edu.txstate.dmlab.clusteringwiki.web.IndexController.java Source code

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Here is the source code for edu.txstate.dmlab.clusteringwiki.web.IndexController.java

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package edu.txstate.dmlab.clusteringwiki.web;

/**
 *  ClusteringWiki - personalized and collaborative clustering of search results
 *  Copyright (C) 2010  Texas State University-San Marcos
 *  
 *  Contact: http://dmlab.cs.txstate.edu
 * 
 *  This program 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.
 * 
 *  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 General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import edu.txstate.dmlab.clusteringwiki.dao.TestExecutionDao;

/**
 * Controller for the main index page
 * 
 * @author David C. Anastasiu
 *
 */
@Controller
public class IndexController extends BaseController {

    @Autowired
    private TestExecutionDao testExecutionDao;

    @RequestMapping("index.*")
    public String getIndexPage(HttpServletRequest request, HttpServletResponse response, Model model) {
        if (request.getParameter("test") != null) {
            String executionId = request.getParameter("test").toLowerCase();
            if (executionId.equals("train")) {
                //user is requesting the training track.  Generate a new unique ID for this test
                executionId = testExecutionDao.addTrainingTest();
                return "redirect:index.html?test=" + executionId;
            }
            if (isValidExecutionId(executionId)) {
                //starting test
                final HttpSession session = request.getSession(true);
                if (session.getAttribute("testId") != null && !session.getAttribute("testId").equals(executionId)) {
                    request.setAttribute("message", "A test is already in progress in this session.<br>"
                            + "Please finish the current test of stop the test from the top menu before starting another.");
                    return "pageError";
                }
                session.setAttribute("executionId", executionId);
            } else {
                request.setAttribute("message", "Your test execution id is invalid.  Please try again.");
                return "pageError";
            }
        } else if (request.getParameter("endTest") != null) {
            //end in progress test
            final HttpSession session = request.getSession(false);
            if (session != null)
                session.removeAttribute("executionId");
        }
        return "index";
    }

    private boolean isValidExecutionId(String executionId) {
        return testExecutionDao.getExecutionTestId(executionId) != null;
    }

}