feedme.controller.AddOrDeleteCategoryServlet.java Source code

Introduction

Here is the source code for feedme.controller.AddOrDeleteCategoryServlet.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 feedme.controller;

import feedme.model.DbHPOnLoad;
import feedme.model.DbRestaurantsManagement;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map.Entry;
import java.util.logging.Level;
import java.util.logging.Logger;
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 org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

/**
 *
 * @author david
 */
@WebServlet(name = "AddOrDeleteCategoryServlet", urlPatterns = { "/add-resturent-category" })
public class AddOrDeleteCategoryServlet extends HttpServlet {

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setCharacterEncoding("UTF-8");
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
        request.setCharacterEncoding("UTF-8");
        response.setStatus(HttpServletResponse.SC_OK);
        String CategoryName = request.getParameter("categoryName").trim();
        DbRestaurantsManagement ob = new DbRestaurantsManagement();

        boolean flag = false;

        HashMap<String, Integer> cat = new DbHPOnLoad().getCategories();

        for (String se : cat.keySet()) {
            if (se.contains(CategoryName))
                flag = true;
        }
        int result = 0;
        if (!flag)
            result = ob.addNewCategory(CategoryName);

        PrintWriter out = response.getWriter();
        if (result == 1) {
            if (isAjax(request) == true) { // Stay in the same page, and sand json message

                try {
                    cat = new DbHPOnLoad().getCategories();
                    JSONObject catObj = new JSONObject();
                    JSONArray catArray = new JSONArray();
                    for (Entry<String, Integer> entry : cat.entrySet()) {
                        catArray.put(
                                new JSONObject().put("cat_id", entry.getValue()).put("cat_name", entry.getKey()));
                    }
                    catObj.put("categories", catArray);
                    catObj.put("status", true);
                    response.setContentType("application/json");
                    PrintWriter writer = response.getWriter();
                    writer.print(catObj);
                    response.getWriter().flush();
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            } else { // redirect to othe page

            }
        }
    }

    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

    private boolean isAjax(HttpServletRequest request) {
        return "XMLHttpRequest".equals(request.getHeader("X-Requested-With"));
    }

}