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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.cassandra.auth;

import java.util.Map;
import java.util.Set;

import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.exceptions.RequestExecutionException;
import org.apache.cassandra.exceptions.RequestValidationException;

/**
 * Responsible for managing roles (which also includes what
 * used to be known as users), including creation, deletion,
 * alteration and the granting and revoking of roles to other
 * roles.
 */
public interface IRoleManager
{

    /**
     * Supported options for CREATE ROLE/ALTER ROLE (and
     * CREATE USER/ALTER USER, which are aliases provided
     * for backwards compatibility).
     */
    public enum Option
    {
        SUPERUSER, PASSWORD, LOGIN, OPTIONS
    }

    /**
     * Set of options supported by CREATE ROLE and ALTER ROLE queries.
     * Should never return null - always return an empty set instead.
     */
    Set




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