package org.prevayler.demos.memento;
import org.prevayler.Prevayler;
import org.prevayler.PrevaylerFactory;
import org.prevayler.demos.memento.commands.AccountCreation;
import org.prevayler.demos.memento.commands.AccountDeletion;
import org.prevayler.demos.memento.commands.Deposit;
import org.prevayler.demos.memento.commands.Transfer;
import org.prevayler.util.memento.MementoManagerCommand;
import org.prevayler.util.memento.MementoTransaction;
/**
* A simple test of the error recovery using mementos.
* <p/>
* Dialogs will pop up asking whether to fail at specific points.
* <p/>
* All these tests have to be moved to JUnit tests.
*
* @author Johan Stuyts
*/
public class TestErrorRecoveryWithMementos {
public static void main(String[] args) {
try {
run();
} catch (Exception ex) {
ex.printStackTrace();
}
}
private static Prevayler<Bank> prevayler;
private static Bank bank;
static {
try {
prevayler = PrevaylerFactory.createPrevayler(new Bank(), "demoMemento");
bank = prevayler.prevalentSystem();
} catch (Exception e) {
System.out.println("FAILED TO CREATE PREVAYLER!");
}
}
public static void run() throws Exception {
Account account1 = null, account2 = null;
System.out.println("*** Creating account 1");
MementoTransaction command = new AccountCreation("Owner 1");
account1 = execute(command);
System.out.println("*** Creating account 2");
command = new AccountCreation("Owner 2");
account2 = execute(command);
System.out.println("*** Depositing 500 into account 1");
command = new Deposit(account1, 500);
execute(command);
System.out.println("*** Transferring 200 from account 1 into account 2");
command = new Transfer(account1.number(), account2.number(), 200);
execute(command);
System.out.println("*** Deleting account 1");
command = new AccountDeletion(account1);
execute(command);
System.out.println("*** Deleting account 1");
command = new AccountDeletion(account2);
execute(command);
prevayler.takeSnapshot();
}
private static Account execute(MementoTransaction command) {
try {
return new MementoManagerCommand(command).executeAndQuery(prevayler.prevalentSystem(), prevayler.clock().time());
} catch (Exception exception) {
System.out.println("FAILURE!");
exception.printStackTrace(System.out);
} finally {
System.out.println(bank.toString());
}
return null;
}
}