CustomerDetails.java revision ada1678a4262b208a7b87391f520a7767d25287c
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
/*
* CustomerDetails.java
*
* Created on March 17, 2008, 1:00 AM
*/
package web;
import java.io.*;
import java.net.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.Resource;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.transaction.UserTransaction;
import persistence.*;
/**
*
* @author adminuser
* @version
*/
@PersistenceContext(name = "persistence/LogicalName", unitName = "webappPU")
public class CustomerDetails extends HttpServlet {
@Resource
private UserTransaction utx;
/** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
// TODO output your page here
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet CustomerDetails</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet CustomerDetails at " + request.getContextPath () + "</h1>");
out.println("<h2>Search Customer Information</h2>");
out.println("<p>Pl. select from 1,2,3,4,5 as a customer number</p>");
String customerNr = request.getParameter("customer_nr");
if((customerNr != null) && !(customerNr.equals(""))) {
WebCustomer customer = findByID(new Integer(customerNr));
if(customer != null){
out.println("Customer's info for nr. " + customerNr + ": " + customer.getCustname());
}else{
out.println("Customer not found.");
}
}
out.println("<form>");
out.println("Customer number: <input type='text' name='customer_nr' />");
out.println("<input type=submit value=Select />");
out.println("</form>");
out.println("</body>");
out.println("</html>");
out.close();
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/** Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/** Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/** Returns a short description of the servlet.
*/
public String getServletInfo() {
return "Short description";
}
// </editor-fold>
protected WebCustomer findByID(Integer customerNr) {
WebCustomer customer=null;
try {
Context ctx = (Context) new InitialContext().lookup("java:comp/env");
utx.begin();
EntityManager em = (EntityManager) ctx.lookup("persistence/LogicalName");
customer = em.find(WebCustomer.class, customerNr);
utx.commit();
// TODO:
// em.persist(object); utx.commit();
} catch(Exception e) {
Logger.getLogger(getClass().getName()).log(Level.SEVERE,"exception caught", e);
throw new RuntimeException(e);
}
return customer;
}
}