/*

  *  Copyright 2009-2013 Stephen Colebourne

  *

  *  Licensed under the Apache License, Version 2.0 (the "License");

  *  you may not use this file except in compliance with the License.

  *  You may obtain a copy of the License at

  *

  *      http://www.apache.org/licenses/LICENSE-2.0

  *

  *  Unless required by applicable law or agreed to in writing, software

  *  distributed under the License is distributed on an "AS IS" BASIS,

  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  *  See the License for the specific language governing permissions and

  *  limitations under the License.

  */

 package org.joda.money;

 /**

  * Exception thrown when a monetary operation fails due to mismatched currencies.

  * <p>

  * For example, this exception would be thrown when trying to add a monetary

  * value in one currency to a monetary value in a different currency.

  * <p>

  * This exception makes no guarantees about immutability or thread-safety.

  */

 public class CurrencyMismatchException extends IllegalArgumentException {

     /** Serialization lock. */

     private static final long serialVersionUID = 1L;

     /** First currency. */

     private final CurrencyUnit firstCurrency;

     /** Second currency. */

     private final CurrencyUnit secondCurrency;

     /**

      * Constructor.

      * 

      * @param firstCurrency  the first currency, may be null

      * @param secondCurrency  the second currency, not null

      */

     public CurrencyMismatchException(CurrencyUnit firstCurrency, CurrencyUnit secondCurrency) {

         super("Currencies differ: " +

                 (firstCurrency != null ? firstCurrency.getCode() : "null") + '/' +

                 (secondCurrency != null ? secondCurrency.getCode() : "null"));

         this.firstCurrency = firstCurrency;

         this.secondCurrency = secondCurrency;

     }

     //-----------------------------------------------------------------------

     /**

      * Gets the first currency at fault.

      * 

      * @return the currency at fault, may be null

      */

     public CurrencyUnit getFirstCurrency() {

         return firstCurrency;

     }

     /**

      * Gets the second currency at fault.

      * 

      * @return the currency at fault, may be null

      */

     public CurrencyUnit getSecondCurrency() {

         return secondCurrency;

     }

 }