userutils.java

老外的在线考试

/*
 * UserEJB - CyberDemia's User management library implemented using EJBs.
 * Copyright (C) 2003 CyberDemia Research and Services
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 * 
 * You should have received a copy of the GNU Library General Public
 * License along with this library; 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 library for complete text of license.
 */
package com.cyberdemia.user.impl;

import java.util.*;

/**
* Utility class that provides some methods that are useful
* throughout the User module.
* This is for internal use of User module only.
*
* @author Alexander Yap
*/
public abstract class UserUtils
{

	static String[] decodeStringArray( String encoded, String separator)
	{
		if (encoded==null)
			return new String[0];
		
		return encoded.split(separator);
	}

	static String[] getRolesForGroups( String groupStr)
	{
		String[] groups = decodeStringArray(groupStr, ",");
		ArrayList roleList = new ArrayList();
		// Simple mapping from group to role.
		for (int g=0; g<groups.length; g++)
		{
			if ("mgr".equals(groups[g]))
			{
				roleList.add( "admin" );
			}
			else if ("student".equals(groups[g]))
			{
				roleList.add( "student" );
			}
		}
		return (String[])roleList.toArray( new String[0] );
	}
}