net.swas.explorer.servlet.mgt.AddRuleFormGroup.java Source code

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Here is the source code for net.swas.explorer.servlet.mgt.AddRuleFormGroup.java

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/*
 * This file is part of WebSiren.
 *
 *  WebSiren is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
    
 *  WebSiren is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with WebSiren.  If not, see <http://www.gnu.org/licenses/>.
 */
package net.swas.explorer.servlet.mgt;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletConfig;
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 net.swas.explorer.ec.RuleGroup;
import net.swas.explorer.ec.User;
import net.swas.explorer.ecf.Entity;
import net.swas.explorer.oh.handler.OntologyHandler;
import net.swas.explorer.oh.handler.RuleGroupHandler;
import net.swas.explorer.oh.lo.OntologyLoader;
import net.swas.explorer.translator.SemTranslator;
import net.swas.explorer.util.FormFieldValidator;

import org.json.simple.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This servlet class is responsible for adding new rule based on specified group in ontology
 */
@WebServlet("/addRuleFormGroup")
public class AddRuleFormGroup extends HttpServlet {

    private static final long serialVersionUID = 1L;
    private final static Logger log = LoggerFactory.getLogger(AddRuleFormGroup.class);
    private OntologyHandler handler = null;
    private OntologyLoader loader = null;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public AddRuleFormGroup() {
        super();
    }

    /**
     * @see Servlet#init(ServletConfig)
     */
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        this.loader = OntologyLoader.getOntLoader(getServletContext());
        this.handler = new RuleGroupHandler(loader);
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
    }

    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    @SuppressWarnings("unchecked")
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        log.info("Getting form parameters .. ");

        String name = request.getParameter("name");
        String status = "", msg = "";
        List<String> groupList = new ArrayList<String>();

        response.setContentType("application/json");
        response.setCharacterEncoding("UTF-8");
        PrintWriter out = response.getWriter();
        JSONObject json = new JSONObject();

        if (FormFieldValidator.isLogin(request.getSession())) {

            String userID = (String) request.getSession().getAttribute("userName");
            if (name.length() != 0) {

                log.info("Group Name : " + name);
                name = name.replace(" ", "_");
                User user = SemTranslator.toUserBeans(userID, "", "");

                RuleGroup group = SemTranslator.toRuleGroupBeans(name, "");
                group.setUserCreatedBy(user);
                if (handler.add(group) != null) {

                    log.info("Group stored successfully ...");
                    status = "0";
                    msg = "Group added successfully";

                    for (Entity entity : handler.getAll()) {
                        RuleGroup rg = (RuleGroup) entity;
                        groupList.add(rg.getName());
                    }

                    json.put("groups", groupList);
                    json.put("selected", name);

                } else {
                    status = "1";
                    msg = "Un-succcesful";
                }
            } else {
                status = "1";
                msg = "please fill out blank field";
            }
        } else {
            status = "2";
            msg = "User Session Expired";
        }

        json.put("status", status);
        json.put("message", msg);

        try {
            log.info("Sending Json : " + json.toString());
            out.print(json.toString());
        } finally {
            out.close();
        }
    }

}