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

/**
 * 
 * SaveTestAction is a Struts action to save the values received from 
 * the test editor to either a new or existing test.
 *  
 * @version $Revision: 1.5 $ at $Date: 2004/04/12 14:57:29 $ by $Author: alexycyap $
 * @author Alexander Yap
 */
public final class SaveTestAction extends AbstractAdminAction
{
	protected ActionForward doPerform(
		ActionMapping mapping, ActionForm form,
		HttpServletRequest request, HttpServletResponse response,
		HttpSession session) throws Exception	
	{
		TestForm testForm = (TestForm)form;

		// Was this transaction cancelled?
		if (isCancelled(request)) 
		{
			cleanup( mapping, session );
			return mapping.findForward(Constants.SUCCESS);
		}

		Logger logger = CyberTesterUtils.getLogger();
		ActionErrors errors = new ActionErrors();
		// If submitted out of order, go to error page.
		if (!isTokenValid(request))
		{
			errors.add(ActionErrors.GLOBAL_ERROR, new ActionError("error.transaction.token"));
		}

		resetToken(request);

		if (errors.isEmpty())
		{
			// Examine all parameters to determine associations with resources
			ArrayList addResList = new ArrayList();
			ArrayList removeResList = new ArrayList();
			Enumeration paramEnum = request.getParameterNames();
			while (paramEnum.hasMoreElements())
			{
				String paramName = (String)paramEnum.nextElement();
				if (paramName.startsWith(AdminConstants.ASSOC_PARAM_PREFIX))
				{
					String resIdStr = paramName.substring(AdminConstants.ASSOC_PARAM_PREFIX.length());
					if ("true".equalsIgnoreCase( request.getParameter(paramName)))
					{
						logger.log(Level.FINE, "Adding resource "+resIdStr);
                        Integer resId = CyberTesterUtils.convertToInteger(resIdStr);
                        if (resId!=null)
                        {
                            addResList.add(resId);
                        }
					}
					else
					{
						logger.log(Level.FINE, "NOT adding resource "+resIdStr);
					}
				}
				else if (paramName.startsWith(AdminConstants.DISASSOC_PARAM_PREFIX))
				{
					String resIdStr = paramName.substring(AdminConstants.DISASSOC_PARAM_PREFIX.length());
					if ("true".equalsIgnoreCase( request.getParameter(paramName)))
					{
						logger.log(Level.FINE, "Removing resource "+resIdStr);
                        Integer resId = CyberTesterUtils.convertToInteger(resIdStr);
                        if (resId!=null)
                        {
                            removeResList.add(resId);
                        }
					}
					else
					{
						logger.log(Level.FINE, "NOT removing resource "+resIdStr);
					}
				}
			}
			
			try
			{
				TestManagerHome tMgrHome = CyberTesterUtils.getTestManagerHome();
				TestManager testMgr = (TestManager)tMgrHome.create();
				if (testForm.isNew())
				{
					logger.log(Level.FINE, "Creating new test, name=\""+testForm.getName()+"\".");
					Integer testId = testMgr.addTest(
						testForm.getName(), testForm.getOwnerHierId(), Double.parseDouble(testForm.getPassPercentage()), 
						testForm.getTimeLimitSeconds(), testForm.isMultiQuestionsMode(),
						testForm.isSuppressQuestionFeedback(), testForm.isSuppressTestEndFeedback() );	
					logger.log(Level.FINE, "Created new test, ID="+testId+"  name=\""+testForm.getName()+"\".");
				}
				else
				{
					Integer testId = testForm.getId();
					if (testId!=null)
					{
						logger.log(Level.FINE, "Modifying test, ID="+testId);
						TestData testData = new TestData(testId, testForm.getName(), null, testForm.getOwnerHierId(), 
							Double.parseDouble(testForm.getPassPercentage()), 
							testForm.getTimeLimitSeconds(), testForm.isMultiQuestionsMode(),
							testForm.isSuppressQuestionFeedback(), testForm.isSuppressTestEndFeedback(), false);
						testData.setResourceIdsToAdd( (Integer[])addResList.toArray(new Integer[0]) );
						testData.setResourceIdsToRemove( (Integer[])removeResList.toArray(new Integer[0]) );						
						testMgr.setTestData(testId, testData);
					}
					else
					{
						logger.log(Level.WARNING, "Test editing aborted because ID is missing.");
					}
								
				}
			}
			catch (Exception ex)
			{
				logger.log( Level.SEVERE, "Error saving Test", ex);
				cleanup( mapping, session );
				throw ex;
			}
		}
		cleanup( mapping, session );
		if (!errors.isEmpty())
		{
			saveErrors(request, errors);
			saveToken(request);
			return (new ActionForward(mapping.getInput()));
		}
		return mapping.findForward(Constants.SUCCESS);
	}

	private void cleanup( ActionMapping mapping, HttpSession session)
	{
		if (mapping.getAttribute() != null)
			session.removeAttribute(mapping.getAttribute());
		session.removeAttribute(AdminConstants.MODE_KEY);
		session.removeAttribute(AdminConstants.TEST_DATA_KEY);
	}

}