| /* |
| * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.org.apache.xerces.internal.jaxp.datatype; |
| |
| import java.math.BigInteger; |
| import javax.xml.datatype.DatatypeConstants; |
| |
| |
| /** |
| * <p>Represent a subtype <code>xdt:yearMonthDuration</code> of a <code>Duration</code> |
| * as specified in <a href="http://www.w3.org/TR/xpath-datamodel#yearMonthDuration"> |
| * XQuery 1.0 and XPath 2.0 Data Model, xdt:yearMonthDuration</a>.</p> |
| * |
| * |
| * <p>The DurationYearMonth object represents a period of Gregorian time, |
| * with a lexical representation, "<em>PnYnM</em>" that contains only year and month components. |
| * </p> |
| * |
| * |
| * @author <a href="mailto:Vikram.Aroskar@Sun.COM">Vikram Aroskar</a> |
| * @author <a href="mailto:Huizhe.wang@oracle.com">Joe Wang</a> |
| * @version $Revision: 1.1 $, $Date: 2010/05/19 05:02:55 $ |
| |
| * @see XMLGregorianCalendar#add(Duration) |
| */ |
| |
| class DurationYearMonthImpl |
| extends DurationImpl { |
| |
| |
| /** |
| * <p>Constructs a new Duration object by specifying each field individually.</p> |
| * |
| * <p>All the parameters are optional as long as at least one field is present. |
| * If specified, parameters have to be zero or positive.</p> |
| * |
| * @param isPositive Set to <code>false</code> to create a negative duration. When the length |
| * of the duration is zero, this parameter will be ignored. |
| * @param years of this <code>Duration</code> |
| * @param months of this <code>Duration</code> |
| * |
| * @throws IllegalArgumentException |
| * If years, months parameters are all <code>null</code>. Or if any |
| * of those parameters are negative. |
| */ |
| public DurationYearMonthImpl( |
| boolean isPositive, |
| BigInteger years, |
| BigInteger months) { |
| |
| super(isPositive, years, months, null, null, null, null); |
| convertToCanonicalYearMonth(); |
| } |
| /** |
| * <p>Construct a <code>Duration</code> of type <code>xdt:yearMonthDuration</code> using the specified |
| * <code>year</code> and <code>month</code> as defined in |
| * <a href="http://www.w3.org/TR/xpath-datamodel#yearMonthDuration"> |
| * XQuery 1.0 and XPath 2.0 Data Model, xdt:yearMonthDuration</a>.</p> |
| * |
| * <p>A {@link DatatypeConstants#FIELD_UNDEFINED} value indicates that field is not set.</p> |
| * |
| * @param isPositive Set to <code>false</code> to create a negative duration. When the length |
| * of the duration is zero, this parameter will be ignored. |
| * @param year Year of <code>Duration</code>. |
| * @param month Month of <code>Duration</code>. |
| * |
| * @throws IllegalArgumentException If the values are not a valid representation of a |
| * <code>Duration</code>: if any of the fields (year, month) is negative. |
| */ |
| protected DurationYearMonthImpl( |
| final boolean isPositive, |
| final int years, |
| final int months) { |
| |
| this(isPositive, |
| wrap(years), |
| wrap(months)); |
| |
| |
| } |
| |
| |
| /** |
| * <p>Construct a <code>Duration</code> of type <code>xdt:yearMonthDuration</code> using the specified milliseconds as defined in |
| * <a href="http://www.w3.org/TR/xpath-datamodel#yearMonthDuration"> |
| * XQuery 1.0 and XPath 2.0 Data Model, xdt:yearMonthDuration</a>.</p> |
| * |
| * <p>The datatype <code>xdt:yearMonthDuration</code> is a subtype of <code>xs:duration</code> |
| * whose lexical representation contains only year and month components. |
| * This datatype resides in the namespace {@link javax.xml.XMLConstants#W3C_XPATH_DATATYPE_NS_URI}.</p> |
| * |
| * <p>Both values are set by computing their values from the specified milliseconds |
| * and are availabe using the <code>get</code> methods of the created {@link Duration}. |
| * The values conform to and are defined by:</p> |
| * <ul> |
| * <li>ISO 8601:2000(E) Section 5.5.3.2 Alternative format</li> |
