Subversion Repositories XServices

/*

 *   Copyright 2011 Brian Rosenberger (Brutex Network)

 *

 *   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 net.brutex.xservices.ws.impl;

import java.math.BigInteger;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.GregorianCalendar;

import java.util.TimeZone;

import javax.jws.WebService;

import net.brutex.xservices.types.DateFormatType;

import net.brutex.xservices.types.DateTimeUnits;

import net.brutex.xservices.util.BrutexNamespaces;

import net.brutex.xservices.ws.DateService;

import net.brutex.xservices.ws.XServicesFault;

/**

 * @author Brian Rosenberger

 *

 */

@WebService(

		targetNamespace = BrutexNamespaces.WS_XSERVICES,

		endpointInterface = "net.brutex.xservices.ws.DateService",

		serviceName = DateService.SERVICE_NAME

			)

public class DateServiceImpl implements DateService {

	private static String ERR_INVALIDFORMAT = "Invalid format pattern.";

	private static String ERR_INVALIDTIMEZONE = "Invalid timezone.";

	@Override

	public GregorianCalendar getDate(String timezone) throws XServicesFault {

		if (! isValidTimezone(timezone) ) {

			String valid_ids = "";

			String[] tid = TimeZone.getAvailableIDs();

			for (String s : tid) {

				valid_ids += s + "\n";

			}

			throw new XServicesFault("Please supply a valid timezone id or none. Valid timezones are:\n" + valid_ids,

					new Exception( ));

		}

			if (timezone == null || timezone.length()<1 ) timezone = "GMT0";

			GregorianCalendar c = new GregorianCalendar(TimeZone.getTimeZone(timezone));

			return c;

	}

	@Override

	public BigInteger getTimestamp() {

		Date d = new Date();

		long l = d.getTime();

		BigInteger timestamp = new BigInteger(Long.toString(l));

		return timestamp;

	}

	@Override

	public GregorianCalendar getInTimezone(GregorianCalendar cal,

			String timezone) throws XServicesFault {

		if(! isValidTimezone(timezone)) throw new XServicesFault(ERR_INVALIDTIMEZONE);

		GregorianCalendar c = new GregorianCalendar(TimeZone.getTimeZone(timezone));

		c.setTimeInMillis(cal.getTimeInMillis());

		return c;

	}

	@Override

	public String formatDate(GregorianCalendar cal, DateFormatType format) throws XServicesFault {

		return formatDateAdvanced(cal, format.format());

	}

	@Override

	public String formatDateAdvanced(GregorianCalendar cal, String format)

			throws XServicesFault {

		String result= null;

		try {

			SimpleDateFormat f = new SimpleDateFormat(format);

			result = f.format(cal.getTime());

		} catch (IllegalArgumentException e) {

			throw new XServicesFault(ERR_INVALIDFORMAT + e.getMessage());

		}

		return result;

	}

	@Override

	public GregorianCalendar parseDate(String s, DateFormatType format, String timezone) throws XServicesFault {

		return parseDateAdvanced(s, format.format(), timezone);

	}

	@Override

	public GregorianCalendar parseDateAdvanced(String s, String format, String timezone) throws XServicesFault {

		SimpleDateFormat f = null;

		Date date = null;

		if(timezone==null | timezone.equals("")) timezone = TimeZone.getDefault().getID();

		if(! isValidTimezone(timezone)) throw new XServicesFault(ERR_INVALIDTIMEZONE);

		try {

			f = new SimpleDateFormat(format);

			date = f.parse(s);

		} catch(IllegalArgumentException e) {

			throw new XServicesFault(ERR_INVALIDFORMAT + e.getMessage());

		} catch (ParseException e) {

			throw new XServicesFault("Cannot parse date: "+ e.getMessage());

		}

		GregorianCalendar cal = new GregorianCalendar();

		cal.setTimeZone(TimeZone.getTimeZone(timezone));

		cal.setTime(date);

		return cal;

	}

	@Override

	public BigInteger dateTimeDiff(GregorianCalendar fromCal,

			GregorianCalendar toCal) throws XServicesFault {

		long diff = toCal.getTimeInMillis() - fromCal.getTimeInMillis();

		BigInteger d = new BigInteger(String.valueOf(diff), 10);

		return d;

	}

	@Override

	public BigInteger dateTimeDiff2(GregorianCalendar fromCal,

			GregorianCalendar toCal, DateTimeUnits unit) throws XServicesFault {

		BigInteger d = dateTimeDiff(fromCal, toCal);

		switch (unit) {

		case SECONDS:

			d = d.divide(new BigInteger("1000"));

			break;

		case MINUTES:

			d = d.divide(new BigInteger("60000"));

			break;

		case HOURS:

			d = d.divide(new BigInteger("3600000"));

			break;

		case DAYS:

			d = d.divide(new BigInteger("86400000"));

		}

		return d;

	}

	private boolean isValidTimezone(String id) {

		boolean yes = false;

		for( String s: TimeZone.getAvailableIDs()) {

			if(s.equals(id)) {

				yes = true;

				break;

			}

		}

		return yes;

	}

}