CalendarFormat.java

/*
 * Copyright 2011 Blazebit
 */
package com.blazebit.text;

import java.text.ParseException;
import java.util.Calendar;

/**
 * 
 * @author Christian Beikov
 * @since 0.1.2
 */
public class CalendarFormat extends AbstractFormat<Calendar> {

	private static final long serialVersionUID = 1L;

	public CalendarFormat() {
		super(Calendar.class);
	}

	@SuppressWarnings("unused")
	public Calendar parse(String value, ParserContext context) {
		Calendar calendar = Calendar.getInstance();
		Object o = null;

		if (context != null) {
			context.getAttribute("format");

			if (o != null && !(o instanceof java.text.DateFormat)) {
				throw new IllegalArgumentException(
						"Illegal format object in context");
			}
		}

		if (o == null) {
			o = java.text.DateFormat.getDateTimeInstance();
		}

		try {
			calendar.setTime(((java.text.DateFormat) o).parse(value));
			return calendar;
		} catch (ParseException ex) {
			return null;
		}
	}

	@Override
	public String format(Calendar value, ParserContext context) {
		Object o = null;

		if (context != null) {
			o = context.getAttribute("format");

			if (o != null && !(o instanceof java.text.DateFormat)) {
				throw new IllegalArgumentException(
						"Illegal format object in context");
			}
		}

		if (o == null) {
			o = java.text.DateFormat.getDateTimeInstance();
		}

		return ((java.text.DateFormat) o).format(value.getTime());
	}
}