2 * Copyright (C) 2015 Roland Haeder
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 package org.mxchange.jshopcore.model.basket;
19 import java.io.Serializable;
23 * An interface for baskets
25 * @author Roland Haeder
26 * @param <T> Any addable basket items
28 public interface Basket<T extends AddableBasketItem> extends Serializable {
31 * Adds given item instance to this basket
32 * @param item Item instance to add
34 public void addItem (final T item);
37 * Checks whether the given item as already been added. If the product's
38 * item id number was found in basket, the corresponding item instance will be set
40 * @param item Item instance to check
41 * @return Whether the given item has been found
43 public boolean isAdded (final T item);
46 * Checks if the basket is empty
48 * @return Whether the basket is empty
50 public boolean isEmpty ();
53 * Initializes this instance with given ServletContext
58 * Some "getter" for all entries in this basket
60 * @return Map on all basket items
62 public Map<Long, T> getAll ();
65 * Getter for last entry
67 * @return Last added item in basket
72 * Getter for last num rows
74 * @return Last num rows
76 public int getLastNumRows ();