Class UntypedAtomicValue

  • All Implemented Interfaces:
    java.io.Serializable, Expression, Item, ValueRepresentation

    public class UntypedAtomicValue
    extends StringValue
    An Untyped Atomic value. This inherits from StringValue for implementation convenience, even though an untypedAtomic value is not a String in the data model type hierarchy.
    See Also:
    Serialized Form
    • Constructor Detail

      • UntypedAtomicValue

        public UntypedAtomicValue​(java.lang.CharSequence value)
        Constructor
        Parameters:
        value - the String value. Null is taken as equivalent to "".
    • Method Detail

      • convertPrimitive

        public AtomicValue convertPrimitive​(BuiltInAtomicType requiredType,
                                            boolean validate,
                                            XPathContext context)
        Convert to target data type
        Overrides:
        convertPrimitive in class StringValue
        Parameters:
        requiredType - type code of the required atomic type
        validate - true if validation is required. If set to false, the caller guarantees that the value is valid for the target data type, and that further validation is therefore not required. Note that a validation failure may be reported even if validation was not requested.
        context - The conversion context to be used. This is required at present only when converting to a date or time: it provides the implicit timezone.
        Returns:
        the result of the conversion, if successful. If unsuccessful, the value returned will be a ValidationErrorValue. The caller must check for this condition. No exception is thrown, instead the exception will be encapsulated within the ErrorValue.
      • compareTo

        public int compareTo​(java.lang.Object other,
                             java.util.Comparator collator,
                             XPathContext context)
        Compare an untypedAtomic value with another value, using a given collator to perform any string comparisons. This works by converting the untypedAtomic value to the type of the other operand, which is the correct behavior for operators like "=" and "!=", but not for "eq" and "ne": in the latter case, the untypedAtomic value is converted to a string and this method is therefore not used.
        Returns:
        -1 if the this value is less than the other, 0 if they are equal, +1 if this value is greater.
        Throws:
        java.lang.ClassCastException - if the value cannot be cast to the type of the other operand