org.ucl.xpath.function
Class FnEmpty

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

public class FnEmpty

extends Function

If the value of $arg is the empty sequence, the function returns true; otherwise, the function returns false.

Field Summary

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

_arity, _fl, _name

Constructor Summary

FnEmpty()
Constructor for FnEmpty.

Method Summary

static ResultSequence	empty(java.util.Collection args) Empty operation.
ResultSequence	evaluate(java.util.Collection args) Evaluate arguments.

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

FnEmpty

public FnEmpty()

Constructor for FnEmpty.

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.

empty

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

Empty operation.

Parameters:

args - Result from the expressions evaluation.

Returns:

Result of fn:empty operation.

Throws:

DynamicError - Dynamic error.