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package epayment.framework;
/**
* The <code>IPaymentCommand</code> interface defines
* the common interface for all electronic payment
* actions.
* <p>
* Implementors of this interface encapsulate a payment
* request as an object which can be generically
* processed by the <code>PaymentProcessor</code>.
* The <code>PaymentProcessor</code> is responsible
* for installing an appropriate implementation of
* an <code>IGatewayAdapter</code>.
* <p>
* This class is strictly an example.
*
* @author <a href="mailto:mike@clarkware.com">Mike Clark</a>
* @author <a href="http://www.clarkware.com">Clarkware Consulting</a>
*/
public interface IPaymentCommand {
/**
* Executes this command using the specified payment
* adapter and returns a payment response.
*
* @param adapter Payment adapter.
* @return response Payment response.
* @throws PaymentException If an error occurs.
*/
public IPaymentResponse execute(IGatewayAdapter adapter)
throws PaymentException;
}
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