| * <li><a href="http://www.w3.org/TR/xmlschema-2/#isoformats"> |
| * W3C XML Schema 1.0 Part 2, Appendix D, ISO 8601 Date and Time Formats</a> |
| * </li> |
| * <li>{@link XMLGregorianCalendar} Date/Time Datatype Field Mapping Between XML Schema 1.0 and Java Representation</li> |
| * </ul> |
| * |
| * <p>The default start instance is defined by {@link GregorianCalendar}'s use of the start of the epoch: i.e., |
| * {@link java.util.Calendar#YEAR} = 1970, |
| * {@link java.util.Calendar#MONTH} = {@link java.util.Calendar#JANUARY}, |
| * {@link java.util.Calendar#DATE} = 1, etc. |
| * This is important as there are variations in the Gregorian Calendar, |
| * e.g. leap years have different days in the month = {@link java.util.Calendar#FEBRUARY} |
| * so the result of {@link Duration#getMonths()} can be influenced.</p> |
| * |
| * <p>Any remaining milliseconds after determining the year and month are discarded.</p> |
| * |
| * @param durationInMilliseconds Milliseconds of <code>Duration</code> to create. |
| */ |
| protected DurationYearMonthImpl(long durationInMilliseconds) { |
| |
| super(durationInMilliseconds); |
| convertToCanonicalYearMonth(); |
| //Any remaining milliseconds after determining the year and month are discarded. |
| days = null; |
| hours = null; |
| minutes = null; |
| seconds = null; |
| signum = calcSignum((signum<0)?false:true); |
| } |
| |
| |
| /** |
| * <p>Construct a <code>Duration</code> of type <code>xdt:yearMonthDuration</code> by parsing its <code>String</code> representation, |
| * "<em>PnYnM</em>", <a href="http://www.w3.org/TR/xpath-datamodel#yearMonthDuration"> |
| * XQuery 1.0 and XPath 2.0 Data Model, xdt:yearMonthDuration</a>.</p> |
| * |
| * <p>The datatype <code>xdt:yearMonthDuration</code> is a subtype of <code>xs:duration</code> |
| * whose lexical representation contains only year and month components. |
| * This datatype resides in the namespace {@link javax.xml.XMLConstants#W3C_XPATH_DATATYPE_NS_URI}.</p> |
| * |
| * <p>Both values are set and availabe from the created {@link Duration}</p> |
| * |
| * <p>The XML Schema specification states that values can be of an arbitrary size. |
| * Implementations may chose not to or be incapable of supporting arbitrarily large and/or small values. |
| * An {@link UnsupportedOperationException} will be thrown with a message indicating implementation limits |
| * if implementation capacities are exceeded.</p> |
| * |
| * @param lexicalRepresentation Lexical representation of a duration. |
| * |
| * @throws IllegalArgumentException If <code>lexicalRepresentation</code> is not a valid representation of a <code>Duration</code> expressed only in terms of years and months. |
| * @throws UnsupportedOperationException If implementation cannot support requested values. |
| * @throws NullPointerException If <code>lexicalRepresentation</code> is <code>null</code>. |
| */ |
| protected DurationYearMonthImpl(String lexicalRepresentation) { |
| super(lexicalRepresentation); |
| if (getDays() > 0 || getHours() > 0 |
| || getMinutes() > 0 || getSeconds() > 0) { |
| throw new IllegalArgumentException( |
| "Trying to create an xdt:yearMonthDuration with an invalid" |
| + " lexical representation of \"" + lexicalRepresentation |
| + "\", data model requires PnYnM."); |
| } |
| convertToCanonicalYearMonth(); |
| } |
| |
| /** |
| * The value space of xs:yearMonthDuration is the set of xs:integer month values. |
| * @return the value of yearMonthDuration |
| */ |
| public int getValue() { |
| return getYears() * 12 + getMonths(); |
| } |
| |
| private void convertToCanonicalYearMonth() { |
| while (getMonths() >= 12) |
| { |
| months = months.subtract(BigInteger.valueOf(12)); |
| years = BigInteger.valueOf((long) getYears()).add(BigInteger.ONE); |
| } |
| } |
| } |
