1.1 --- a/task1/solution06/src/org/apidesign/apifest08/currency/ConvertorFactory.java Tue Sep 30 12:24:45 2008 +0200
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,65 +0,0 @@
1.4 -package org.apidesign.apifest08.currency;
1.5 -
1.6 -import static org.apidesign.apifest08.currency.Assert.notNull;
1.7 -
1.8 -import java.math.BigDecimal;
1.9 -import java.math.RoundingMode;
1.10 -import java.util.ArrayList;
1.11 -import java.util.Currency;
1.12 -import java.util.List;
1.13 -
1.14 -/**
1.15 - * The factory for {@link Convertor}.
1.16 - *
1.17 - * @see #newInstance()
1.18 - */
1.19 -public final class ConvertorFactory {
1.20 - //do not expose constructor
1.21 - private ConvertorFactory(){}
1.22 -
1.23 - /**
1.24 - * @return a convertor instance.
1.25 - *
1.26 - * @throws CurrencyException in a convertor cannot be instantiated
1.27 - */
1.28 - public static Convertor newInstance() throws CurrencyException{
1.29 - return new DefaultConvertor();
1.30 - }
1.31 -
1.32 - private static final class DefaultConvertor extends Convertor {
1.33 - private List<Bid> bids;
1.34 -
1.35 - private DefaultConvertor() {
1.36 - bids = new ArrayList<Bid>();
1.37 - Bid usdCzk = new Bid(Currencies.USD, Currencies.CZK, new BigDecimal("17"));
1.38 - bids.add(usdCzk);
1.39 - Bid skCzk = new Bid(Currencies.SKK, Currencies.CZK, new BigDecimal("0.8"));
1.40 - bids.add(skCzk);
1.41 - }
1.42 -
1.43 - @Override
1.44 - public Amount convert(Amount from, Currency targetCurrency)
1.45 - throws CurrencyException {
1.46 - return convert(from.getValue(), from.getCurrency(), targetCurrency);
1.47 -
1.48 - }
1.49 -
1.50 - @Override
1.51 - public Amount convert(BigDecimal amount, Currency from,
1.52 - Currency targetCurrency) throws ConversionException,
1.53 - UnsupportedConversionException {
1.54 - notNull(from, "from");
1.55 - notNull(targetCurrency, "targetCurrency");
1.56 -
1.57 - int index = bids.indexOf(new Bid(from, targetCurrency));
1.58 - if(index == -1) {
1.59 - throw new UnsupportedConversionException(from, targetCurrency);
1.60 - }
1.61 - Bid bid = bids.get(index);
1.62 - BigDecimal bidValue = bid.getBidValue(from, targetCurrency);
1.63 - BigDecimal result = bidValue.multiply(amount);
1.64 - return new Amount(result, targetCurrency);
1.65 - }
1.66 -
1.67 - }
1.68 -}