BasketServlet


1   /******************************************************************************
2    * The contents of this file are subject to the   Compiere License  Version 1.1
3    * ("License"); You may not use this file except in compliance with the License
4    * You may obtain a copy of the License at http://www.compiere.org/license.html
5    * Software distributed under the License is distributed on an  "AS IS"  basis,
6    * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
7    * the specific language governing rights and limitations under the License.
8    * The Original Code is                  Compiere  ERP & CRM  Business Solution
9    * The Initial Developer of the Original Code is Jorg Janke  and ComPiere, Inc.
10   * Portions created by Jorg Janke are Copyright (C) 1999-2001 Jorg Janke, parts
11   * created by ComPiere are Copyright (C) ComPiere, Inc.;   All Rights Reserved.
12   * Contributor(s): ______________________________________.
13   *****************************************************************************/
14  package org.compiere.wstore;
15  
16  import javax.servlet.*;
17  import javax.servlet.http.*;
18  import java.io.*;
19  import java.util.*;
20  import java.sql.*;
21  import java.math.*;
22  
23  import org.apache.ecs.*;
24  import org.apache.ecs.xhtml.*;
25  
26  import org.compiere.util.*;
27  import org.compiere.www.*;
28  
29  /**
30   *  Shopping Basket.
31   *  you could add a new line via parameter
32   *  ?M_Product_ID=11&Name=aaaaa&Quantity=1&Price=11.11
33   *  if price list found, the price will be potentially overwritten
34   *
35   *  @author Jorg Janke
36   *  @version  $Id: BasketServlet.java,v 1.9 2003/10/04 03:58:26 jjanke Exp $
37   */
38  public class BasketServlet extends HttpServlet
39  {
40      /** Logging                     */
41      private Logger          log = Logger.getCLogger(getClass());
42      /** Name                        */
43      static public final String        NAME = "basketServlet";
44  
45      /**
46       *  Initialize global variables
47       *
48       *  @param config Configuration
49       *  @throws ServletException
50       */
51      public void init(ServletConfig config)
52          throws ServletException
53      {
54          super.init(config);
55          if (!WEnv.initWeb(config))
56              throw new ServletException("BasketServlet.init");
57      }   //  init
58  
59      /**
60       * Get Servlet information
61       * @return Info
62       */
63      public String   getServletInfo()
64      {
65          return "Compiere Web Basket";
66      }   //  getServletInfo
67  
68      /**
69       * Clean up resources
70       */
71      public void destroy()
72      {
73          log.debug("destroy");
74      }   //  destroy
75  
76  
77      /*************************************************************************/
78  
79      /**
80       *  Process the HTTP Get request.
81       *
82       *  @param request request
83       *  @param response response
84       *  @throws ServletException
85       *  @throws IOException
86       */
87      public void doGet(HttpServletRequest request, HttpServletResponse response)
88          throws ServletException, IOException
89      {
90          log.info("doGet from " + request.getRemoteHost() + " - " + request.getRemoteAddr()
91              + " - " + request.getRequestURL());
92          Properties ctx = JSPEnv.getCtx(request);
93          HttpSession session = request.getSession(true);
94          session.removeAttribute(JSPEnv.HDR_MESSAGE);
95  
96          //  Create WebBasket
97          WebBasket wb = (WebBasket)session.getAttribute(WebBasket.NAME);
98          if (wb == null)
99              wb = new WebBasket();
100         session.setAttribute(WebBasket.NAME, wb);
101 
102 
103         //  Get Price List
104         PriceList pl = (PriceList)session.getAttribute(PriceList.NAME);
105         if (pl == null)
106         {
107             log.warn("No Price List in session - " + PriceList.NAME);
108             pl = (PriceList)request.getAttribute(PriceList.NAME);
109         }
110         if (pl == null)
111         {
112             //  Create Price List
113             int AD_Client_ID = Env.getContextAsInt(ctx, "AD_Client_ID");
114             int M_PriceList_ID = Env.getContextAsInt(ctx, "M_PriceList_ID");
115             pl = PriceList.get(AD_Client_ID, M_PriceList_ID);
116         }
117         log.debug("- PL=" + pl);
118 
119         //  Do we delete?   Delete_x
120         deleteLine(request, wb);
121         //  Do we add?  Add_x
122         addLine(request, pl, wb);
123 
124         log.debug("- now - " + wb);
125         //  Go back to basket
126         String   url = "basket.jsp";
127         log.info ("doGet - Forward to " + url);
128         RequestDispatcher dispatcher = getServletContext ().getRequestDispatcher (url);
129         dispatcher.forward (request, response);
130     }   //  doGet
131 
132     /**
133      *  Add Line
134      *  @param request request
135      *  @param pl price list
136      *  @param wb web basket
137      */
138     private void addLine (HttpServletRequest request, PriceList pl, WebBasket wb)
139     {
140         //  Get Parameter
141         int M_PriceList_ID = WUtil.getParameterAsInt (request, "M_PriceList_ID");
