org.ucl.xpath.function
Class FnAvg

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

public class FnAvg

extends Function

Returns the average of the values in the input sequence $arg, that is, the sum of the values divided by the number of values.

Field Summary

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

_arity, _fl, _name

Constructor Summary

FnAvg()
Constructor for FnAvg.

Method Summary

static ResultSequence	avg(java.util.Collection args) Average value operation.
ResultSequence	evaluate(java.util.Collection args) Evaluate arguments.
static ResultSequence	get_arg(java.util.Collection args) Obtain input argument for 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

FnAvg

public FnAvg()

Constructor for FnAvg.

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.

avg

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

Average value operation.

Parameters:

args - Result from the expressions evaluation.

Returns:

Result of fn:avg operation.

Throws:

DynamicError - Dynamic error.

get_arg

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

Obtain input argument for operation.

Parameters:

args - input expressions.

Returns:

Resulting expression from the operation.

Throws:

DynamicError - Dynamic error.