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A driver for Apache Cassandra 1.2+ that works exclusively with the Cassandra Query Language version 3 (CQL3) and Cassandra's binary protocol.

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/*
 *      Copyright (C) 2012 DataStax Inc.
 *
 *   Licensed 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 com.datastax.driver.core;

import java.net.InetSocketAddress;

import com.datastax.driver.core.exceptions.AuthenticationException;

/**
 * Provides {@link Authenticator} instances for use when connecting
 * to Cassandra nodes.
 *
 * See {@link PlainTextAuthProvider} for an implementation which uses SASL
 * PLAIN mechanism to authenticate using username/password strings
 */
public interface AuthProvider {

    /**
     * A provider that provides no authentication capability.
     * 

* This is only useful as a placeholder when no authentication is to be used. */ public static final AuthProvider NONE = new AuthProvider() { public Authenticator newAuthenticator(InetSocketAddress host) { throw new AuthenticationException(host, String.format("Host %s requires authentication, but no authenticator found in Cluster configuration", host)); } }; /** * The {@code Authenticator} to use when connecting to {@code host} * * @param host the Cassandra host to connect to. * @return The authentication implementation to use. */ public Authenticator newAuthenticator(InetSocketAddress host) throws AuthenticationException; }





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