v1/src/xmlpublic/org/apache/xmlbeans/GDurationSpecification.java

/*
* The Apache Software License, Version 1.1
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* Copyright (c) 2003 The Apache Software Foundation.  All rights 
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*        Apache Software Foundation (http://www.apache.org/)."
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* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 2000-2003 BEA Systems 
* Inc., <http://www.bea.com/>. For more information on the Apache Software
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package org.apache.xmlbeans;

import java.math.BigDecimal;

/**
 * Represents an XML Schema-compatible duration.
 * <p>
 * Both the immutable GDuration and the mutable GDurationBuilder are
 * GDurationSpecifications.  Use this interface where you want to
 * allow callers to pass any implementation of a GDuration.
 * 
 * @see GDuration
 */
public interface GDurationSpecification
{
    /**
     * True if this instance is immutable.
     */
    boolean isImmutable();

    /**
     * Returns the sign of the duration: +1 is forwards
     * and -1 is backwards in time.
     */
    int getSign();

    /**
     * Gets the year component.
     */
    int getYear();

    /**
     * Gets the month-of-year component.
     */
    int getMonth();

    /**
     * Gets the day-of-month component.
     */
    int getDay();

    /**
     * Gets the hour-of-day component.
     */
    int getHour();

    /**
     * Gets the minute-of-hour component.
     */
    int getMinute();

    /**
     * Gets the second-of-minute component.
     */
    int getSecond();

    /**
     * Gets the fraction-of-second. Range from 0 (inclusive) to 1 (exclusive).
     */
    BigDecimal getFraction();

    /**
     * Returns true if all of the individual components
     * of the duration are nonnegative.
     */
    boolean isValid();

    /**
     * Comparison to another GDuration.
     * <ul>
     * <li>Returns -1 if this < date. (less-than)
     * <li>Returns 0 if this == date. (equal)
     * <li>Returns 1 if this > date. (greater-than)
     * <li>Returns 2 if this <> date. (incomparable)
     * </ul>
     * Two instances are incomparable if they have different amounts
     * of information.
     */
    int compareToGDuration(GDurationSpecification duration);
}