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66 brianR 1 
/*
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 *   Copyright 2011 Brian Rosenberger (Brutex Network)
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 *
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 *   Licensed under the Apache License, Version 2.0 (the "License");
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 *   you may not use this file except in compliance with the License.
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 *   You may obtain a copy of the License at
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 *
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 *       http://www.apache.org/licenses/LICENSE-2.0
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 *
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 *   Unless required by applicable law or agreed to in writing, software
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 *   distributed under the License is distributed on an "AS IS" BASIS,
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 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 *   See the License for the specific language governing permissions and
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 *   limitations under the License.
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 */
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package net.brutex.xservices.ws;
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import java.math.BigInteger;
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import java.util.GregorianCalendar;
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import javax.jws.WebMethod;
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import javax.jws.WebParam;
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import javax.jws.WebService;
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import javax.xml.bind.annotation.XmlElement;
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import net.brutex.xservices.types.DateFormatType;
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import net.brutex.xservices.types.DateTimeUnits;
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import net.brutex.xservices.util.BrutexNamespaces;
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import org.apache.cxf.annotations.WSDLDocumentation;
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import org.apache.cxf.annotations.WSDLDocumentationCollection;
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/**
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 * Date and time related services.
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 * @author Brian Rosenberger
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 *
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 */
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@WebService(targetNamespace = BrutexNamespaces.WS_XSERVICES)
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@WSDLDocumentationCollection(
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    {
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    	@WSDLDocumentation(value = BrutexNamespaces.BRUTEX_COPYRIGHT, placement = WSDLDocumentation.Placement.TOP)
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    }
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)
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public interface DateService {
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	public static final String SERVICE_NAME = "DateService";
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	final String OPERATION_GETDATE = "getDate";
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	final String OPERATION_GETTIMESTAMP = "getTimestamp";
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	final String OPERATION_GETTIMESTAMP2 = "getTimestamp2";
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	final String OPERATION_GETINTIMEZONE = "getInTimezone";
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	final String OPERATION_FORMATDATE = "formatDate";
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	final String OPERATION_FORMATDATEADVANCED = "formatDateAdvanced";
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	final String OPERATION_PARSEDATE = "parseDate";
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	final String OPERATION_PARSEDATEADVANCED = "parseDateAdvanced";
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	final String OPERATION_DATETIMEDIFF = "dateTimeDiff";
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	final String OPERATION_DATETIMEDIFF2 = "dateTimeDiff2";
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	final String OPERATION_DATEADD = "dateAdd";
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	final String PARAM_TIMEZONE = "timezone";
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	final String PARAM_DATETIME = "datetime";
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	final String PARAM_FORMAT = "format";
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	final String PARAM_UNIT = "unit";
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	/**
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	 * Get current date and time.
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	 *
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	 * @param timezone Optional timezone. Defaults to server timezone.
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	 * @return Current date and time.
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	 * @throws XServicesFault
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	 */
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	@WebMethod(operationName=OPERATION_GETDATE)
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	@WSDLDocumentation(value="Get current date and time.")
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	public abstract GregorianCalendar getDate(
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			@WebParam(name=PARAM_TIMEZONE) String timezone) throws XServicesFault;
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	/**
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	 * Get milliseconds since 01.01.1970.
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	 *
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	 * @return timestamp milliseconds
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	 */
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	@WebMethod(operationName=OPERATION_GETTIMESTAMP)
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	@WSDLDocumentation(value="Get milliseconds since 01.01.1970 (Unix timestap).")
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	public abstract BigInteger getTimestamp();
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	/**
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	 * Get seconds since 01.01.1970.
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	 *
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	 * @return timestamp seconds
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	 */
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	@WebMethod(operationName=OPERATION_GETTIMESTAMP2)
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	@WSDLDocumentation(value="Get seconds since 01.01.1970 (Unix timestap).")
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	public abstract BigInteger getTimestamp2();
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	/**
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	 * Display a date time with a different time zone.
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	 * Changes representation only (no conversion).
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	 *
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	 * @param cal date time.
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	 * @param timezone time zone
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	 * @return date time
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	 * @throws XServicesFault
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	 */
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	@WebMethod(operationName=OPERATION_GETINTIMEZONE)
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	public abstract GregorianCalendar getInTimezone(
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			@WebParam(name=PARAM_DATETIME) @XmlElement(required=true) GregorianCalendar cal,
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			@WebParam(name=PARAM_TIMEZONE) @XmlElement(required=true) String timezone) throws XServicesFault;
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	/**
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	 * Formats a date with pre-defined patterns.
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	 *
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	 * @param cal date time to be formatted
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	 * @param format Pattern to be used for date formating
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	 * @return formatted date/time string
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	 * @throws XServicesFault
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	 */
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	@WebMethod(operationName=OPERATION_FORMATDATE)
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	public abstract String formatDate(
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			@WebParam(name=PARAM_DATETIME) @XmlElement(required=true) GregorianCalendar cal,
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			@WebParam(name=PARAM_FORMAT) @XmlElement(required=true) DateFormatType format) throws XServicesFault;
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	/**
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	 * Formats a date with a free form pattern.
