https://xerces.apache.org/xerces2-j/: Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family. This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is the reference implementation of XNI but other parser components, configurations, and parsers can be written using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual. Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema 1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that it does not yet provide an option to enable normalization checking as described in section 2.13 of this specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use. 
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 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.xerces.xs.datatypes;

import javax.xml.datatype.Duration;
import javax.xml.datatype.XMLGregorianCalendar;


Interface to expose the values for all date-time related types. The following 
table shows the methods defined for various XML Schema 1.0 built-in types. 'X' 
marks whether a particular method is defined for a particular type. Accessing undefined
methods may return unexpected values.






 XML Schema Datatype 
 getYears() 
 getMonths() 
 getDays() 
 getHours() 
 getMinutes() 
 getSeconds() 
 getTimeZoneHours() 
 getTimeZoneMinutes() 
 getXMLGregorianCalendar() 
 getDuration() 
 hasTimeZone() 
 normalize() 
 isNormalized() 
 getLexicalValue() 




 gYear 
X
-
-
-
-
-
X
X
X
-
X
X
X
X




 gMonth 
-
X
-
-
-
-
X
X
X
-
X
X
X
X




 gDay 
-
-
X
-
-
-
X
X
X
-
X
X
X
X




 gYearMonth 
X
X
-
-
-
-
X
X
X
-
X
X
X
X




 gMonthDay 
-
X
X
-
-
-
X
X
X
-
X
X
X
X




 date 
X
X
X
-
-
-
X
X
X
-
X
X
X
X




 time 
-
-
-
X
X
X
X
X
X
-
X
X
X
X




 datetime 
X
X
X
X
X
X
X
X
X
-
X
X
X
X




 duration 
-
X
-
-
-
X
-
-
-
X
-
-
-
X







Author:Ankit Pasricha, IBM
Version:$Id: XSDateTime.java 447250 2006-09-18 05:27:17Z mrglavas $
/**
 * <p>Interface to expose the values for all date-time related types. The following 
 * table shows the methods defined for various XML Schema 1.0 built-in types. 'X' 
 * marks whether a particular method is defined for a particular type. Accessing undefined
 * methods may return unexpected values.
 * 
 * <table border="1">
 * <br/>
 * <tr>
 * <td> XML Schema Datatype </td>
 * <td> getYears() </td>
 * <td> getMonths() </td>
 * <td> getDays() </td>
 * <td> getHours() </td>
 * <td> getMinutes() </td>
 * <td> getSeconds() </td>
 * <td> getTimeZoneHours() </td>
 * <td> getTimeZoneMinutes() </td>
 * <td> getXMLGregorianCalendar() </td>
 * <td> getDuration() </td>
 * <td> hasTimeZone() </td>
 * <td> normalize() </td>
 * <td> isNormalized() </td>
 * <td> getLexicalValue() </td>
 * </tr>
 * <tr>
 * <td> gYear </td>
 * <td>X</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * </tr>
 * <tr>
 * <td> gMonth </td>
 * <td>-</td>
 * <td>X</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * </tr>
 * <tr>
 * <td> gDay </td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * </tr>
 * <tr>
 * <td> gYearMonth </td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * </tr>
 * <tr>
 * <td> gMonthDay </td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * </tr>
 * <tr>
 * <td> date </td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * </tr>
 * <tr>
 * <td> time </td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * </tr>
 * <tr>
 * <td> datetime </td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>-</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * <td>X</td>
 * </tr>
 * <tr>
 * <td> duration </td>
 * <td>-</td>
 * <td>X</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * <td>-</td>
 * <td>-</td>
 * <td>-</td>
 * <td>X</td>
 * </tr>
 * </table>
 * </p>
 * 
 * @author Ankit Pasricha, IBM
 * 
 * @version $Id: XSDateTime.java 447250 2006-09-18 05:27:17Z mrglavas $
 */
public interface XSDateTime {
	
    
Returns:years - can be negative for date-time related types;
/**
     * @return years - can be negative for date-time related types;
     *          
     */
    public int getYears();
    
    
Returns:months - can be negative only for duration types;
                 For duration types, it returns years*12 + months
/**
     * @return months - can be negative only for duration types;
     *                  For duration types, it returns years*12 + months
     */
    public int getMonths();
    
    
Returns:days - cannot be negative;
/**
     * @return days - cannot be negative;
     *          
     */
    public int getDays();
    
    
Returns:hours - cannot be negative;
/**
     * @return hours - cannot be negative;
     *          
     */
    public int getHours();
    
    
Returns:minutes - cannot be negative;
/**
     * @return minutes - cannot be negative;
     *          
     */
    public int getMinutes();
    
    
Returns:seconds - can be negative only for durations;
                  For duration types, it returns days*24*3600 + hours*3600 
                                                 + minutes*60 + seconds
/**
     * @return seconds - can be negative only for durations;
     *                   For duration types, it returns days*24*3600 + hours*3600 
     *                                                  + minutes*60 + seconds 
     */
    public double getSeconds();
    
    
Returns:boolean (true when timezone is specified in the original lexical value)
/**
     * @return boolean (true when timezone is specified in the original lexical value)
     *                  
     */
    public boolean hasTimeZone();
    
    
Returns:timezone hours (for GMT-xx:xx this will be negative),
/**
     * @return timezone hours (for GMT-xx:xx this will be negative),
     *                          
     */
    public int getTimeZoneHours();
    
    
Returns:timezone minutes (for GMT-xx:xx this will be negative),
/**
     * @return timezone minutes (for GMT-xx:xx this will be negative),
     *                          
     */
    public int getTimeZoneMinutes();
    
    
Returns:the original lexical value
/**
     * @return the original lexical value
     */
    public String getLexicalValue();
    
    
Returns:a new date-time related object with normalized values
        (has no effect on objects already
         normalized)
/**
     * @return a new date-time related object with normalized values
     *         (has no effect on objects already
     *          normalized)
     */
    public XSDateTime normalize();
    
    
Returns:whether a date-time related object is normalized or not
        (value is not useful for types where timezone is not specified)
/**
     * @return whether a date-time related object is normalized or not
     *         (value is not useful for types where timezone is not specified)
     */
    public boolean isNormalized();
       
    
Returns:an un-normalized XMLGregorianCalendar (if applicable otherwise null)
/**
     * @return an un-normalized XMLGregorianCalendar (if applicable otherwise null)
     */
    public XMLGregorianCalendar getXMLGregorianCalendar();
        
    
Returns:a Duration (if applicable otherwise null)
/**
     * @return a Duration (if applicable otherwise null)
     */
    public Duration getDuration();
}