/*
    * EL4J, the Extension Library for the J2EE, adds incremental enhancements to
    * the spring framework, http://el4j.sf.net
    * Copyright (C) 2005 by ELCA Informatique SA, Av. de la Harpe 22-24,
    * 1000 Lausanne, Switzerland, http://www.elca.ch
    *
    * EL4J is published under the GNU Lesser General Public License (LGPL)
    * Version 2.1. See http://www.gnu.org/licenses/
    *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   * GNU Lesser General Public License for more details.
   *
   * For alternative licensing, please contact info@elca.ch
   */
  
  package ch.elca.el4j.tests.remoting.service.impl;
  
  import ch.elca.el4j.tests.remoting.service.Calculator;
  import ch.elca.el4j.tests.remoting.service.CalculatorException;
  import ch.elca.el4j.tests.remoting.service.CalculatorOperation;
  import ch.elca.el4j.tests.remoting.service.CalculatorValueObject;
  import ch.elca.el4j.tests.remoting.service.SpecialCalculatorException;
  
  
  /**
   * This class is the implementation of the calculator.
   *
   * @svnLink $Revision: 3873 $;$Date: 2009-08-04 13:59:45 +0200 (Di, 04. Aug 2009) $;$Author: swismer $;$URL: https://el4j.svn.sourceforge.net/svnroot/el4j/branches/el4j_3_1/el4j/framework/tests/remoting/web/jar/src/main/java/ch/elca/el4j/tests/remoting/service/impl/CalculatorImpl.java $
   *
   * @author Martin Zeltner (MZE)
   */
  public class CalculatorImpl implements Calculator {
  	/**
  	 * {@inheritDoc}
  	 */
  	public double getArea(double a, double b) {
  		return a * b;
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	public void throwMeAnException() throws CalculatorException {
  		throw new CalculatorException();
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	public void throwMeASpecialException(String action)
  		throws SpecialCalculatorException {
  		throw new SpecialCalculatorException(action);
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	public int countNumberOfUppercaseLetters(String text) {
  		if (text == null) {
  			return 0;
  		}
   
  		int numberOfUppercaseLetters = 0;
  		char[] c = text.toCharArray();
  		for (int i = 0; i < c.length; i++) {
  			if (c[i] >= 'A' && c[i] <= 'Z') {
  				numberOfUppercaseLetters++;
  			}
  		}
  		return numberOfUppercaseLetters;
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	public CalculatorValueObject echoValueObject(
  		CalculatorValueObject valueObject) {
  		return valueObject;
  	}
  	
  	/**
  	 * {@inheritDoc}
  	 */
  	public double calculate(double a, double b, CalculatorOperation operation) {
  		double result;
  		if (operation == CalculatorOperation.ADDITION) {
  			result = a + b;
  		} else if (operation == CalculatorOperation.SUBTRACTION) {
  			result = a - b;
  		} else if (operation == CalculatorOperation.MULTIPLICATION) {
  			result = a * b;
  		} else if (operation == CalculatorOperation.DIVISION) {
  			result = a / b;
  		} else {
  			throw new IllegalArgumentException(
  				"Unknown calculator operation: " + operation);
  		}
 		return result;
 	}
 }