org.infoscoop.web.CheckDuplicateUidFilter.java Source code

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Here is the source code for org.infoscoop.web.CheckDuplicateUidFilter.java

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/* infoScoop OpenSource
 * Copyright (C) 2010 Beacon IT Inc.
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.
 * 
 * This program 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0-standalone.html>.
 */

package org.infoscoop.web;

import java.io.IOException;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Expression;
import org.infoscoop.dao.model.Preference;
import org.infoscoop.util.SpringUtil;
import org.infoscoop.util.Xml2Json;
import org.json.JSONObject;

public class CheckDuplicateUidFilter implements Filter {
    public static String IS_PREVIEW = "isSelectProfilePreview";

    private static Log log = LogFactory.getLog(CheckDuplicateUidFilter.class);

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) request;
        HttpServletResponse resp = (HttpServletResponse) response;

        String isPreview = request.getParameter(CheckDuplicateUidFilter.IS_PREVIEW);
        String uid = (String) req.getSession().getAttribute("Uid");
        if (uid == null || "true".equalsIgnoreCase(isPreview)) {
            chain.doFilter(req, resp);
            return;
        }

        SessionFactory sessionFactory = (SessionFactory) SpringUtil.getBean("sessionFactory");
        Session session = sessionFactory.openSession();

        try {
            Collection preferences = session.createCriteria(Preference.class)
                    .add(Expression.eq("Uid", uid).ignoreCase()).list();

            if (preferences.size() == 1) {
                Preference pref = (Preference) preferences.iterator().next();

                if (!uid.toLowerCase().equals(pref.getUid())) {
                    resp.sendRedirect("mergeprofile?Uid=" + pref.getUid());
                    return;
                }
            } else if (preferences.size() > 1) {
                Map dupeIdMap = new HashMap();
                for (Iterator ite = preferences.iterator(); ite.hasNext();) {
                    Preference pref = (Preference) ite.next();
                    String dupeId = pref.getUid();

                    String lastModified = null;
                    try {
                        Xml2Json x2j = new Xml2Json();
                        String rootPath = "/preference";
                        x2j.addSkipRule(rootPath);
                        x2j.addPathRule(rootPath + "/property", "name", true, true);
                        String prefJsonStr = x2j.xml2json(pref.getElement());
                        JSONObject prefJSONObj = new JSONObject(prefJsonStr);

                        lastModified = prefJSONObj.getJSONObject("property").getString("logoffDateTime");
                    } catch (Exception ex) {
                        // ignore
                    }

                    dupeIdMap.put(dupeId, lastModified);
                }

                req.getSession().setAttribute("dupeIdMap", dupeIdMap);
                resp.sendRedirect("selectProfile.jsp");
                return;
            }
        } finally {
            session.close();
        }

        chain.doFilter(req, resp);
    }

    public void destroy() {
        // TODO Auto-generated method stub

    }

    public void init(FilterConfig arg0) throws ServletException {
        // TODO Auto-generated method stub

    }

}