Package net.sf.saxon.value

Class DurationValue

    • Field Detail

      • _negative

        protected boolean _negative

      • _months

        protected int _months

      • _seconds

        protected long _seconds

      • _nanoseconds

        protected int _nanoseconds

    • 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.

        Note: For historic reasons this constructor only supports microsecond precision. To get nanosecond precision, use the constructor DurationValue(int, int, int, int, int, long, int, AtomicType).

        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.

        Note: for historic reasons this constructor was written to expect microseconds rather than nanoseconds. To supply nanoseconds, use the alternative constructor DurationValue(int, int, int, int, int, long, int, AtomicType).

        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.

      • DurationValue

        public DurationValue​(int years,
                     int months,
                     int days,
                     int hours,
                     int minutes,
                     long seconds,
                     int nanoseconds,
                     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.

        If the duration is positive, all the components must be supplied as positive (or zero) integers. If the duration is negative, all the components must be supplied as negative (or zero) integers.

        Parameters:
        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)
        nanoseconds - the number of nanoseconds
        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

      • formatFractionalSeconds

        protected static void formatFractionalSeconds​(UnicodeBuilder sb,
                                              int seconds,
                                              long nanosecs)

      • normalizeZeroDuration

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

      • makeDuration

        public static ConversionResult makeDuration​(UnicodeString 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.

      • 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 -2 if it 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

      • 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, in the range 0-11

      • 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, in the range 0-23

      • getMinutes

        public int getMinutes()
        Get the minutes component
        Returns:
        the number of minutes in the normalized duration; always positive, in the range 0-59

      • getSeconds

        public int getSeconds()
        Get the seconds component
        Returns:
        the number of whole seconds in the normalized duration; always positive, in the range 0-59

      • getMicroseconds

        public int getMicroseconds()
        Get the microseconds component
        Returns:
        the number of nanoseconds in the normalized duration, divided by one thousand and rounded down; always positive, in the range 0-999999

      • getNanoseconds

        public int getNanoseconds()
        Get the nanoseconds component
        Returns:
        the number of nanoseconds in the normalized duration; always positive, in the range 0-999,999,999

      • getTotalMonths

        public int getTotalMonths()
        Get the total number of months (ignoring the days/hours/minutes/seconds)
        Returns:
        the total number of months, that is (getYears()*12) + getMonths(), as a positive or negative number according as the duration is positive or negative

      • getTotalSeconds

        public java.math.BigDecimal getTotalSeconds()
        Get the total number of seconds (ignoring the years/months)
        Returns:
        the total number of seconds, as a positive or negative number according as the duration is positive or negative, with the fractional part indicating parts of a second to nanosecond precision

      • 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

      • getComponent

        public AtomicValue getComponent​(AccessorFn.Component component)
        Get a component of the normalized value
        Overrides:
        getComponent in class AtomicValue
        Parameters:
        component - the required component
        Returns:
        the value of the requested component of this value

      • getXPathMatchKey

        public AtomicMatchKey getXPathMatchKey​(StringCollator collator,
                                       int implicitTimezone)
        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:
        getXPathMatchKey in class AtomicValue
        Parameters:
        collator - collation used for comparing string values
        implicitTimezone - the XPath dynamic evaluation context, used in cases where the comparison is context
        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

      • getXPathComparable

        public XPathComparable getXPathComparable​(StringCollator collator,
                                          int implicitTimezone)
                                   throws NoDynamicContextException
        Description copied from class: AtomicValue
        Get an object value that implements the XPath equality and ordering comparison semantics for this value. A collation is supplied for comparing strings, and an implicit timezone for comparing date/time values that have no saved timezone. An atomic value may return itself as the result, provided that its ordering rules are independent of the collation and timezone, and provided that it implements the XPathComparable interface: which means that its compareTo, equals, and hashCode methods must be compatible with the rules for XPath value comparisons.
        Specified by:
        getXPathComparable in class AtomicValue
        Parameters:
        collator - the collation to be used when comparing strings
        implicitTimezone - the implicit timezone in the dynamic context, used when comparing dates/times with and without timezone
        Returns:
        an Object that implements the XPath value comparison semantics with respect to this atomic value. For an atomic type that is not ordered (according to XPath rules), return null.
        Throws:
        NoDynamicContextException - if the supplied implicit timezone is "NO_TIMEZONE" (meaning unknown), and the implicit timezone is actually required because the value in question is a date/time value with no timezone. This can cause a failure to evaluate expressions statically (because the implicit timezone is not known statically), and it will then be caught, meaning that the expression has to be evaluated dynamically.

      • equals

        public boolean equals​(java.lang.Object other)
        Test if the two durations are of equal length.
        Overrides:
        equals in class AtomicValue
        Parameters:
        other - the other value
        Returns:
        true (in a subclass) 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()
        Description copied from class: AtomicValue
        Returns a hash code value for the object.
        Overrides:
        hashCode in class AtomicValue

      • subtract

        public DurationValue subtract​(DurationValue other)
                       throws XPathException
        Subtract two durations
        Parameters:
        other - the duration to be subtracted from this one
        Returns:
        the difference of the two durations
        Throws:
        XPathException - if an error is detected

      • 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​(long factor)
                       throws XPathException
        Multiply a duration by an integer
        Parameters:
        factor - the number to multiply by
        Returns:
        the result of the multiplication
        Throws:
        XPathException - if an error is detected

      • multiply

        public DurationValue multiply​(double factor)
                       throws XPathException
        Multiply a duration by a double
        Parameters:
        factor - the number to multiply by
        Returns:
        the result of the multiplication
        Throws:
        XPathException - if an error is detected

      • multiply

        public DurationValue multiply​(java.math.BigDecimal factor)
                       throws XPathException
        Multiply a duration by a decimal
        Parameters:
        factor - the number to multiply by
        Returns:
        the result of the multiplication
        Throws:
        XPathException - if an error is detected

      • divide

        public DurationValue divide​(double factor)
                     throws XPathException
        Divide a duration by a number
        Parameters:
        factor - the number to divide by
        Returns:
        the result of the division
        Throws:
        XPathException - if an error is detected

      • getSchemaComparable

        public DurationValue.DurationComparable 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.
        Returns:
        a suitable Comparable