package org.apidesign.apifest08.currency;

 public final class CurrencyRateFactory {

     //Singleton

     private static CurrencyRateFactory thisFactory = new CurrencyRateFactory();

     private CurrencyRateFactory() {};

     public static CurrencyRateFactory getInstance() {

         return thisFactory;

     }

     public CurrencyRate createCurrencyRate(final String currency1, final String currency2, final Rate rate) {

         return new CurrencyRateImpl(currency1, currency2, rate);

     }

     public CurrencyRate createCurrencyRate(final String currency1, final String currency2, int amount1, int amount2) {

         return new CurrencyRateImpl(currency1, currency2, new Rate(amount1, amount2));

     }

     public CurrencyRate createCurrencyRate(final String currency1, final String currency2, double amount1, double amount2) {

         return new CurrencyRateImpl(currency1, currency2, new Rate(amount1, amount2));

     }

 }