rightscache.java

iiitAccessServer是一个用Java编写的基于规则的企业鉴别系统。它作为一个服务器工作

/*******************************************************************************
 * Copyright (C) 2002, 2003
 * ingenieurbuero fuer innovative informationstechnik (iiit)
 * Dipl.-Ing. Joerg Beckmann, Dortmund, Germany
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser 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
 * or look at http://www.gnu.org/copleft/lesser.html.
 *
 * version $Id: RightsCache.java,v 1.4 2003/04/13 21:13:38 joerg Exp $
 ******************************************************************************/

package de.iiit.access.common.cache;

import de.iiit.cache.*;

import java.util.*;

/** A cache implementation holding results for one user. 
 * @version $Revision: 1.4 $ $Date: 2003/04/13 21:13:38 $
 */
public class RightsCache extends GenericInvalidationCache
{
    /** CVS Version Tag */
    private static final String vcid = "$Id: RightsCache.java,v 1.4 2003/04/13 21:13:38 joerg Exp $";
    
    /** Creates a new instance of RightsCache */
    public RightsCache()
    {
    }
    
    /** Creates a new instance of RightsCache
     * @param invalidationTimeout the period of time after which a specific cache entry will be ignored and
     * deleted.
     */    
    public RightsCache(long invalidationTimeout)
    {
        super(invalidationTimeout);
    }
    
    /** Adds the result of one expression to the cache.
     * @param expression The expression
     * @param isAllowed The result of the expression
     */    
    public void addRight(String expression, boolean isAllowed)
    {
        addElement(expression, new Boolean(isAllowed));
    }
    
    /** Retrieves the result of an expression from the cache.
     * @param expression The expression
     * @throws CacheFaultException if the result is not found in the cache
     * @return the result of the expression
     */    
    public boolean getRight(String expression) throws CacheFaultException
    {
        return ((Boolean) getElement(expression)).booleanValue();
    }
}

/**
 * $Log: RightsCache.java,v $
 * Revision 1.4  2003/04/13 21:13:38  joerg
 * Copyright statements changed to LGPL
 *
 * Revision 1.3  2003/04/13 20:16:41  joerg
 * Package structure modified
 *
 * Revision 1.2  2003/01/01 21:04:17  joerg
 * Copyright-Statement aktualisiert
 *
 * Revision 1.1  2002/12/19 15:24:23  joerg
 * Reparatur des CVS-Repositories
 *
 * Revision 1.3  2002/12/09 19:29:17  joerg
 * Versionsdaten in allen JavaDoc-Klassenbeschreibungen ergaenzt
 *
 * Revision 1.2  2002/12/09 16:32:26  joerg
 * JavaDoc Kommentare ergaenzt
 *
 * Revision 1.1  2002/11/02 18:23:32  joerg
 * Klasse verschoben ins Package 'cache'
 *
 * Revision 1.1  2002/11/01 21:36:47  joerg
 * Version mit funktionierenden 1st-level Cache
 *
 */