/*
* Copyright (C) 2005 Joe Walnes.
* Copyright (C) 2006, 2007, 2011, 2013, 2014 XStream Committers.
* All rights reserved.
*
* The software in this package is published under the terms of the BSD
* style license a copy of which has been included with this distribution in
* the LICENSE.txt file.
*
* Created on 03. October 2005 by Joerg Schaible
*/
package com.thoughtworks.xstream.converters.extended;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.TimeZone;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.ISODateTimeFormat;
import com.thoughtworks.xstream.converters.ConversionException;
import com.thoughtworks.xstream.converters.basic.AbstractSingleValueConverter;
/**
* A converter for {@link GregorianCalendar} conforming to the ISO8601 standard.
* <p>
* The converter will always serialize the calendar value in UTC and deserialize it to a value in the current default
* time zone.
* </p>
*
* @author Mauro Talevi
* @author Jörg Schaible
* @see <a href="http://www.iso.org/iso/home/store/catalogue_ics/catalogue_detail_ics.htm?csnumber=40874">ISO 8601</a>
* @since 1.1.3
*/
public class ISO8601GregorianCalendarConverter extends AbstractSingleValueConverter {
private static final DateTimeFormatter[] formattersUTC = new DateTimeFormatter[]{ //
ISODateTimeFormat.dateTime(), //
ISODateTimeFormat.dateTimeNoMillis(), //
ISODateTimeFormat.basicDateTime(), //
ISODateTimeFormat.basicOrdinalDateTime(), //
ISODateTimeFormat.basicOrdinalDateTimeNoMillis(), //
ISODateTimeFormat.basicTime(), //
ISODateTimeFormat.basicTimeNoMillis(), //
ISODateTimeFormat.basicTTime(), //
ISODateTimeFormat.basicTTimeNoMillis(), //
ISODateTimeFormat.basicWeekDateTime(), //
ISODateTimeFormat.basicWeekDateTimeNoMillis(), //
ISODateTimeFormat.ordinalDateTime(), //
ISODateTimeFormat.ordinalDateTimeNoMillis(), //
ISODateTimeFormat.time(), //
ISODateTimeFormat.timeNoMillis(), //
ISODateTimeFormat.tTime(), //
ISODateTimeFormat.tTimeNoMillis(), //
ISODateTimeFormat.weekDateTime(), //
ISODateTimeFormat.weekDateTimeNoMillis() //
};
private static final DateTimeFormatter[] formattersNoUTC = new DateTimeFormatter[]{ //
ISODateTimeFormat.basicDate(), //
ISODateTimeFormat.basicOrdinalDate(), //
ISODateTimeFormat.basicWeekDate(), //
ISODateTimeFormat.date(), //
ISODateTimeFormat.dateHour(), //
ISODateTimeFormat.dateHourMinute(), //
ISODateTimeFormat.dateHourMinuteSecond(), //
ISODateTimeFormat.dateHourMinuteSecondFraction(), //
ISODateTimeFormat.dateHourMinuteSecondMillis(), //
ISODateTimeFormat.hour(), //
ISODateTimeFormat.hourMinute(), //
ISODateTimeFormat.hourMinuteSecond(), //
ISODateTimeFormat.hourMinuteSecondFraction(), //
ISODateTimeFormat.hourMinuteSecondMillis(), //
ISODateTimeFormat.ordinalDate(), //
ISODateTimeFormat.weekDate(), //
ISODateTimeFormat.year(), //
ISODateTimeFormat.yearMonth(), //
ISODateTimeFormat.yearMonthDay(), //
ISODateTimeFormat.weekyear(), //
ISODateTimeFormat.weekyearWeek(), //
ISODateTimeFormat.weekyearWeekDay() //
};
@Override
public boolean canConvert(final Class<?> type) {
return type.equals(GregorianCalendar.class);
}
@Override
public Object fromString(final String str) {
for (final DateTimeFormatter formatter : formattersUTC) {
try {
final DateTime dt = formatter.parseDateTime(str);
final Calendar calendar = dt.toGregorianCalendar();
calendar.setTimeZone(TimeZone.getDefault());
return calendar;
} catch (final IllegalArgumentException e) {
// try with next formatter
}
}
final String timeZoneID = TimeZone.getDefault().getID();
for (final DateTimeFormatter element : formattersNoUTC) {
try {
final DateTimeFormatter formatter = element.withZone(DateTimeZone.forID(timeZoneID));
final DateTime dt = formatter.parseDateTime(str);
final Calendar calendar = dt.toGregorianCalendar();
calendar.setTimeZone(TimeZone.getDefault());
return calendar;
} catch (final IllegalArgumentException e) {
// try with next formatter
}
}
throw new ConversionException("Cannot parse date " + str);
}
@Override
public String toString(final Object obj) {
final DateTime dt = new DateTime(obj);
return dt.toString(formattersUTC[0]);
}
}