japod@6: package org.apidesign.apifest08.currency;
japod@6: 
japod@6: 
japod@6: 
japod@6: /**
japod@16:  * Creates {@link Convertor} implementations.
japod@6:  * @author lukas
japod@6:  *
japod@6:  */
japod@6: public class ConvertorFactory {
japod@6: 	private ConvertorFactory()
japod@6: 	{
japod@6: 		//nothing
japod@6: 	}
japod@6: 		
japod@6: 	/**
japod@6: 	 * Creates {@link Convertor} that converts from sourceEquivalent.currency to destinationEquivalent.currency. 
japod@6: 	 * Exchange rate is set as equivalents. It means if you want to create USD to CZK convertor where USD1 = CZK17 
japod@16:      * call createConvertor(new MoneyImpl(1, USD), new MoneyImpl(17, CZK)). Convertor created by this method 
japod@56:      * rounds the result to two decimal places. Convertor created by this method is thread safe.
japod@6: 	 * @param sourceEquivalent
japod@6: 	 * @param destinationEquivalent
japod@6: 	 * @return
japod@6: 	 */
japod@34: 	public static final ExtendedConvertor createConvertor(Money sourceEquivalent, Money destinationEquivalent)
japod@6: 	{
japod@34: 		return mergeConvertors(
japod@34: 				new DefaultConvertor(sourceEquivalent, destinationEquivalent),
japod@34: 				new DefaultConvertor(destinationEquivalent ,sourceEquivalent)
japod@34: 		);
japod@34: 	}
japod@34: 	
japod@34: 	/**
japod@34: 	 * Merges convertors. The resulting convertor has ability to do all conversions that its underlying 
japod@34: 	 * convertors could do. No consistency validation is done, inconsistent input will result in a convertor with
japod@56: 	 * inconsistent behavior. Convertor created by this method is thread safe.
japod@34: 	 * @param convertors
japod@34: 	 * @return
japod@34: 	 */
japod@34: 	public static final ExtendedConvertor mergeConvertors(ExtendedConvertor... convertors)
japod@34: 	{
japod@34: 		return new CompositeConvertor(convertors);
japod@6: 	}
japod@6: 	
japod@6: 
japod@6: }