package servlet; import test2_constraints_validation.*; import test3_persistence.store_class; import test3_persistence.test_class; import javax.annotation.Resource; import javax.ejb.EJB; import javax.ejb.Stateless; import javax.inject.Inject; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.transaction.*; import javax.validation.ConstraintViolation; import javax.validation.Validator; import javax.validation.ValidatorFactory; import javax.validation.executable.ExecutableValidator; import java.io.IOException; import java.io.PrintWriter; import java.lang.reflect.Method; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Set; /** * Created by Giovanni on 25/04/2015. */ @WebServlet(name = "Servlettest3") public class Servlettest3 extends HttpServlet { @EJB store_class s; protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); try (PrintWriter out = response.getWriter()) { /* TODO output your page here. */ out.println(""); out.println(""); out.println(""); out.println("Servlet xg"); out.println(""); out.println(""); out.println("

Servlet xg at " + request.getContextPath() + "

"); s.store_class(new test_class()); out.println(s.find(1L).getTitle()); //s.fake_remove(1L); s.remove_and_persist(1L); test_class t = s.find(1L); t.setTitle("alibaa"); out.println(s.find(1L).getTitle()); // database isn't updated out.println(s.contains(s.find(1L))); // it's false s.merge(t); out.println(s.find(1L).getTitle());// database is updated! All OK! //test_class q = (test_class) s.namedquery_single("findtest_class") ; //out.println(q.getTitle()); /* List q = s.namedquery_multiple("findtest_class") ; Iterator it = q.iterator(); while (it.hasNext()){ out.println(((test_class) it.next()).getTitle()); } */ out.println("
"); List q2 = s.dynquery_multiple("SELECT t FROM test_class t") ; Iterator it = q2.iterator(); while (it.hasNext()){ out.println(((test_class) it.next()).getTitle()); } out.println("
"); HashMap h = new HashMap(); h.put("fname", "alibaa"); // h.put(...); List q3 = s.dynquery_multiple_string("SELECT t FROM test_class t where t.title = :fname", h) ; Iterator it2 = q3.iterator(); while (it2.hasNext()){ out.println(((test_class) it2.next()).getTitle()); } out.println("
"); HashMap h2 = new HashMap(); h2.put(1,"alibaa"); // h2.put(...); List q4 = s.dynquery_multiple_integer("SELECT t FROM test_class t where t.title = ?1", h2) ; Iterator it3 = q4.iterator(); while (it3.hasNext()){ out.println(((test_class) it3.next()).getTitle()); } out.println(""); out.println(""); } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } }