Class DurationValue

    • Field Detail

      • negative

        protected boolean negative
      • months

        protected int months
      • seconds

        protected long seconds
      • microseconds

        protected int microseconds
    • Constructor Detail

      • DurationValue

        protected DurationValue()
        Private constructor for internal use
      • DurationValue

        public DurationValue​(boolean positive,
                             int years,
                             int months,
                             int days,
                             int hours,
                             int minutes,
                             long seconds,
                             int microseconds)
                      throws java.lang.IllegalArgumentException
        Constructor for xs:duration taking the components of the duration. There is no requirement that the values are normalized, for example it is acceptable to specify months=18. The values of the individual components must all be non-negative.
        Parameters:
        positive - true if the duration is positive, false if negative. For a negative duration the components are all supplied as positive integers (or zero).
        years - the number of years
        months - the number of months
        days - the number of days
        hours - the number of hours
        minutes - the number of minutes
        seconds - the number of seconds
        microseconds - the number of microseconds
        Throws:
        java.lang.IllegalArgumentException - if the size of the duration exceeds implementation-defined limits: specifically, if the total number of months exceeds 2^31, or if the total number of seconds exceeds 2^63.
      • DurationValue

        public DurationValue​(boolean positive,
                             int years,
                             int months,
                             int days,
                             int hours,
                             int minutes,
                             long seconds,
                             int microseconds,
                             AtomicType type)
        Constructor for xs:duration taking the components of the duration, plus a user-specified type which must be a subtype of xs:duration. There is no requirement that the values are normalized, for example it is acceptable to specify months=18. The values of the individual components must all be non-negative.
        Parameters:
        positive - true if the duration is positive, false if negative. For a negative duration the components are all supplied as positive integers (or zero).
        years - the number of years
        months - the number of months
        days - the number of days
        hours - the number of hours
        minutes - the number of minutes
        seconds - the number of seconds (long to allow copying)
        microseconds - the number of microseconds
        type - the user-defined subtype of xs:duration. Note that this constructor cannot be used to create an instance of xs:dayTimeDuration or xs:yearMonthDuration.
        Throws:
        java.lang.IllegalArgumentException - if the size of the duration exceeds implementation-defined limits: specifically, if the total number of months exceeds 2^31, or if the total number of seconds exceeds 2^63.
    • Method Detail

      • normalizeZeroDuration

        protected void normalizeZeroDuration()
        Ensure that a zero duration is considered positive
      • makeDuration

        public static ConversionResult makeDuration​(java.lang.CharSequence s)
        Static factory method: create a duration value from a supplied string, in ISO 8601 format [-]PnYnMnDTnHnMnS
        Parameters:
        s - a string in the lexical space of xs:duration
        Returns:
        the constructed xs:duration value, or a ValidationFailure if the supplied string is lexically invalid.
      • badDuration

        protected static ValidationFailure badDuration​(java.lang.String msg,
                                                       java.lang.CharSequence s)
      • simpleInteger

        protected static int simpleInteger​(java.lang.String s)
        Parse a simple unsigned integer
        Parameters:
        s - the string containing the sequence of digits. No sign or whitespace is allowed.
        Returns:
        the integer. Return -1 if the string is not a sequence of digits or exceeds 2^31
      • copyAsSubType

        public AtomicValue copyAsSubType​(AtomicType typeLabel)
        Create a copy of this atomic value, with a different type label
        Specified by:
        copyAsSubType in class AtomicValue
        Parameters:
        typeLabel - the type label of the new copy. The caller is responsible for checking that the value actually conforms to this type.
        Returns:
        the copied value
      • getPrimitiveType

        public BuiltInAtomicType getPrimitiveType()
        Determine the primitive type of the value. This delivers the same answer as getItemType().getPrimitiveItemType(). The primitive types are the 19 primitive types of XML Schema, plus xs:integer, xs:dayTimeDuration and xs:yearMonthDuration, and xs:untypedAtomic. For external objects, the result is AnyAtomicType.
        Specified by:
        getPrimitiveType in class AtomicValue
        Returns:
        the primitive type
      • convertPrimitive

        public ConversionResult convertPrimitive​(BuiltInAtomicType requiredType,
                                                 boolean validate,
                                                 XPathContext context)
        Convert to target data type
        Specified by:
        convertPrimitive in class AtomicValue
        Parameters:
        requiredType - an integer identifying the required atomic type
        validate - if set to false, the caller asserts that the value is known to be valid
        context - the XPath dynamic context
        Returns:
        an AtomicValue, a value of the required type; or a ValidationFailure if the value cannot be converted.
      • normalizeDuration

        public DurationValue normalizeDuration()
        Deprecated.
        since 9.0 - the method does nothing
        Normalize the duration, so that months<12, hours<24, minutes<60, seconds<60. Since durations are now always normalized, this method has become a no-op, but is retained for backwards compatibility
        Returns:
        the duration unchanged
      • signum

