140 lines
4.1 KiB
Java
140 lines
4.1 KiB
Java
package servlet;
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import test2_constraints_validation.*;
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import test3_persistence.store_class;
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import test3_persistence.test_class;
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import javax.annotation.Resource;
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import javax.ejb.Stateless;
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import javax.inject.Inject;
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import javax.persistence.EntityManager;
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import javax.persistence.PersistenceContext;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.transaction.*;
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import javax.validation.ConstraintViolation;
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import javax.validation.Validator;
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import javax.validation.ValidatorFactory;
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import javax.validation.executable.ExecutableValidator;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.lang.reflect.Method;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Set;
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/**
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* Created by Giovanni on 25/04/2015.
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*/
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@WebServlet(name = "Servlettest3")
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public class Servlettest3 extends HttpServlet {
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@Inject
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store_class s;
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protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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response.setContentType("text/html;charset=UTF-8");
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try (PrintWriter out = response.getWriter()) {
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/* TODO output your page here. */
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out.println("<!DOCTYPE html>");
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out.println("<html>");
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out.println("<head>");
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out.println("<title>Servlet xg</title>");
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out.println("</head>");
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out.println("<body>");
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out.println("<h1>Servlet xg at " + request.getContextPath() + "</h1>");
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s.store_class(new test_class());
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out.println(s.find(1L).getTitle());
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//s.fake_remove(1L);
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s.remove_and_persist(1L);
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test_class t = s.find(1L);
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t.setTitle("alibaa");
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out.println(s.find(1L).getTitle()); // database isn't updated
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out.println(s.contains(s.find(1L))); // it's false
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s.merge(t);
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out.println(s.find(1L).getTitle());// database is updated! All OK!
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//test_class q = (test_class) s.namedquery_single("findtest_class") ;
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//out.println(q.getTitle());
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/*
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List<Object> q = s.namedquery_multiple("findtest_class") ;
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Iterator<Object> it = q.iterator();
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while (it.hasNext()){
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out.println(((test_class) it.next()).getTitle());
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}
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*/
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out.println("<br>");
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List<Object> q2 = s.dynquery_multiple("SELECT t FROM test_class t") ;
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Iterator<Object> it = q2.iterator();
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while (it.hasNext()){
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out.println(((test_class) it.next()).getTitle());
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}
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out.println("<br>");
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HashMap<String,String> h = new HashMap<String,String>();
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h.put("fname", "alibaa");
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// h.put(...);
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List<Object> q3 = s.dynquery_multiple_string("SELECT t FROM test_class t where t.title = :fname", h) ;
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Iterator<Object> it2 = q3.iterator();
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while (it2.hasNext()){
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out.println(((test_class) it2.next()).getTitle());
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}
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out.println("<br>");
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HashMap<Integer,String> h2 = new HashMap<Integer,String>();
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h2.put(1,"alibaa");
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// h2.put(...);
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List<Object> q4 = s.dynquery_multiple_integer("SELECT t FROM test_class t where t.title = ?1", h2) ;
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Iterator<Object> it3 = q4.iterator();
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while (it3.hasNext()){
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out.println(((test_class) it3.next()).getTitle());
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}
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out.println("</body>");
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out.println("</html>");
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}
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}
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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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processRequest(request, response);
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}
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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processRequest(request, response);
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}
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}
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