/demos/helloorm/src/com/google/appengine/demos/helloorm/GetFlight.java
Java | 64 lines | 54 code | 6 blank | 4 comment | 5 complexity | 34fad32bdad012b8c8ecffffed319994 MD5 | raw file
Possible License(s): Apache-2.0
- // Copyright 2008 Google Inc. All Rights Reserved.
- package com.google.appengine.demos.helloorm;
- import java.io.IOException;
- import javax.jdo.PersistenceManager;
- import javax.persistence.EntityManager;
- import javax.servlet.http.HttpServlet;
- import javax.servlet.http.HttpServletRequest;
- import javax.servlet.http.HttpServletResponse;
- /**
- * @author Max Ross <maxr@google.com>
- */
- public class GetFlight extends HttpServlet {
- @Override
- public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
- resp.setContentType("text/html");
- String key = req.getParameter("key");
- if (key == null) {
- resp.getWriter().println("No key provided.");
- return;
- }
- Flight f;
- if (PersistenceStandard.get() == PersistenceStandard.JPA) {
- f = findJPA(Long.valueOf(key));
- } else {
- f = findJDO(Long.valueOf(key));
- }
- resp.getWriter().println("<form action=\"updateFlight\" method=\"post\">");
- resp.getWriter().println("<input name=\"key\" type=\"hidden\" value=\"" + key + "\"/>");
- resp.getWriter().println("<table>");
- resp.getWriter().println("<tr>");
- resp.getWriter().println("<th>Origin</th><td><input name=\"orig\" type=\"text\" value=\"" + f.getOrig() + "\"/></td>");
- resp.getWriter().println("<th>Destination</th><td><input name=\"dest\" type=\"text\" value=\"" + f.getDest() + "\"/></td>");
- resp.getWriter().println("</tr>");
- resp.getWriter().println("<tr><td><input type=\"submit\" value=\"Update Flight\"></td></tr>");
- resp.getWriter().println("</table>");
- resp.getWriter().println("</form>");
- resp.getWriter().println("<form action=\"deleteFlight\" method=\"post\">");
- resp.getWriter().println("<input name=\"key\" type=\"hidden\" value=\"" + key + "\"/>");
- resp.getWriter().println("<input type=\"submit\" value=\"Delete Flight\"></td></tr>");
- resp.getWriter().println("</form>");
- }
- private Flight findJPA(long key) {
- EntityManager em = EMF.get().createEntityManager();
- try {
- return em.find(Flight.class, key);
- } finally {
- em.close();
- }
- }
- private Flight findJDO(long key) {
- PersistenceManager pm = PMF.get().getPersistenceManager();
- try {
- return pm.getObjectById(Flight.class, key);
- } finally {
- pm.close();
- }
- }
- }