142         int M_PriceList_Version_ID = WUtil.getParameterAsInt (request, "M_PriceList_Version_ID");
143         wb.setM_PriceList_ID(M_PriceList_ID);
144         wb.setM_PriceList_Version_ID(M_PriceList_Version_ID);
145         //
146         int M_Product_ID = WUtil.getParameterAsInt (request, "M_Product_ID");
147         String   Name = request.getParameter ("Name");
148         String   sQuantity = request.getParameter ("Quantity");
149         String   sPrice = request.getParameter ("Price");
150 
151         //  Search for Product ID   Add_134 = Add
152         Enumeration en = request.getParameterNames ();
153         while (M_Product_ID == 0 && en.hasMoreElements ())
154         {
155             String   parameter = (String  )en.nextElement ();
156             if (parameter.startsWith ("Add_"))
157             {
158                 if (WUtil.exists (request, parameter)) //   to be sure
159                 {
160                     try
161                     {
162                         M_Product_ID = Integer.parseInt (parameter.substring (4));
163                         log.debug ("- found Parameter=" + parameter + " -> " + M_Product_ID);
164                         if (!WUtil.exists(sQuantity))
165                             sQuantity = request.getParameter ("Qty_" + M_Product_ID);
166                         if (!WUtil.exists(sPrice))
167                             sPrice = request.getParameter("Price_" + M_Product_ID);
168                         if (!WUtil.exists(Name))
169                             Name = request.getParameter("Name_" + M_Product_ID);
170                         log.debug("- found Parameters " + Name + ",Qty=" + sQuantity + ",Price=" + sPrice);
171                     }
172                     catch (NumberFormatException   ex)
173                     {
174                         log.warn ("ParseError for " + parameter + " - " + ex.toString ());
175                     }
176                 }
177             }
178         }
179         if (M_Product_ID == 0)
180             return;
181 
182         //  Get Qty
183         BigDecimal Qty = null;
184         try
185         {
186             if (sQuantity != null && sQuantity.length () > 0)
187                 Qty = new BigDecimal (sQuantity);
188         }
189         catch (Exception   ex1)
190         {
191         }
192         if (Qty == null)
193             Qty = WebBasketLine.ONE;
194 
195         //  Get Price
196         BigDecimal Price = null;
197         //  Find info in price list
198         if (M_Product_ID != 0 && pl != null)
199         {
200             ArrayList prices = pl.getPrices ();
201             for (int i = 0; i < prices.size (); i++)
202             {
203                 PriceListProduct plp = (PriceListProduct)prices.get (i);
204                 if (plp.getId () == M_Product_ID)
205                 {
206                     Price = plp.getPrice ();
207                     Name = plp.getName ();
208                     log.debug ("- found in PL = " + Name + " - " + Price);
209                     break;
210                 }
211             }
212         }
213         try //  if not found and as parameter
214         {
215             if (Price == null && sPrice != null && sPrice.length () > 0)
216                 Price = new BigDecimal (sPrice);
217         }
218         catch (Exception   ex1)
219         {
220         }
221         if (Price == null)
222             Price = WebBasketLine.ONE;
223 
224         WebBasketLine wbl = new WebBasketLine (M_Product_ID, Name, Qty, Price);
225         wb.add (wbl);
226         log.debug ("- added - " + wbl);
227     }   //  addLine
228 
229     /**
230      *  Delete Line.
231      *      Delete_x
232      *  @param request request
233      *  @param wb web basket
234      */
235     private void deleteLine (HttpServletRequest request, WebBasket wb)
236     {
237         Enumeration en = request.getParameterNames();
238         while (en.hasMoreElements())
239         {
240             String   parameter = (String  )en.nextElement();
241             if (parameter.startsWith("Delete_"))
242             {
243                 try
244                 {
245                     int line = Integer.parseInt (parameter.substring (7));
246                     log.debug ("- delete parameter=" + parameter + " -> " + line);
247                     wb.delete(line);
248                 }
249                 catch (NumberFormatException   ex)
250                 {
251                     log.warn("ParseError for " + parameter + " - " + ex.toString());
252                 }
253             }
254         }
255     }   //  deleteLine
256 
257 
258     /**
259      *  Process the HTTP Post request
260      *
261      *  @param request request
262      *  @param response response
263      *  @throws ServletException
264      *  @throws IOException
265      */
266     public void doPost(HttpServletRequest request, HttpServletResponse response)
267         throws ServletException, IOException
268     {
269     //  log.info("doPost from " + request.getRemoteHost() + " - " + request.getRemoteAddr());
270         doGet(request, response);
271     }
272 }   //  Basket
273
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