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	 * Uses SimpleDateFormat patterns
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	 * The following pattern letters are defined (all other characters from 'A' to 'Z' and from 'a' to 'z' are reserved):
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    Letter	Date or Time Component	Presentation	Examples
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    G	Era designator	Text	AD
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    y	Year	Year	1996; 96
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    M	Month in year	Month	July; Jul; 07
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    w	Week in year	Number	27
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    W	Week in month	Number	2
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    D	Day in year	Number	189
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    d	Day in month	Number	10
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    F	Day of week in month	Number	2
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    E	Day in week	Text	Tuesday; Tue
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    a	Am/pm marker	Text	PM
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    H	Hour in day (0-23)	Number	0
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    k	Hour in day (1-24)	Number	24
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    K	Hour in am/pm (0-11)	Number	0
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    h	Hour in am/pm (1-12)	Number	12
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    m	Minute in hour	Number	30
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    s	Second in minute	Number	55
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    S	Millisecond	Number	978
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    z	Time zone	General time zone	Pacific Standard Time; PST; GMT-08:00
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    Z	Time zone	RFC 822 time zone	-0800
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	 * @param cal Date time to be formatted
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	 * @param format Format string
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	 * @return Date time formatted according to format string
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	 * @throws XServicesFault
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	 */
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	@WebMethod(operationName=OPERATION_FORMATDATEADVANCED)
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	public abstract String formatDateAdvanced(
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			@WebParam(name=PARAM_DATETIME) @XmlElement(required=true) GregorianCalendar cal,
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			@WebParam(name=PARAM_FORMAT) @XmlElement(required=true) String format) throws XServicesFault;
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	/**
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	 * Converts a string into date using pre-defined date formats.
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	 *
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	 * @param s Date/ time as string
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	 * @param format date format
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	 * @param timezone timezone
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	 * @return XML Date
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	 * @throws XServicesFault
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	 */
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	@WebMethod(operationName=OPERATION_PARSEDATE)
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	public abstract GregorianCalendar parseDate(
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			@WebParam(name=PARAM_DATETIME) @XmlElement(required=true) String s,
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			@WebParam(name=PARAM_FORMAT) @XmlElement(required=true) DateFormatType format,
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			@WebParam(name=PARAM_TIMEZONE) String timezone) throws XServicesFault;
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	/**
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	 * Converts a string into date using any format.
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	 * @param s date/ time as string
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	 * @param format date format
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	 * @param timezone timezone
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	 * @return XML Date
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	 * @throws XServicesFault
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	 */
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	@WebMethod(operationName=OPERATION_PARSEDATEADVANCED)
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	public abstract GregorianCalendar parseDateAdvanced(
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			@WebParam(name=PARAM_DATETIME) @XmlElement(required=true) String s,
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			@WebParam(name=PARAM_FORMAT) @XmlElement(required=true) String format,
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			@WebParam(name=PARAM_TIMEZONE) String timezone) throws XServicesFault;
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	/**
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	 * Calculate elapsed time between two dates.
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	 * @param fromCal First date.
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	 * @param toCal Second date.
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	 * @return Elapsed time in milliseconds
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	 * @throws XServicesFault
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	 */
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	@WebMethod(operationName=OPERATION_DATETIMEDIFF)
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	public abstract BigInteger dateTimeDiff(
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			@WebParam(name="fromDateTime") @XmlElement(required=true) GregorianCalendar fromCal,
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			@WebParam(name="toDateTime") @XmlElement(required=true) GregorianCalendar toCal) throws XServicesFault;
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	/**
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	 * Fully elapsed units between two dates.
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	 * 4:15:10-4:15:55 in minutes = 0 and in seconds = 45
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	 *
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	 * @param fromCal
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	 * @param toCal
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	 * @param unit
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	 * @return Date/time difference in unit
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	 * @throws XServicesFault
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	 */
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	@WebMethod(operationName=OPERATION_DATETIMEDIFF2)
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	@WSDLDocumentation(value="Get elapsed time between to dates.")
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	public abstract BigInteger dateTimeDiff2(
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			@WebParam(name="fromDateTime") @XmlElement(required=true) GregorianCalendar fromCal,
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			@WebParam(name="toDateTime") @XmlElement(required=true) GregorianCalendar toCal,
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			@WebParam(name="PARAM_UNIT") DateTimeUnits unit) throws XServicesFault;
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	/**
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	 * Add or subtract a time span from a date.
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	 *
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	 * @param cal The initial date.
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	 * @param value The amount to add.
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	 * @param unit The unit the amount is defined in.
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	 * @return New date and time.
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	 * @throws XServicesFault
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	 *
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	 */
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	@WebMethod(operationName=OPERATION_DATEADD)
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	@WSDLDocumentation(value="Add or substract a time span from a date.")
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	public abstract GregorianCalendar dateAdd(
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			@WebParam(name=PARAM_DATETIME) @XmlElement(required=true) GregorianCalendar cal,
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			@WebParam(name="value") @XmlElement(required=true) BigInteger value,
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			@WebParam(name=PARAM_UNIT) @XmlElement(required=true) DateTimeUnits unit) throws XServicesFault;
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}