mypackage.CreateColl.java Source code

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Here is the source code for mypackage.CreateColl.java

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/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package mypackage;

import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBCursor;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.JSONArray;
import org.json.JSONObject;

/**
 *
 * @author Kapil Gehlot
 */
public class CreateColl extends HttpServlet {
    public boolean collectionExists(String name, DB db) {
        Set<String> collNames = db.getCollectionNames();
        for (final String n : collNames) {
            if (n.equalsIgnoreCase(name)) {
                return true;
            }
        }
        return false;
    }

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            try {
                String getDBName = request.getParameter("dbname");
                String getCollName = request.getParameter("collname");
                MongoClient mongoClient = new MongoClient("localhost", 27017);
                DB mongoDatabase = mongoClient.getDB(getDBName);
                DBObject bObject = new BasicDBObject();
                bObject.put(getDBName, getCollName);
                if (!collectionExists(getDBName, mongoDatabase)) {
                    mongoDatabase.createCollection(getCollName, bObject);
                    //BasicDBObject doc = new BasicDBObject();
                    // doc.put("name",getCollName);
                    //  dBCollection.insert(doc);
                    out.print("true");
                } else {
                    out.print("false");
                }

            } catch (Exception e) {

            }
        }
    }

    // <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>

}