package org.apidesign.apifest08.currency;

import java.util.Currency;

/**

 * Convertor Factory implementation

 * In the real-time world this code should be optimized - convertors caching etc.

 * @author Ladislav Vitasek

 */

class CurrencyConvertorFactoryImpl extends AbstractConvertorFactory  {

    CurrencyConvertorFactoryImpl() {

        super();

    }

    // Note - implementation of this method is dummy

    public Convertor createConvertor(Currency currency1, Currency currency2, ConversionProperties conversionProperties) throws ConvertorNotAvailableException {

        if (currency1 == null || currency2 == null || conversionProperties == null)

            throw new NullPointerException();

        try {

            return new CurrencyConvertorImpl(currency1, currency2, conversionProperties.getConversionRatioProvider(), conversionProperties.getRoundingMode());//can be cached somehow

        } catch (Exception e) {

            throw new ConvertorNotAvailableException(e);

        }

    }

}