org.jaxen.function

Class CountFunction

public class CountFunction extends Object implements Function

4.1 number count(node-set)

The count function returns the number of nodes in the argument node-set.

Author: bob mcwhirter (bob @ werken.com)

Constructor Summary
	CountFunction() Create a new `CountFunction` object.

Method Summary
Object	call(Context context, List args) Returns the number of nodes in the specified node-set.
static Double	evaluate(Object obj) Returns the number of nodes in the specified node-set.

Constructor Detail

public CountFunction()

Create a new CountFunction object.

public Object call(Context context, List args)

Returns the number of nodes in the specified node-set.

Parameters: context ignored args the function arguments

Returns: a Double giving the integral number of items in the first argument

Throws: FunctionCallException if args does not have exactly one item; or that item is not a List

public static Double evaluate(Object obj)

Returns the number of nodes in the specified node-set.

Parameters: obj a List of nodes

Returns: the integral number of items in the list

Throws: FunctionCallException if obj is not a List