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Spring Framework example source code file (Cart.java)

This example Spring Framework source code file (Cart.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

cart, cartitem, cartitem, hashmap, io, item, item, iterator, iterator, map, pagedlistholder, pagedlistholder, serializable, util

The Spring Framework Cart.java source code

package org.springframework.samples.jpetstore.domain;

import java.io.Serializable;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.springframework.beans.support.PagedListHolder;

public class Cart implements Serializable {

  /* Private Fields */

  private final Map itemMap = Collections.synchronizedMap(new HashMap());
	
  private final PagedListHolder itemList = new PagedListHolder();

  /* JavaBeans Properties */

	public Cart() {
		this.itemList.setPageSize(4);
	}

	public Iterator getAllCartItems() { return itemList.getSource().iterator(); }
  public PagedListHolder getCartItemList() { return itemList; }
  public int getNumberOfItems() { return itemList.getSource().size(); }

  /* Public Methods */

  public boolean containsItemId(String itemId) {
    return itemMap.containsKey(itemId);
  }

  public void addItem(Item item, boolean isInStock) {
    CartItem cartItem = (CartItem) itemMap.get(item.getItemId());
    if (cartItem == null) {
      cartItem = new CartItem();
      cartItem.setItem(item);
      cartItem.setQuantity(0);
      cartItem.setInStock(isInStock);
      itemMap.put(item.getItemId(), cartItem);
      itemList.getSource().add(cartItem);
    }
    cartItem.incrementQuantity();
  }


  public Item removeItemById(String itemId) {
    CartItem cartItem = (CartItem) itemMap.remove(itemId);
    if (cartItem == null) {
      return null;
    }
		else {
      itemList.getSource().remove(cartItem);
      return cartItem.getItem();
    }
  }

  public void incrementQuantityByItemId(String itemId) {
    CartItem cartItem = (CartItem) itemMap.get(itemId);
    cartItem.incrementQuantity();
  }

  public void setQuantityByItemId(String itemId, int quantity) {
    CartItem cartItem = (CartItem) itemMap.get(itemId);
    cartItem.setQuantity(quantity);
  }

  public double getSubTotal() {
    double subTotal = 0;
    Iterator items = getAllCartItems();
    while (items.hasNext()) {
      CartItem cartItem = (CartItem) items.next();
      Item item = cartItem.getItem();
      double listPrice = item.getListPrice();
      int quantity = cartItem.getQuantity();
      subTotal += listPrice * quantity;
    }
    return subTotal;
  }

}

Other Spring Framework examples (source code examples)

Here is a short list of links related to this Spring Framework Cart.java source code file:

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