net.christopherschultz.evaluator.function
Class CountMatchesFunction

java.lang.Object
  net.christopherschultz.evaluator.StandardFunction
      net.christopherschultz.evaluator.function.CountMatchesFunction

All Implemented Interfaces:

Function

public class CountMatchesFunction
extends StandardFunction

Returns the number (int) of arguments that appear in the first (array or list) argument.

Usage: countMatches(a:array or list, element1, element2, ... elementN)

Version:

$Revision: 1.2 $ $Date: 2008-06-20 22:58:48 $

Author:

Chris Schultz

Constructor Summary

CountMatchesFunction()

Method Summary

Object

call(EvaluationContext ec, String functionName, Object[] args) Calls this function with standard argument evaluation semantics.

Methods inherited from class net.christopherschultz.evaluator.StandardFunction

call, getExpressionValue, getExpressionValueArray, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

CountMatchesFunction

public CountMatchesFunction()

Method Detail

call

public Object call(EvaluationContext ec,
                   String functionName,
                   Object[] args)
            throws EvaluationException

Description copied from class: StandardFunction

Calls this function with standard argument evaluation semantics.

Specified by:

call in class StandardFunction

Parameters:

ec - The EvaluationContext in which this function is being called.

functionName - The name of the function being invoked.

args - The argument values to pass to this function.

Returns:

The result of the function.

Throws:

EvaluationException - If there is an error during function execution.