Examples of DollarPivotCurrencyExchangeRateMap

com.wesabe.api.util.money.DollarPivotCurrencyExchangeRateMap
A currency exchange rate map which is only populated with exchange rates to USD. Exchange rates are then calculated using the USD rate as a pivot.
This is not an accurate model of exchange rates, but it's close enough to have worked so far. The next version of this should drop this class in favor of finer-grained exchange rate data. @author coda @deprecated Not an accurate model of exchange rates. Build something better.

Examples of com.wesabe.api.util.money.DollarPivotCurrencyExchangeRateMap

@SuppressWarnings("deprecation")
public class DollarPivotCurrencyExchangeRateMapTest {
  public static class Adding_Exchange_Rates_To_USD {
    @Test
    public void itAddsTheTargetCurrencyToSupportedCurrencies() throws Exception {
      DollarPivotCurrencyExchangeRateMap exchangeRates = new DollarPivotCurrencyExchangeRateMap();
      exchangeRates.addExchangeRate(USD, EUR, jun14th, decimal("1.76"));
      
      assertTrue(exchangeRates.getCurrencies().contains(EUR));
    }

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Examples of com.wesabe.api.util.money.DollarPivotCurrencyExchangeRateMap

  }
  
  public static class Adding_Exchange_Rates_To_Other_Currencies {
    @Test
    public void itThrowsAnException() throws Exception {
      DollarPivotCurrencyExchangeRateMap exchangeRates = new DollarPivotCurrencyExchangeRateMap();
      
      boolean exceptionThrown = false;
      try {
        exchangeRates.addExchangeRate(EUR, NOK, jun14th, decimal("1.76"));
      } catch (IllegalArgumentException e) {
        exceptionThrown = true;
      }
      
      assertTrue("should have thrown an exception, but didn't", exceptionThrown);

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Examples of com.wesabe.api.util.money.DollarPivotCurrencyExchangeRateMap

  }
  
  public static class Calculating_Exchange_Rates {
    @Test
    public void itUsesUSDAsAPivotValue() throws Exception {
      DollarPivotCurrencyExchangeRateMap exchangeRates = new DollarPivotCurrencyExchangeRateMap();
      exchangeRates.addExchangeRate(USD, EUR, jun14th, decimal("0.7656"));
      exchangeRates.addExchangeRate(USD, NOK, jun14th, decimal("6.7258"));


      assertEquals(decimal("8.785004"), exchangeRates.getExchangeRate(EUR, NOK, jun14th));
      assertEquals(decimal("0.1138303"), exchangeRates.getExchangeRate(NOK, EUR, jun14th));
    }

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Examples of com.wesabe.api.util.money.DollarPivotCurrencyExchangeRateMap

      assertEquals(decimal("0.1138303"), exchangeRates.getExchangeRate(NOK, EUR, jun14th));
    }
    
    @Test
    public void itDoesStraightConversionsIfPossible() throws Exception {
      DollarPivotCurrencyExchangeRateMap exchangeRates = new DollarPivotCurrencyExchangeRateMap();
      exchangeRates.addExchangeRate(USD, GBP, jun14th, decimal("0.6846"));


      assertEquals(decimal("1.460707"), exchangeRates.getExchangeRate(GBP, USD, jun14th));
      assertEquals(decimal("0.6846000"), exchangeRates.getExchangeRate(USD, GBP, jun14th));
    }

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Examples of com.wesabe.api.util.money.DollarPivotCurrencyExchangeRateMap

    }
    
    @Test
    public void itHandlesVeryDevaluedCurrencies() throws Exception {
      final Currency KRW = Currency.getInstance("KRW");
      DollarPivotCurrencyExchangeRateMap exchangeRates = new DollarPivotCurrencyExchangeRateMap();
      exchangeRates.addExchangeRate(USD, KRW, date(2008, 12, 31), decimal("1262.00"));
      
      assertEquals(decimal("0.0007923930"), exchangeRates.getExchangeRate(KRW, USD, date(2009, 4, 30)));
      assertEquals(decimal("1262.000"), exchangeRates.getExchangeRate(USD, KRW, date(2009, 4, 30)));
    }

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Examples of com.wesabe.api.util.money.DollarPivotCurrencyExchangeRateMap

    final Session session = sessionFactory.openSession();
    try {
      logger.info("reading currency exchange rates");
      @SuppressWarnings("unchecked")
      final List<CurrencyExchangeRate> rates = session.getNamedQuery("com.wesabe.api.accounts.entities.CurrencyExchangeRate.findAll").list();
      final DollarPivotCurrencyExchangeRateMap exchangeRateMap = new DollarPivotCurrencyExchangeRateMap();


      logger.info("loading currency exchange rates");
      for (CurrencyExchangeRate rate : rates) {
        exchangeRateMap.addExchangeRate(USD, rate.getCurrency(), rate.getDate(), new BigDecimal(rate.getRate()));
      }


      logger.info(rates.size() + " exchange rates loaded");


      return exchangeRateMap;

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