abstractadminaction.java

老外的在线考试

/*
 * CyberTester - J2EE Web application for creating, delivering and managing tests/exams/surveys. 
 * Copyright (C) 2003 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;

import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import java.io.IOException;
import com.cyberdemia.cybertester.Constants;
import com.cyberdemia.cybertester.AbstractUserAction;

/**
* Abstract base class for Struts actions within CyberTester administrator areas
* (areas requiring admin privileges). It ensures that the user has admin role before
* calling the abstract method <code>doPerform(...)</code>
* (defined in the base <code>AbstractUserAction</code> class).
* The concrete subclass must implement <code>doPerform(...)</code> to perform
* the normal Struts action.
*
* @author Alexander Yap
*/
public abstract class AbstractAdminAction extends AbstractUserAction
{
	public final ActionForward execute(ActionMapping mapping, ActionForm form,
		HttpServletRequest request, HttpServletResponse response)
		throws Exception
	{
		if (!request.isUserInRole("admin"))
		{
			return mapping.findForward(Constants.NO_ADMIN_ROLE);
		}

		return super.execute(mapping, form, request, response);
	}

}