/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a full listing
* of individual contributors.
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/*
* Copyright (C) 2003, 2004
* Arjuna Technologies Limited
* Newcastle upon Tyne, UK
*
* $Id: BankClient.java 2342 2006-03-30 13:06:17Z $
*/
package com.arjuna.demo.jts.localbank;
import com.arjuna.ats.jts.OTSManager;
import com.arjuna.orbportability.OA;
import com.arjuna.orbportability.ORB;
import com.arjuna.orbportability.RootOA;
import org.omg.CosTransactions.Current;
import java.io.IOException;
/**
* The <CODE>BankClient</CODE> application is an interactive CLI that allows the user of the JBoss Transactions product
* to manipulate a database backed bank under transactional control.
*/
public class BankClient
{
/**
* A reference to the bank to invoke banking operations upon.
*/
private Bank _bank;
/**
* Create a new BankClient indicating the Bank to execute updates and queries upon.
*
* @param bank A reference to the bank to update.
*/
private BankClient(Bank bank)
{
// Store this reference for calls to be executed upon
_bank = bank;
}
/**
* Display menu and return the selected operation.
*
* @return The users choice of command.
*/
private static int menu()
{
System.out.println("");
System.out.println("-------------------------------------------------");
System.out.println("Bank client ");
System.out.println("-------------------------------------------------");
System.out.println("");
System.out.println("Select an option : ");
System.out.println("\t0. Quit");
System.out.println("\t1. Create a new account.");
System.out.println("\t2. Get an account information.");
System.out.println("\t3. Make a transfer.");
System.out.println("\t4. Credit an account.");
System.out.println("\t5. Withdraw from an account.");
System.out.println("\t6. Display this menu.");
System.out.println("");
System.out.print("Your choice : ");
String choice = input();
// Can only be null if there was a problem reading the input from the user.
if (choice == null)
return 0;
// Return the int indicating the user's choice
try
{
return Integer.parseInt(choice);
}
catch (NumberFormatException e)
{
// If the user input was not a number return as if the user asked to redisplay the menu.
return 6;
}
}
/**
* This operation is used to get data from the keyboard.
*
* @return The input from the keyboard, or null if there is a problem reading the data.
*/
private static String input()
{
try
{
java.io.BufferedReader reader = new java.io.BufferedReader(new java.io.InputStreamReader(System.in));
return reader.readLine();
}
catch (IOException ioe)
{
System.err.println("Problem reading from the keyboard, returning null");
// Ignore this and return null
}
return null;
}
/**
* This will display the menu in a loop asking for user input to create accounts or update them.
*/
private void start()
{
while (true)
{
switch (menu())
{
case 0:
System.exit(0);
case 1:
newAccount();
break;
case 2:
getInfo();
break;
case 3:
makeTransfer();
break;
case 4:
makeCredit();
break;
case 5:
makeWithdraw();
break;
case 6:
break;
}
}
}
/**
* This operation is used to create a new account.
*/
private void newAccount()
{
System.out.println("");
System.out.println("- Create a new account -");
System.out.println("------------------------");
System.out.println("");
System.out.print("Name : ");
String name = input();
if (name == null)
{
System.out.println("Abort operation...");
return;
}
System.out.print("Initial balance : ");
String balance = input();
if (balance == null)
{
System.out.println("Abort operation...");
return;
}
float fbalance = 0;
try
{
fbalance = new Float(balance).floatValue();
}
catch (java.lang.Exception ex)
{
System.out.println("Invalid float number, abort operation...");
return;
}
try
{
Current current = OTSManager.get_current();
System.out.println("Beginning a User transaction to create account");
current.begin();
Account acc = _bank.create_account(name);
acc.credit(fbalance);
System.out.println("Attempt to commit the account creation transaction");
current.commit(false);
}
catch (Exception e)
{
System.err.println("ERROR - " + e);
}
}
/**
* This operation is used to get information about an account.
*/
private void getInfo()
{
System.out.println("");
System.out.println("- Get information about an account -");
System.out.println("------------------------------------");
System.out.println("");
System.out.print("Name : ");
String name = input();
if (name == null)
{
System.out.println("Abort operation...");
return;
}
try
{
Current current = OTSManager.get_current();
System.out.println("Beginning a User transaction to get balance");
current.begin();
try
{
Account acc = _bank.get_account(name);
System.out.println("Balance : " + acc.balance());
}
catch (NotExistingAccount nea)
{
System.out.println("Account not Found");
current.rollback_only();
}
current.commit(false);
}
catch (Exception e)
{
System.err.println("ERROR - " + e);
}
}
/**
* This operation is used to make a transfer from an account to another account.
