/**
* Convert specified amount target currency into USD .
*
* @see {@link CurrencyExchangeDao#getCurrencyExchange(String, Date)}
* @return amount in target currency or <code>null</code> if original <code>foreignAmount</code>
* was <code>null</code> or exchange rate cannot be identified.
*/
public BigDecimal convert(String currencyCode, Date effectiveFromDate, BigDecimal foreignAmount) {
if (foreignAmount == null) {
return null;
}
CurrencyExchange exchange =
currencyExchangeDao.getCurrencyExchange(currencyCode, effectiveFromDate);
if (exchange == null) {
return null;
}
BigDecimal foreignCurrencyAmount =
foreignAmount.setScale(exchange.getPrecisionNumber(), RoundingMode.HALF_UP);
BigDecimal convertedAmount =
foreignCurrencyAmount.divide(
exchange.getAlternativeExchangeRate(), USD_PRECISION, RoundingMode.HALF_UP);
return convertedAmount;
}
/**
* Convert specified amount target currency into another currency .
*
* @see {@link CurrencyExchangeDao#getCurrencyExchange(String, Date)}
* @return amount in target currency or <code>null</code> if original <code>originalAmount</code>
* was <code>null</code> or exchange rate cannot be identified.
*/
public BigDecimal convert(
String currencyCode,
String anotherCurrency,
Date effectiveFromDate,
BigDecimal originalAmount) {
if (originalAmount == null) {
return null;
}
if (anotherCurrency != null && anotherCurrency.equals(currencyCode)) {
return originalAmount;
}
CurrencyExchange exchange =
currencyExchangeDao.getCurrencyExchange(currencyCode, effectiveFromDate);
CurrencyExchange anotherExchange =
currencyExchangeDao.getCurrencyExchange(anotherCurrency, effectiveFromDate);
if (exchange == null || anotherExchange == null) {
return null;
}
BigDecimal originalCurrencyAmount =
originalAmount.setScale(exchange.getPrecisionNumber(), RoundingMode.HALF_UP);
BigDecimal exchangeRate =
exchange
.getAlternativeExchangeRate()
.divide(anotherExchange.getAlternativeExchangeRate(), 16, RoundingMode.HALF_UP);
BigDecimal convertedAmount =
originalCurrencyAmount.divide(
exchangeRate, anotherExchange.getPrecisionNumber(), RoundingMode.HALF_UP);
return convertedAmount;
}
