Field Detail

• ZERO_LENGTH_UNTYPED

  public static final UntypedAtomicValue ZERO_LENGTH_UNTYPED

Constructor Detail

• UntypedAtomicValue

  public UntypedAtomicValue​(java.lang.CharSequence value)

  Constructor

  Parameters:

  value - the String value. Null is taken as equivalent to "".

Method Detail

• copyAsSubType

  public AtomicValue copyAsSubType​(AtomicType typeLabel)

  Create a copy of this atomic value, with a different type label

  Overrides:

  copyAsSubType in class StringValue

  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.

  Overrides:

  getPrimitiveType in class StringValue

  Returns:

  the primitive type

• convertPrimitive

  public ConversionResult 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 - XPath dynamic context. Used only where the target type is one such as NCName whose definition is context-sensitive

  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​(AtomicValue other,
                       StringCollator 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