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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program 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 for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package netscape.security.acl;

import java.security.Principal;
import java.security.acl.*;

/**
 * The PermissionImpl class implements the permission 
 * interface for permissions that are strings.
 * @author Satish Dharmaraj
 */
public class PermissionImpl implements Permission {

    private String permission;

    /**
     * Construct a permission object using a string.
     * @param permission the stringified version of the permission.
     */
    public PermissionImpl(String permission) {
	this.permission = permission;
    }

    /**
     * This function returns true if the object passed matches the permission 
     * represented in this interface.
     * @param another The Permission object to compare with.
     * @return true if the Permission objects are equal, false otherwise
     */
    public boolean equals(Object another) {
	if (another instanceof Permission) {
	    Permission p = (Permission) another;
	    return permission.equals(p.toString());
	} else {
	    return false;
	}
    }
    
    /**
     * Prints a stringified version of the permission.
     * @return the string representation of the Permission.
     */
    public String toString() {
	return permission;
    }
}