX:
					builder.setTimeZone(TimeZone.getTimeZone(reader.readString()));
					break;
				case FIRST_DAY_OF_WEEK_INDEX:
					firstDayOfWeek = reader.readUInt32();
					break;
				case MIN_DAYS_IN_FIRST_WEEK_INDEX:
					minDaysInFirstWeek = reader.readUInt32();
					break;
				default:
					reader.skipField(tag);
			}
		}
		return builder.setWeekDefinition(firstDayOfWeek, minDaysInFirstWeek).build();
	}

	@Override
	public void writeTo(ProtoStreamWriter writer, Calendar calendar) throws IOException {
		String type = calendar.getCalendarType();
		if (!type.equals(DEFAULT.getCalendarType())) {
			writer.writeString(TYPE_INDEX, type);
		}
		Date time = calendar.getTime();
		if (!time.equals(DEFAULT.getTime())) {
			writer.writeObject(TIME_INDEX, time);
		}
		boolean lenient = calendar.isLenient();
		if (lenient != DEFAULT.isLenient()) {
			writer.writeBool(LENIENT_INDEX, lenient);
		}
		TimeZone zone = calendar.getTimeZone();
		if (!zone.equals(DEFAULT.getTimeZone())) {
			writer.writeString(TIME_ZONE_INDEX, zone.getID());
		}
		int firstDayOfWeek = calendar.getFirstDayOfWeek();
		if (firstDayOfWeek != DEFAULT.getFirstDayOfWeek()) {
			writer.writeUInt32(FIRST_DAY_OF_WEEK_INDEX, firstDayOfWeek);
		}
		int minDaysInFirstWeek = calendar.getMinimalDaysInFirstWeek();
		if (minDaysInFirstWeek != DEFAULT.getMinimalDaysInFirstWeek()) {
			writer.writeUInt32(MIN_DAYS_IN_FIRST_WEEK_INDEX, minDaysInFirstWeek);
		}
	}

	@Override
	public Class getJavaClass() {
		return Calendar.class;
	}
}