org.ucl.xpath.function
Class FnDistinctValues

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

public class FnDistinctValues

extends Function

Returns the sequence that results from removing from $arg all but one of a set of values that are eq to one other. Values that cannot be compared, i.e. the eq operator is not defined for their types, are considered to be distinct. Values of type xdt:untypedAtomic are compared as if they were of type xs:string. The order in which the sequence of values is returned is implementation dependent.

Field Summary

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

_arity, _fl, _name

Constructor Summary

FnDistinctValues()
Constructor for FnDistinctValues.

Method Summary

static ResultSequence	distinct_values(java.util.Collection args) Distinct-values 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

FnDistinctValues

public FnDistinctValues()

Constructor for FnDistinctValues.

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.

distinct_values

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

Distinct-values operation.

Parameters:

args - Result from the expressions evaluation.

Returns:

Result of fn:distinct-values operation.

Throws:

DynamicError - Dynamic error.