rmisession.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: RMISession.java,v 1.7 2003/04/13 21:13:38 joerg Exp $
 ******************************************************************************/

package de.iiit.access.common.rmi;

import de.iiit.access.common.api.*;
import de.iiit.access.server.*;
//import de.iiit.access.server.api.*;

import java.io.*;
import java.rmi.*;
import java.rmi.server.*;

import org.apache.log4j.Logger;

/** This class implements a RMI connection to the AccessServer.
 * @version $Revision: 1.7 $ $Date: 2003/04/13 21:13:38 $
 */
public class RMISession extends UnicastRemoteObject implements RMISessionIf
{
    /** CVS Version Tag */
    private static final String vcid = "$Id: RMISession.java,v 1.7 2003/04/13 21:13:38 joerg Exp $";

    private Logger logger = Logger.getLogger(this.getClass());
    
    private boolean verifyUser = true;

    private String user = null;
    
    private ExpressionEvaluator evaluator = new ExpressionEvaluator();

    /** Creates a new instance of RMISession
     * @param user the name of the for whom the the new session will be used.
     * @throws RemoteException if an RMI error occurs.
     */
    public RMISession(String user) throws RemoteException
    {
        this.user   = user;
    }
        
    /** Evaluates one expression.
     * @param expr the expression to evaluate
     * @throws RemoteException if an RMI error occurs.
     * @throws RMIParserException if a ParserException occurs on the server side.
     * @return true if the user is member of the set described by the expression and false
     * otherwise.
     */    
    public boolean resolveExpr(String expr) throws RemoteException, ParserException
    {
        boolean answer = false;

        logger.info("Evaluating <" + expr + "> for user <" + user + ">");

        long t = System.currentTimeMillis();

        answer = evaluator.evaluateExpression(user, expr);

        t = System.currentTimeMillis() - t;

        logger.info("Answer = <" + answer + ">, ellapsed Time = " + t + "ms");
        
        return answer;
    }

}

/**
 * $Log: RMISession.java,v $
 * Revision 1.7  2003/04/13 21:13:38  joerg
 * Copyright statements changed to LGPL
 *
 * Revision 1.6  2003/04/13 21:09:56  joerg
 * Package structure modified
 *
 * Revision 1.5  2003/04/13 20:49:09  joerg
 * Package structure modified
 *
 * Revision 1.4  2003/04/13 20:28:01  joerg
 * Package structure modified
 *
 * Revision 1.3  2003/04/13 20:16:42  joerg
 * Package structure modified
 *
 * Revision 1.2  2003/04/07 20:08:49  joerg
 * Improved JavaDoc.
 *
 * Revision 1.1  2003/03/30 20:44:16  joerg
 * Ongoing development
 *
 */