appserver/tests/v2-tests/appserv-tests/sqetests/web/bookstore/src/cart/ShoppingCart.java

/*
 * Copyright (c) 2004, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package cart;

import java.util.*;
import database.BookDetails;


public class ShoppingCart {
    HashMap items = null;
    int numberOfItems = 0;

    public ShoppingCart() {
        items = new HashMap();
    }

    public synchronized void add(String bookId, BookDetails book) {
        if (items.containsKey(bookId)) {
            ShoppingCartItem scitem = (ShoppingCartItem) items.get(bookId);
            scitem.incrementQuantity();
            System.out.println("in add, quantity is " + scitem.getQuantity());
        } else {
            ShoppingCartItem newItem = new ShoppingCartItem(book);
            items.put(bookId, newItem);
            System.out.println("in add, quantity is " + newItem.getQuantity());
        }

        //      numberOfItems++;
    }

    public synchronized void remove(String bookId) {
        if (items.containsKey(bookId)) {
            ShoppingCartItem scitem = (ShoppingCartItem) items.get(bookId);
            scitem.decrementQuantity();

            if (scitem.getQuantity() <= 0) {
                items.remove(bookId);
            }

            numberOfItems--;
        }
    }

    public synchronized List getItems() {
        List results = new ArrayList();
        Iterator items = this.items.values()
                                   .iterator();

        while (items.hasNext()) {
            results.add(items.next());
        }

        return (results);
    }

    protected void finalize() throws Throwable {
        items.clear();
    }

    public synchronized int getNumberOfItems() {
        numberOfItems = 0;

        for (Iterator i = getItems()
                              .iterator(); i.hasNext();) {
            ShoppingCartItem item = (ShoppingCartItem) i.next();
            numberOfItems += item.getQuantity();
            System.out.println("number of items is " + numberOfItems);
        }

        return numberOfItems;
    }

    public synchronized double getTotal() {
        double amount = 0.0;

        for (Iterator i = getItems()
                              .iterator(); i.hasNext();) {
            ShoppingCartItem item = (ShoppingCartItem) i.next();
            BookDetails bookDetails = (BookDetails) item.getItem();

            amount += (item.getQuantity() * bookDetails.getPrice());
        }

        return roundOff(amount);
    }

    private double roundOff(double x) {
        long val = Math.round(x * 100); // cents

        return val / 100.0;
    }

    public synchronized void clear() {
        System.err.println("Clearing cart.");
        items.clear();
        numberOfItems = 0;
    }
}