package org.apidesign.apifest08.currency;

 /**

  * Static exchange rate provider.

  * 

  * @author ked

  */

 final class StaticExchangeRateProvider<AmountType, IdentifierType> implements ExchangeRateProvider<AmountType, IdentifierType> {

     final ExchangeRateValue<AmountType, IdentifierType> exchangeRate;

     private StaticExchangeRateProvider(ExchangeRateValue<AmountType, IdentifierType> exchangeRate) {

         this.exchangeRate = exchangeRate;

     }

     public void getExchangeRate(ExchangeRateRequest<AmountType, IdentifierType> request, ExchangeRateResponse<AmountType, IdentifierType> response) {

         response.setExchangeRate(exchangeRate);

     }

     static <AmountType, IdentifierType> StaticExchangeRateProvider<AmountType, IdentifierType> getStaticExchangeRateProvider(ExchangeRateValue<AmountType, IdentifierType> exchangeRate) {

         return new StaticExchangeRateProvider<AmountType, IdentifierType>(exchangeRate);

     }

     @Override

     public boolean equals(Object obj) {

         if (obj == null) {

             return false;

         }

         if (getClass() != obj.getClass()) {

             return false;

         }

         final StaticExchangeRateProvider other = (StaticExchangeRateProvider) obj;

         if (this.exchangeRate != other.exchangeRate && (this.exchangeRate == null || !this.exchangeRate.equals(other.exchangeRate))) {

             return false;

         }

         return true;

     }

     @Override

     public int hashCode() {

         int hash = 7;

         hash = 67 * hash + (this.exchangeRate != null ? this.exchangeRate.hashCode() : 0);

         return hash;

     }

 }