#67 Discussing a Money Transfer Implementation

Discuss how the money transfer method works and how it should be implemented:

import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Isolation;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;

@Service
@Scope(value = ConfigurableBeanFactory.SCOPE_PROTOTYPE)
public class PaymentService {

    @Transactional(
            propagation = Propagation.REQUIRES_NEW,
            rollbackFor = Exception.class
    )
    public void transferMoney(
            String sourceAccount,
            String targetAccount,
            BigDecimal sum
    ) {
        // business logic for performing the transfer
    }
}