japod@6: package org.apidesign.apifest08.currency;
japod@6: 
japod@6: /**
japod@6:  * Interface declaring method for computing conversion.
japod@6:  * 
japod@6:  * Because of a vague definition of currency amount's type,
japod@6:  * the interface has a generic type.
japod@6:  * 
japod@6:  * @author ked
japod@6:  * @see http://wiki.apidesign.org/wiki/APIDesignPatterns:ResponseReply
japod@6:  */
japod@6: interface Computer<AmountType> {
japod@6: 
japod@53:     void compute(ComputerRequest<AmountType> request, ComputerResponse<AmountType> response);
japod@6: 
japod@6:     final class ComputerRequest<AmountType> {
japod@6: 
japod@6:         private AmountType input;
japod@6:         private AmountType inputCurrencyRatio;
japod@6:         private AmountType outputCurrencyRatio;
japod@6: 
japod@6:         AmountType getInput() {
japod@6:             return input;
japod@6:         }
japod@6: 
japod@6:         void setInput(AmountType input) {
japod@6:             this.input = input;
japod@6:         }
japod@6: 
japod@6:         AmountType getInputCurrencyRatio() {
japod@6:             return inputCurrencyRatio;
japod@6:         }
japod@6: 
japod@6:         void setInputCurrencyRatio(AmountType inputCurrencyRatio) {
japod@6:             this.inputCurrencyRatio = inputCurrencyRatio;
japod@6:         }
japod@6: 
japod@6:         AmountType getOutputCurrencyRatio() {
japod@6:             return outputCurrencyRatio;
japod@6:         }
japod@6: 
japod@6:         void setOutputCurrencyRatio(AmountType outputCurrencyRatio) {
japod@6:             this.outputCurrencyRatio = outputCurrencyRatio;
japod@6:         }
japod@6:     }
japod@6: 
japod@6:     final class ComputerResponse<AmountType> {
japod@6: 
japod@6:         private AmountType result;
japod@6: 
japod@6:         AmountType getResult() {
japod@6:             return result;
japod@6:         }
japod@6: 
japod@6:         void setResult(AmountType result) {
japod@6:             this.result = result;
japod@6:         }
japod@6:     }
japod@6:     
japod@6:     
japod@6: }