@@ -0,0 +1,501 @@
+/**%0A * Project Distributed Transactions.%0A * Copyright Micha%C5%82 Szczygie%C5%82, 2013.%0A * Created at Dec 31, 2013.%0A */%0Apackage com.m4gik.business.operations;%0A%0Aimport org.springframework.transaction.annotation.Transactional;%0A%0Aimport com.m4gik.business.BaseDataSource;%0A%0A/**%0A * %0A * This class implements the supply-demand.%0A * %0A * @author m4gik %3Cmichal.szczygiel@wp.pl%3E%0A * %0A */%0Apublic class DemandSupply extends BaseDataSource %7B%0A%0A    /**%0A     * %0A     */%0A    @Transactional%0A    public void makeDemand() %7B%0A%0A    %7D%0A%0A%7D%0A

Add class for demand supply