        public int signum()
        Return the signum of the value
        Returns:
        -1 if the duration is negative, zero if it is zero-length, +1 if it is positive
      • getYears

        public int getYears()
        Get the year component
        Returns:
        the number of years in the normalized duration; always positive
      • getMonths

        public int getMonths()
        Get the months component
        Returns:
        the number of months in the normalized duration; always positive
      • getDays

        public int getDays()
        Get the days component
        Returns:
        the number of days in the normalized duration; always positive
      • getHours

        public int getHours()
        Get the hours component
        Returns:
        the number of hours in the normalized duration; always positive
      • getMinutes

        public int getMinutes()
        Get the minutes component
        Returns:
        the number of minutes in the normalized duration; always positive
      • getSeconds

        public int getSeconds()
        Get the seconds component
        Returns:
        the number of whole seconds in the normalized duration; always positive
      • getMicroseconds

        public int getMicroseconds()
        Get the microseconds component
        Returns:
        the number of microseconds in the normalized duration; always positive
      • getStringValue

        public java.lang.String getStringValue()
        Convert the value to a string, using the serialization rules. For atomic values this is the same as a cast; for sequence values it gives a space-separated list. This method is refined for AtomicValues so that it never throws an Exception.
        Specified by:
        getStringValue in interface Item
        Specified by:
        getStringValue in interface ValueRepresentation
        Specified by:
        getStringValue in class AtomicValue
        Returns:
        the string value of the item
        See Also:
        Item.getStringValueCS()
      • getLengthInSeconds

        public double getLengthInSeconds()
        Get length of duration in seconds, assuming an average length of month. (Note, this defines a total ordering on durations which is different from the partial order defined in XML Schema; XPath 2.0 currently avoids defining an ordering at all. But the ordering here is consistent with the ordering of the two duration subtypes in XPath 2.0.)
        Returns:
        the duration in seconds, as a double
      • getXPathComparable

        public java.lang.Object getXPathComparable​(boolean ordered,
                                                   StringCollator collator,
                                                   XPathContext context)
        Get an object value that implements the XPath equality and ordering comparison semantics for this value. If the ordered parameter is set to true, the result will be a Comparable and will support a compareTo() method with the semantics of the XPath lt/gt operator, provided that the other operand is also obtained using the getXPathComparable() method. In all cases the result will support equals() and hashCode() methods that support the semantics of the XPath eq operator, again provided that the other operand is also obtained using the getXPathComparable() method. A context argument is supplied for use in cases where the comparison semantics are context-sensitive, for example where they depend on the implicit timezone or the default collation.
        Specified by:
        getXPathComparable in class AtomicValue
        Parameters:
        ordered - true if an ordered comparison is required. In this case the result is null if the type is unordered; in other cases the returned value will be a Comparable.
        collator - collation used for comparing string values
        context - the XPath dynamic evaluation context, used in cases where the comparison is context sensitive @return an Object whose equals() and hashCode() methods implement the XPath comparison semantics with respect to this atomic value. If ordered is specified, the result will either be null if no ordering is defined, or will be a Comparable
        Returns:
        an Object whose equals() and hashCode() methods implement the XPath comparison semantics with respect to this atomic value. If ordered is specified, the result will either be null if no ordering is defined, or will be a Comparable
      • equals

        public boolean equals​(java.lang.Object other)
        Test if the two durations are of equal length.
        Specified by:
        equals in class AtomicValue
        Parameters:
        other - the other value
        Returns:
        true if the other operand is an atomic value and the two values are equal as defined by the XPath eq operator
        Throws:
        java.lang.ClassCastException - if the other value is not an xs:duration or subtype thereof
      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class java.lang.Object
      • negate

        public DurationValue negate()
        Negate a duration (same as subtracting from zero, but it preserves the type of the original duration)
        Returns:
        the original duration with its sign reversed, retaining its type
      • multiply

        public DurationValue multiply​(double factor)
                               throws XPathException
        Multiply a duration by a number
        Parameters:
        factor - the number to multiply by
        Returns:
        the result of the multiplication
        Throws:
        XPathException
      • getSchemaComparable

        public java.lang.Comparable getSchemaComparable()
        Get a Comparable value that implements the XML Schema ordering comparison semantics for this value. This implementation handles the ordering rules for durations in XML Schema. It is overridden for the two subtypes DayTimeDuration and YearMonthDuration.
        Specified by:
        getSchemaComparable in class AtomicValue
        Returns:
        a suitable Comparable
      • getSchemaComparable

        public static java.lang.Comparable getSchemaComparable​(DurationValue value)
        Get a Comparable value that implements the XML Schema ordering comparison semantics for this value. This implementation handles the ordering rules for durations in XML Schema.
        Parameters:
        value - the duration for which a comparison key is required
        Returns:
        a suitable Comparable