jdk/src/share/classes/sun/security/acl/PrincipalImpl.java

/*
 * Copyright 1996 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package sun.security.acl;

import java.security.*;

/**
 * This class implements the principal interface.
 *
 * @author      Satish Dharmaraj
 */
public class PrincipalImpl implements Principal {

    private String user;

    /**
     * Construct a principal from a string user name.
     * @param user The string form of the principal name.
     */
    public PrincipalImpl(String user) {
        this.user = user;
    }

    /**
     * This function returns true if the object passed matches
     * the principal represented in this implementation
     * @param another the Principal to compare with.
     * @return true if the Principal passed is the same as that
     * encapsulated in this object, false otherwise
     */
    public boolean equals(Object another) {
        if (another instanceof PrincipalImpl) {
            PrincipalImpl p = (PrincipalImpl) another;
            return user.equals(p.toString());
        } else
          return false;
    }

    /**
     * Prints a stringified version of the principal.
     */
    public String toString() {
        return user;
    }

    /**
     * return a hashcode for the principal.
     */
    public int hashCode() {
        return user.hashCode();
    }

    /**
     * return the name of the principal.
     */
    public String getName() {
        return user;
    }

}