1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/task4/solution13/src/org/apidesign/apifest08/currency/ExchangeRate.java	Sat Oct 11 23:38:46 2008 +0200
     1.3 @@ -0,0 +1,68 @@
     1.4 +
     1.5 +package org.apidesign.apifest08.currency;
     1.6 +
     1.7 +import java.math.BigDecimal;
     1.8 +
     1.9 +/**
    1.10 + * Exchange rate value. Contains <code>from</code> and <code>to</code> value.
    1.11 + * 
    1.12 + * @author arnostvalicek
    1.13 + */
    1.14 +public class ExchangeRate {
    1.15 +    private BigDecimal numberFor;
    1.16 +    private BigDecimal numberGet;
    1.17 +
    1.18 +    /**
    1.19 +     * Constructor for new exchange rate holding two values - <em>from value</em> and <em>to value</em>
    1.20 +     * @param fromValue Exchange rate <em>from value</em>
    1.21 +     * @param toValue Exchange rate <em>to value</em>
    1.22 +     */
    1.23 +    public  ExchangeRate(BigDecimal fromValue, BigDecimal toValue) {
    1.24 +        this.numberFor = fromValue;
    1.25 +        this.numberGet = toValue;
    1.26 +    }
    1.27 +    
    1.28 +    /**
    1.29 +     * Create new instance of <code>ExchangeRate</code> based on provided exchange rate, but swapping its
    1.30 +     * <em>from</em> and <em>to</em> value.
    1.31 +     * <p>
    1.32 +     * Provided exchange rate is not chaged, this method returns different instance describing reverted exchange rate.
    1.33 +     * 
    1.34 +     * @param rate Exchange rate which describes rate to be reverted.
    1.35 +     * @return Instance of reverted rate.
    1.36 +     */
    1.37 +    public static ExchangeRate createRevertedRate(ExchangeRate rate) {
    1.38 +        ExchangeRate reverted = new ExchangeRate(rate.getToValue(), rate.getFromValue());
    1.39 +        return reverted;
    1.40 +    }
    1.41 +
    1.42 +    @Override
    1.43 +    public String toString() {
    1.44 +        return "for "+numberFor+" recieve "+numberGet+" @"+getClass().getName();
    1.45 +    }
    1.46 +    
    1.47 +    /**
    1.48 +     * Return exchange rate <em>from</em> value stored in this object.
    1.49 +     * @return Returns <em>from</em> value for this exchange rate.
    1.50 +     */
    1.51 +    public BigDecimal getFromValue() {
    1.52 +        return numberFor;
    1.53 +    }
    1.54 +    
    1.55 +    /**
    1.56 +     * Return exchange rate <em>to</em> value stored in this object.
    1.57 +     * @return Returns <em>to</em> value for this exchange rate.
    1.58 +     */
    1.59 +    public BigDecimal getToValue() {
    1.60 +        return numberGet;
    1.61 +    }
    1.62 +    
    1.63 +    
    1.64 +//    public ExchangeRate createExchangeRate(BigDecimal forValue, BigDecimal getValue) {
    1.65 +//        ExchangeRate rate = new ExchangeRate(forValue, getValue);
    1.66 +//        return rate;
    1.67 +//    }
    1.68 +    
    1.69 +    
    1.70 +    
    1.71 +}