/** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
Configuration conf = new Configuration();
conf.addAnnotatedClass(Test.class);
conf.configure();
ServiceRegistry serviceRegistry =
new ServiceRegistryBuilder().applySettings(conf.getProperties()).buildServiceRegistry();
SessionFactory sf = conf.buildSessionFactory(serviceRegistry);
Session session = sf.openSession();
Test test;
String action = request.getParameter("action");
Transaction ts = null;
try {
switch (action) {
case "select":
List<Test> list = session.createQuery("from Test").list();
for (Iterator iterator = list.iterator(); iterator.hasNext(); ) {
test = (Test) iterator.next();
response.getWriter().print(test.getId() + " : ");
response.getWriter().println(test.getName());
}
break;
case "insert":
test = new Test();
test.setId(Integer.parseInt(request.getParameter("key")));
test.setName(request.getParameter("value"));
session.persist(test);
break;
case "delete":
test = new Test();
test.setId(Integer.parseInt(request.getParameter("key")));
session.delete(test);
break;
case "update":
test = new Test();
test.setId(Integer.parseInt(request.getParameter("key")));
test.setName(request.getParameter("value"));
session.update(test);
break;
case "transaction":
ts = session.beginTransaction();
test = new Test();
test.setId(1);
test.setName("hello");
session.save(test);
test = new Test();
test.setId(2);
test.setName("world");
session.save(test);
ts.commit();
}
} catch (Throwable t) {
if (ts != null) {
ts.rollback();
}
throw new ServletException(t);
} finally {
session.flush();
session.close();
}
}
