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/***
 * OW2 FraSCAti Tinfi
 * Copyright (C) 2010-2018 Inria, Univ. Lille
 *
 * 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 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
 *
 * Contact: [email protected]
 *
 * Author: Lionel Seinturier
 * Contributor: Remi Melisson
 */

package org.ow2.frascati.tinfi;

import javax.security.auth.Subject;

/**
 * This class manages the thread-local security subject.
 * 
 * @author Lionel Seinturier 
 * @author Remi Melisson 
 * @since 1.4.1
 */
public class SecuritySubjectManager {

    /**
     * Return the singleton instance of this class.
     */
    public static SecuritySubjectManager get() {
        return instance;
    }
    private static SecuritySubjectManager instance =
        new SecuritySubjectManager();
    
    private static ThreadLocal tl = new ThreadLocal();
    
    public void setSecuritySubject( Subject subject ) {
        tl.set(subject);
    }
    
    public Subject getSecuritySubject() {
        Subject subject = tl.get();
        return subject;
    }
}