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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.tuscany.sca.itest.transaction;
import java.util.HashMap;
import java.util.Map;
/**
* @version $Rev$ $Date$
*/
public abstract class AccountServiceImpl implements AccountService {
protected Map<String, Float> accounts = new HashMap<String, Float>();
/**
* @see org.apache.tuscany.sca.itest.transaction.AccountService#deposit(String, float)
*/
public void deposit(String accountNumber, float amount) throws AccountNotFoundException {
float balance = getBalance(accountNumber);
balance += amount;
save(accountNumber, balance);
accounts.put(accountNumber, balance);
}
/**
* @see org.apache.tuscany.sca.itest.transaction.AccountService#getBalance(String)
*/
public float getBalance(String accountNumber) throws AccountNotFoundException {
Float balance = accounts.get(accountNumber);
if (balance == null) {
balance = load(accountNumber);
accounts.put(accountNumber, balance);
}
return balance;
}
/**
* @see org.apache.tuscany.sca.itest.transaction.AccountService#withdraw(String, float)
*/
public void withdraw(String accountNumber, float amount) throws OverDraftException, AccountNotFoundException {
float balance = getBalance(accountNumber);
if (amount > balance) {
throw new OverDraftException("Insufficient fund");
}
balance -= amount;
save(accountNumber, balance);
accounts.put(accountNumber, balance);
}
protected abstract float load(String accountNumber) throws AccountNotFoundException;
protected abstract void save(String accountNumber, float balance) throws AccountNotFoundException;
}
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