Class CountFunction

java.lang.Object
org.jaxen.function.CountFunction
All Implemented Interfaces:
Function

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.
See Also:
  • Constructor Details

    • CountFunction

      public CountFunction()
      Create a new CountFunction object.
  • Method Details

    • call

      public Object call(Context context, List args) throws FunctionCallException

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

      Specified by:
      call in interface Function
      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
    • evaluate

      public static Double evaluate(Object obj) throws FunctionCallException

      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