Passes an additional fragment of the literal.

  Passes an additional fragment of the literal.

The application can call this method several times, then call the isValid method (or the checkValid method) to check the validity of the accumulated characters.

  Similar to the isValid method, but this method throws Exception (with possibly diagnostic information), instead of returning false.

  Similar to the isValid method, but this method throws
Exception (with possibly diagnostic information), instead of
returning false.
Throws:
- DatatypeException - If the callee supports the diagnosis and the accumulated literal is invalid, then this exception that possibly contains diagnosis information is thrown.

  Tells if the accumulated literal is valid with respect to the underlying Datatype.

  Tells if the accumulated literal is valid with respect to
the underlying Datatype.
Returns: True if it is valid. False if otherwise.