Package net.sf.saxon.value

Class BigDecimalValue

    • Field Detail

      • BIG_DECIMAL_ONE_MILLION

        public static final java.math.BigDecimal BIG_DECIMAL_ONE_MILLION

      • BIG_DECIMAL_ONE_BILLION

        public static final java.math.BigDecimal BIG_DECIMAL_ONE_BILLION

      • MAX_INT

        public static final java.math.BigDecimal MAX_INT

    • Constructor Detail

      • BigDecimalValue

        public BigDecimalValue​(java.math.BigDecimal value)
        Constructor supplying a BigDecimal
        Parameters:
        value - the value of the DecimalValue

      • BigDecimalValue

        public BigDecimalValue​(java.math.BigDecimal value,
                       AtomicType typeLabel)
        Constructor supplying a BigDecimal and a type label
        Parameters:
        value - the value of the DecimalValue
        typeLabel - the type label, which must be a subtype of DECIMAL

      • BigDecimalValue

        public BigDecimalValue​(double in)
                throws ValidationException
        Constructor supplying a double
        Parameters:
        in - the value of the DecimalValue
        Throws:
        ValidationException - if the supplied value cannot be converted, typically because it is INF or NaN.

      • BigDecimalValue

        public BigDecimalValue​(long in)
        Constructor supplying a long integer
        Parameters:
        in - the value of the DecimalValue

    • Method Detail

      • makeDecimalValue

        public static ConversionResult makeDecimalValue​(java.lang.String in,
                                                boolean validate)
        Factory method to construct a DecimalValue from a string
        Parameters:
        in - the value of the DecimalValue
        validate - true if validation is required; false if the caller knows that the value is valid
        Returns:
        the required DecimalValue if the input is valid, or a ValidationFailure encapsulating the error message if not.

      • parse

        public static BigDecimalValue parse​(java.lang.CharSequence in)
                             throws java.lang.NumberFormatException
        Factory method to construct a DecimalValue from a string, throwing an unchecked exception if the value is invalid
        Parameters:
        in - the lexical representation of the DecimalValue
        Returns:
        the required DecimalValue
        Throws:
        java.lang.NumberFormatException - if the value is invalid

      • castableAsDecimal

        public static boolean castableAsDecimal​(java.lang.String in)
        Test whether a string is castable to a decimal value
        Parameters:
        in - the string to be tested
        Returns:
        true if the string has the correct format for a decimal

      • 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

      • getDoubleValue

        public double getDoubleValue()
        Get the numeric value as a double
        Specified by:
        getDoubleValue in class NumericValue
        Returns:
        A double representing this numeric value; NaN if it cannot be converted

      • getFloatValue

        public float getFloatValue()
        Get the numeric value converted to a float
        Specified by:
        getFloatValue in class NumericValue
        Returns:
        a float representing this numeric value; NaN if it cannot be converted

      • longValue

        public long longValue()
               throws XPathException
        Return the numeric value as a Java long.
        Specified by:
        longValue in class NumericValue
        Returns:
        the numeric value as a Java long. This performs truncation towards zero.
        Throws:
        XPathException - if the value cannot be converted

      • getDecimalValue

        public java.math.BigDecimal getDecimalValue()
        Get the value
        Specified by:
        getDecimalValue in class DecimalValue
        Returns:
        the BigDecimal representation of the value

      • hashCode

        public int hashCode()
        Get the hashCode. This must conform to the rules for other NumericValue hashcodes
        Specified by:
        hashCode in class NumericValue
        Returns:
        the hash code of the numeric value
        See Also:
        NumericValue.hashCode()

      • effectiveBooleanValue

        public boolean effectiveBooleanValue()
        Description copied from class: NumericValue
        Get the effective boolean value of the value. This override of this method throws no exceptions.
        Specified by:
        effectiveBooleanValue in interface GroundedValue
        Specified by:
        effectiveBooleanValue in class NumericValue
        Returns:
        true, unless the value is boolean false, numeric zero, or zero-length string

      • getCanonicalLexicalRepresentation

        public UnicodeString getCanonicalLexicalRepresentation()
        Get the canonical lexical representation as defined in XML Schema. This is not always the same as the result of casting to a string according to the XPath rules. For xs:decimal, the canonical representation always contains a decimal point.
        Specified by:
        getCanonicalLexicalRepresentation in interface AtomicSequence
        Overrides:
        getCanonicalLexicalRepresentation in class AtomicValue
        Returns:
        the canonical lexical representation