*/
private void makeTransfer()
{
System.out.println("");
System.out.println("- Make a transfer -");
System.out.println("-------------------");
System.out.println("");
System.out.print("Take money from : ");
String name_supplier = input();
if (name_supplier == null)
{
System.out.println("Abort operation...");
return;
}
System.out.print("Put money to : ");
String name_consumer = input();
if (name_consumer == null)
{
System.out.println("Abort operation...");
return;
}
System.out.print("Transfer amount : ");
String amount = input();
if (amount == null)
{
System.out.println("Abort operation...");
return;
}
float famount = 0;
try
{
famount = new Float(amount).floatValue();
}
catch (java.lang.Exception ex)
{
System.out.println("Invalid float number, abort operation...");
return;
}
Current current = null;
try
{
current = OTSManager.get_current();
System.out.println("Beginning a User transaction to Transfer money");
current.begin();
try
{
Account supplier = _bank.get_account(name_supplier);
Account consumer = _bank.get_account(name_consumer);
supplier.debit(famount);
consumer.credit(famount);
}
catch (NotExistingAccount nea)
{
System.out.println("Account not Found");
current.rollback_only();
}
current.commit(false);
}
catch (Exception e)
{
System.err.println("ERROR - " + e);
}
}
/**
* This operation is used to credit an account.
*/
private void makeCredit()
{
System.out.println("");
System.out.println("- Credit an Account -");
System.out.println("-------------------");
System.out.println("");
System.out.print("Give the Account name : ");
String name_consumer = input();
if (name_consumer == null)
{
System.out.println("Abort operation...");
return;
}
System.out.print("Amount to credit : ");
String amount = input();
if (amount == null)
{
System.out.println("Abort operation...");
return;
}
float famount = 0;
try
{
famount = new Float(amount).floatValue();
}
catch (java.lang.Exception ex)
{
System.out.println("Invalid float number, abort operation...");
return;
}
try
{
Current current = OTSManager.get_current();
System.out.println("Beginning a User transaction to credit an account");
current.begin();
try
{
Account consumer = _bank.get_account(name_consumer);
consumer.credit(famount);
}
catch (NotExistingAccount nea)
{
System.out.println("The requested account does not exist!");
current.rollback_only();
}
current.commit(false);
}
catch (Exception e)
{
System.err.println("ERROR - " + e);
}
}
/**
* This operation is used to withdraw money from an account.
*/
private void makeWithdraw()
{
System.out.println("");
System.out.println("- Withrdaw from an Account -");
System.out.println("-------------------");
System.out.println("");
System.out.print("Give the Account name : ");
String name_debit = input();
if (name_debit == null)
{
System.out.println("Abort operation...");
return;
}
System.out.print("Amount to withdraw : ");
String amount = input();
if (amount == null)
{
System.out.println("Abort operation...");
return;
}
float famount = 0;
try
{
famount = new Float(amount).floatValue();
}
catch (java.lang.Exception ex)
{
System.out.println("Invalid float number, abort operation...");
return;
}
try
{
Current current = OTSManager.get_current();
System.out.println("Beginning a User transaction to withdraw from an account");
current.begin();
try
{
Account debiter = _bank.get_account(name_debit);
debiter.debit(famount);
}
catch (NotExistingAccount nea)
{
System.out.println("The requested account does not exist!");
current.rollback_only();
}
current.commit(false);
}
catch (Exception e)
{
System.err.println("ERROR - " + e);
}
}
/**
* This is the entry point into the JBoss Transaction product trailmap sample that uses a <CODE>Hashtable</CODE> to
* store the bank accounts repository. It is part of the JTS trailmap when using local objects.
*
* @param args Not used in this example.
*/
public static void main(String[] args)
{
// Define an ORB suitable for use by the JBoss Transactions product ORB portability layer.
ORB myORB = null;
// Define an object adapter suitable for use by the JBoss Transactions product ORB portability layer.
RootOA myOA = null;
try
{
// Initialize the ORB reference using the JBoss Transactions product ORB portability layer.
myORB = ORB.getInstance("test");
// Initialize the object adapter reference using the JBoss Transactions product ORB portability layer.
myOA = OA.getRootOA(myORB);
// Initialize the ORB using the JBoss Transactions product ORB portability layer.
myORB.initORB(args, null);
// Initialize the object adapter reference using the JBoss Transactions product ORB portability layer.
myOA.initOA();
}
catch (Exception e)
{
// The ORB has not been correctly configured!
// Display as much help as possible to the user track down the configuration problem
System.err.println("Trailmap Error: ORB Initialisation failed: " + e);
e.printStackTrace();
System.exit(0);
}
// The volatile <CODE>Bank</CODE> implementation
Bank bank = new Bank();
// A client that can invoke operations on this <CODE>Bank</CODE>
BankClient client = new BankClient(bank);
// Start the client, this will run the CLI portion of the client code
client.start();
}
}