servs.SearchBar.java Source code

Introduction

Here is the source code for servs.SearchBar.java

Source

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package servs;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

public class SearchBar extends HttpServlet {

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {

            String str = request.getParameter("q");
            String cat = request.getParameter("c");
            String area = request.getParameter("a");

            PrintWriter out = response.getWriter();

            Configuration cfg = new Configuration().configure("hibernate.cfg.xml");
            SessionFactory factory = cfg.buildSessionFactory();
            Session s = factory.openSession();
            Transaction tx = s.beginTransaction();

            String sql = "From bean.Record";
            Query q = s.createQuery(sql);

            if (!cat.isEmpty() && area.isEmpty()) {
                String strnew = "%" + str + "%";
                int catid = Integer.parseInt(cat);
                sql = "Select recname From bean.Record where recname like :name and catid=:catid";
                q = s.createQuery(sql);
                q.setParameter("name", strnew);
                q.setParameter("catid", catid);
            }

            else if (!area.isEmpty() && cat.isEmpty())

            {
                String areanew = "%" + area + "%";
                sql = "Select distinct r.recname" + " From bean.Record r,bean.Address a" + " where r.recid=a.recid"
                        + " and a.area like :name";
                q = s.createQuery(sql);
                q.setParameter("name", areanew);
            }

            else if (!area.isEmpty() && !cat.isEmpty()) {
                String areanew = "%" + area + "%";
                int catid = Integer.parseInt(cat);
                System.out.println(catid);
                sql = "Select distinct r.recname" + " From bean.Record r,bean.Address a" + " where r.recid=a.recid"
                        + " and r.catid =:catid" + " and a.area like :name";
                q = s.createQuery(sql);
                q.setParameter("catid", catid);
                q.setParameter("name", areanew);
            } else {
                sql = "Select recname From bean.Record";
                q = s.createQuery(sql);
            }

            List list = q.list();
            Iterator it = list.iterator();
            out.print("<datalist>");
            out.print("<option>---RECORDS---</option>");
            while (it.hasNext()) {
                Object rcname = it.next();
                out.print("<option value='" + rcname + "'>" + rcname + "</option>");
            }
            out.print("</datalist>");
            tx.commit();
            s.close();
            factory.close();

        } catch (Exception ex) {
            System.out.println("ERROR STARTS FROM HERE:" + ex);
        }

    }

    // <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
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    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
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}