CartItem.java

/*
 *    Copyright 2009-2012 the original author or authors.
 *
 *    Licensed 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.ibatis.domain.jpetstore;

import java.io.Serializable;
import java.math.BigDecimal;


public class CartItem implements Serializable {

  private static final long serialVersionUID = 1L;

  private Item item;
  private int quantity;
  private boolean inStock;
  private BigDecimal total;

  public boolean isInStock() {
    return inStock;
  }

  public void setInStock(boolean inStock) {
    this.inStock = inStock;
  }

  public BigDecimal getTotal() {
    return total;
  }

  public Item getItem() {
    return item;
  }

  public void setItem(Item item) {
    this.item = item;
    calculateTotal();
  }

  public int getQuantity() {
    return quantity;
  }

  public void setQuantity(int quantity) {
    this.quantity = quantity;
    calculateTotal();
  }

  public void incrementQuantity() {
    quantity++;
    calculateTotal();
  }

  private void calculateTotal() {
    if (item != null && item.getListPrice() != null) {
      total = item.getListPrice().multiply(new BigDecimal(quantity));
    } else {
      total = null;
    }
  }

}