edittestaction.java

老外的在线考试

/*
 * CyberTester - J2EE Web application for creating, delivering and managing tests/exams/surveys. 
 * Copyright (C) 2004 CyberDemia Research and Services Pty Ltd
 *
 * 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 2 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 (see the file COPYING); if not, write to the
 * Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * See the COPYING file located in the top-level-directory of
 * the archive of this program for complete text of license.
 */
package com.cyberdemia.cybertester.admin.test;

import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import com.cyberdemia.school.*;
import com.cyberdemia.cybertester.*;
import java.util.logging.*;
import com.cyberdemia.cybertester.admin.*;

/**
 * 
 * EditTestAction  is a Struts action to load the test editor page.
 *  
 * @version $Revision: 1.6 $ at $Date: 2004/06/10 23:36:09 $ by $Author: alexycyap $
 * @author Alexander Yap
 */
public final class EditTestAction extends AbstractAdminAction 
{
	protected ActionForward doPerform(
		ActionMapping mapping, ActionForm form,
		HttpServletRequest request, HttpServletResponse response,
		HttpSession session) throws Exception	
	{
		Logger logger = CyberTesterUtils.getLogger();
		String mode = request.getParameter(AdminConstants.MODE_KEY);
		if (mode==null)
			mode = AdminConstants.EDITOR_NEW_MODE;
		session.setAttribute(AdminConstants.MODE_KEY, mode);


		if (form==null)
		{
			form = new TestForm();
			if ("request".equals(mapping.getScope()))
				request.setAttribute(mapping.getAttribute(), form);
			else
				session.setAttribute(mapping.getAttribute(), form);
		}
		TestForm testForm = (TestForm)form;

		// populate the form with data if editing existing test.
		if (AdminConstants.EDITOR_EDIT_MODE.equalsIgnoreCase(mode))
		{
            Integer testId = CyberTesterUtils.getIntegerParameterOrRequestAttribute(request,AdminConstants.TEST_ID_KEY);
			if (testId==null)
			{
				throw new ServletException("Missing parameter "+AdminConstants.TEST_ID_KEY);
			}
			logger.fine("Editing Test "+testId);
			try
			{
				TestManagerHome tMgrHome = CyberTesterUtils.getTestManagerHome();
				TestManager testMgr = (TestManager)tMgrHome.create();
				TestData testData = testMgr.getTestData(testId);
				testForm.setId( testId );
				testForm.setMode(mode);
				testForm.setName( testData.getName() );
				testForm.setOwnerHierId(testData.getOwnerHierId());
				testForm.setPassPercentage(String.valueOf(testData.getPassPercentage()));
				testForm.setMultiQuestionsMode(testData.isMultiQuestionsMode());
				testForm.setSuppressQuestionFeedback(testData.isSuppressQuestionFeedback());
				testForm.setSuppressTestEndFeedback(testData.isSuppressTestEndFeedback());
				testForm.setTimeLimitSeconds(testData.getTimeLimitSeconds());
				session.setAttribute( AdminConstants.TEST_DATA_KEY, testData );
			}
			catch (Exception ex)
			{
				logger.log( Level.SEVERE, "Error transferring Test data to form.", ex);
				throw ex;
			}
		}
		else
		{
			String hierId = (String)session.getAttribute(AdminConstants.SELECTED_HIERARCHY_ID_KEY);
			if (hierId==null)
			{
				ActionErrors errors = new ActionErrors();
				errors.add(ActionErrors.GLOBAL_ERROR, new ActionError("error.hierarchyNode.unselected"));
				saveErrors(request, errors);
				return mapping.findForward(Constants.ERROR);
			}
			testForm.reset(mapping,request);
			logger.fine("Adding new Test to hierarchy node "+hierId);
			testForm.setOwnerHierId( hierId );
		}

		request.setAttribute(AdminConstants.ASSOC_PARAM_PREFIX_KEY, AdminConstants.ASSOC_PARAM_PREFIX);
		request.setAttribute(AdminConstants.DISASSOC_PARAM_PREFIX_KEY, AdminConstants.DISASSOC_PARAM_PREFIX);
		// Set a transactional control token to prevent double posting
		saveToken(request);
		return (mapping.findForward(Constants.SUCCESS));
	}
}