/*

 * Copyright (c) 1996, 1999, Oracle and/or its affiliates. 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.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;

    }

    /**

     * Returns a hashcode for this PermissionImpl.

     *

     * @return a hashcode for this PermissionImpl.

     */

    public int hashCode() {

        return toString().hashCode();

    }

}