mirror of
https://github.com/tiennm99/java-design-patterns.git
synced 2026-05-15 12:59:00 +00:00
harshalkhachane
79 lines
3.3 KiB
Java
79 lines
3.3 KiB
Java
/*
|
|
* This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
|
|
*
|
|
* The MIT License
|
|
* Copyright © 2014-2022 Ilkka Seppälä
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
package com.iluwatar.specialcase;
|
|
|
|
import org.slf4j.Logger;
|
|
import org.slf4j.LoggerFactory;
|
|
|
|
/**
|
|
* <p>The Special Case Pattern is a software design pattern that encapsulates particular cases
|
|
* into subclasses that provide special behaviors.</p>
|
|
*
|
|
* <p>In this example ({@link ReceiptViewModel}) encapsulates all particular cases.</p>
|
|
*/
|
|
public class App {
|
|
|
|
private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
|
|
|
|
private static final String LOGGER_STRING = "[REQUEST] User: {} buy product: {}";
|
|
private static final String TEST_USER_1 = "ignite1771";
|
|
private static final String TEST_USER_2 = "abc123";
|
|
private static final String ITEM_TV = "tv";
|
|
private static final String ITEM_CAR = "car";
|
|
private static final String ITEM_COMPUTER = "computer";
|
|
|
|
/**
|
|
* Program entry point.
|
|
*/
|
|
public static void main(String[] args) {
|
|
// DB seeding
|
|
LOGGER.info("Db seeding: " + "1 user: {\"ignite1771\", amount = 1000.0}, "
|
|
+ "2 products: {\"computer\": price = 800.0, \"car\": price = 20000.0}");
|
|
Db.getInstance().seedUser(TEST_USER_1, 1000.0);
|
|
Db.getInstance().seedItem(ITEM_COMPUTER, 800.0);
|
|
Db.getInstance().seedItem(ITEM_CAR, 20000.0);
|
|
|
|
final var applicationServices = new ApplicationServicesImpl();
|
|
ReceiptViewModel receipt;
|
|
|
|
LOGGER.info(LOGGER_STRING, TEST_USER_2, ITEM_TV);
|
|
receipt = applicationServices.loggedInUserPurchase(TEST_USER_2, ITEM_TV);
|
|
receipt.show();
|
|
MaintenanceLock.getInstance().setLock(false);
|
|
LOGGER.info(LOGGER_STRING, TEST_USER_2, ITEM_TV);
|
|
receipt = applicationServices.loggedInUserPurchase(TEST_USER_2, ITEM_TV);
|
|
receipt.show();
|
|
LOGGER.info(LOGGER_STRING, TEST_USER_1, ITEM_TV);
|
|
receipt = applicationServices.loggedInUserPurchase(TEST_USER_1, ITEM_TV);
|
|
receipt.show();
|
|
LOGGER.info(LOGGER_STRING, TEST_USER_1, ITEM_CAR);
|
|
receipt = applicationServices.loggedInUserPurchase(TEST_USER_1, ITEM_CAR);
|
|
receipt.show();
|
|
LOGGER.info(LOGGER_STRING, TEST_USER_1, ITEM_COMPUTER);
|
|
receipt = applicationServices.loggedInUserPurchase(TEST_USER_1, ITEM_COMPUTER);
|
|
receipt.show();
|
|
}
|
|
}
|