org.ucl.xpath.function
Class FnNilled

java.lang.Object
  org.ucl.xpath.function.Function
      org.ucl.xpath.function.FnNilled

public class FnNilled

extends Function

Returns an xs:boolean indicating whether the argument node is "nilled". If the argument is not an element node, returns the empty sequence.

Field Summary

Fields inherited from class org.ucl.xpath.function.Function

_arity, _fl, _name

Constructor Summary

FnNilled()
Constructor for FnNilled.

Method Summary

ResultSequence	evaluate(java.util.Collection args) Evaluate arguments.
static java.util.Collection	expected_args() Obtain a list of expected arguments.
static ResultSequence	nilled(java.util.Collection args) Nilled operation.

Methods inherited from class org.ucl.xpath.function.Function

arity, convert_argument, convert_arguments, dynamic_context, name, set_function_library, signature, signature, signature, static_context

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FnNilled

public FnNilled()

Constructor for FnNilled.

Method Detail

evaluate

public ResultSequence evaluate(java.util.Collection args)
                        throws DynamicError

Evaluate arguments.

Specified by:

evaluate in class Function

Parameters:

args - argument expressions.

Returns:

Result of evaluation.

Throws:

DynamicError - Dynamic error.

nilled

public static ResultSequence nilled(java.util.Collection args)
                             throws DynamicError

Nilled operation.

Parameters:

args - Result from the expressions evaluation.

Returns:

Result of fn:nilled operation.

Throws:

DynamicError - Dynamic error.

expected_args

public static java.util.Collection expected_args()

Obtain a list of expected arguments.

Returns:

Result of operation.