      • decimalToString

        public static java.lang.StringBuilder decimalToString​(java.math.BigDecimal value,
                                                      java.lang.StringBuilder fsb)
        Convert a decimal value to a string, using the XPath rules for formatting
        Parameters:
        value - the decimal value to be converted
        fsb - the StringBuilder to which the value is to be appended
        Returns:
        the supplied StringBuilder, suitably populated

      • negate

        public NumericValue negate()
        Negate the value
        Specified by:
        negate in class NumericValue
        Returns:
        a value, of the same type as the original, with its sign inverted

      • floor

        public NumericValue floor()
        Implement the XPath floor() function
        Specified by:
        floor in class NumericValue
        Returns:
        a value, of the same type as that supplied, rounded towards minus infinity

      • ceiling

        public NumericValue ceiling()
        Implement the XPath ceiling() function
        Specified by:
        ceiling in class NumericValue
        Returns:
        a value, of the same type as that supplied, rounded towards plus infinity

      • round

        public NumericValue round​(int scale)
        Implement the XPath round() function
        Specified by:
        round in class NumericValue
        Parameters:
        scale - the number of decimal places required in the result (supply 0 for rounding to an integer)
        Returns:
        a value, of the same type as that supplied, rounded towards the nearest whole number (0.5 rounded up)

      • roundHalfToEven

        public NumericValue roundHalfToEven​(int scale)
        Implement the XPath round-half-to-even() function
        Specified by:
        roundHalfToEven in class NumericValue
        Parameters:
        scale - the decimal position for rounding: e.g. 2 rounds to a multiple of 0.01, while -2 rounds to a multiple of 100
        Returns:
        a value, of the same type as the original, rounded towards the nearest multiple of 10**(-scale), with rounding towards the nearest even number if two values are equally near

      • signum

        public int signum()
        Determine whether the value is negative, zero, or positive
        Specified by:
        signum in class NumericValue
        Returns:
        -1 if negative, 0 if zero, +1 if positive, NaN if NaN

      • isWholeNumber

        public boolean isWholeNumber()
        Determine whether the value is a whole number, that is, whether it compares equal to some integer
        Specified by:
        isWholeNumber in class NumericValue
        Returns:
        true if the value is a whole number

      • asSubscript

        public int asSubscript()
        Test whether a number is a possible subscript into a sequence, that is, a whole number greater than zero and less than 2^31
        Specified by:
        asSubscript in class NumericValue
        Returns:
        the number as an int if it is a possible subscript, or -1 otherwise

      • abs

        public NumericValue abs()
        Get the absolute value as defined by the XPath abs() function
        Specified by:
        abs in class NumericValue
        Returns:
        the absolute value
        Since:
        9.2

      • getXPathComparable

        public XPathComparable getXPathComparable​(StringCollator collator,
                                          int implicitTimezone)
        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.
        Overrides:
        getXPathComparable in class NumericValue
        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.

      • compareTo

        public int compareTo​(XPathComparable other)
        Compare the value to another numeric value
        Specified by:
        compareTo in interface java.lang.Comparable<XPathComparable>
        Overrides:
        compareTo in class NumericValue
        Parameters:
        other - The other numeric value
        Returns:
        -1 if this one is the lower, 0 if they are numerically equal, +1 if this one is the higher, or if either value is NaN. Where NaN values are involved, they should be handled by the caller before invoking this method.

      • compareTo

        public int compareTo​(long other)
        Compare the value to a long
        Specified by:
        compareTo in class NumericValue
        Parameters:
        other - the value to be compared with
        Returns:
        -1 if this is less, 0 if this is equal, +1 if this is greater or if this is NaN

      • isIdentical

        public boolean isIdentical​(AtomicValue v)
        Determine whether two atomic values are identical, as determined by XML Schema rules. This is a stronger test than equality (even schema-equality); for example two dateTime values are not identical unless they are in the same timezone.

        Note that even this check ignores the type annotation of the value. The integer 3 and the short 3 are considered identical, even though they are not fully interchangeable. "Identical" means the same point in the value space, regardless of type annotation.

        NaN is identical to itself.

        Overrides:
        isIdentical in class AtomicValue
        Parameters:
        v - the other value to be compared with this one
        Returns:
        true if the two values are identical, false otherwise.