package com.oreilly.jent.corba;
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* from O'Reilly books does require permission. Answering a question by
* citing this book and quoting example code does not require permission.
* Incorporating a significant amount of example code from this book into
* your product's documentation does require permission.
*
* We appreciate, but do not require, attribution. An attribution usually
* includes the title, author, publisher, and ISBN. For example:
*
* "Java Enterprise in a Nutshell, Third Edition,
* by Jim Farley and William Crawford
* with Prakash Malani, John G. Norman, and Justin Gehtland.
* Copyright 2006 O'Reilly Media, Inc., 0-596-10142-2."
*
* If you feel your use of code examples falls outside fair use or the
* permission given above, feel free to contact us at
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*/
/**
* AccountImplPOA: Implementation of the Account remote interface, based on the
* CORBA 2.3 (POA-compliant) version of the IDL-to-Java mapping (introduced
* in JDK 1.4).
*/
public class AccountImplPOA extends AccountPOA {
// Our current balance
private float mBalance = 0;
// Name on account
private String mName = "";
// Create a new account with the given name
public AccountImplPOA(String name) {
mName = name;
}
public String getName() {
return mName;
}
public float getBalance() {
return mBalance;
}
// Withdraw some funds
public void withdraw(float amt) throws InsufficientFundsException {
if (mBalance >= amt) {
mBalance -= amt;
// Log transaction...
System.out.println("--> Withdrew " + amt + " from account " + getName());
System.out.println(" New balance: " + getBalance());
}
else {
throw new InsufficientFundsException("Withdrawal request of " + amt +
" exceeds balance of " + mBalance);
}
}
// Deposit some funds
public void deposit(float amt) {
mBalance += amt;
// Log transaction...
System.out.println("--> Deposited " + amt + " into account " + getName());
System.out.println(" New balance: " + getBalance());
}
// Move some funds from another (remote) account into this one
public void transfer(float amt, Account src)
throws InsufficientFundsException {
if (checkTransfer(src, amt)) {
src.withdraw(amt);
this.deposit(amt);
// Log transaction...
System.out.println("--> Transferred " + amt + " from account " + getName());
System.out.println(" New balance: " + getBalance());
}
else {
throw new InsufficientFundsException("Source account balance is less " +
"than the requested transfer.");
}
}
// Make several transfers from other (remote) accounts into this one
public void transferBatch(float[] amts, Account[] srcs)
throws InsufficientFundsException {
// Iterate through the accounts and the amounts to be
// transferred from each
for (int i = 0; i < amts.length; i++) {
float amt = amts[i];
Account src = srcs[i];
// Make the transaction
this.transfer(amt, src);
}
}
// Check to see if the transfer is possible, given the source account
private boolean checkTransfer(Account src, float amt) {
boolean approved = false;
if (src.getBalance() >= amt) {
approved = true;
}
return approved;
}
}
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