/*
 * Copyright 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.oss.driver.api.core;

import com.datastax.oss.driver.api.core.detach.Detachable;
import edu.umd.cs.findbugs.annotations.NonNull;

A version of the native protocol used by the driver to communicate with the server.
The only reason to model this as an interface (as opposed to an enum type) is to accommodate for custom protocol extensions. If you're connecting to a standard Apache Cassandra cluster, all ProtocolVersions are DefaultProtocolVersion instances. /**
 * A version of the native protocol used by the driver to communicate with the server.
 *
 * <p>The only reason to model this as an interface (as opposed to an enum type) is to accommodate
 * for custom protocol extensions. If you're connecting to a standard Apache Cassandra cluster, all
 * {@code ProtocolVersion}s are {@link DefaultProtocolVersion} instances.
 */
public interface ProtocolVersion {

  ProtocolVersion V3 = DefaultProtocolVersion.V3;
  ProtocolVersion V4 = DefaultProtocolVersion.V4;
  ProtocolVersion V5 = DefaultProtocolVersion.V5;

  
The default version used for detached objects. /** The default version used for {@link Detachable detached} objects. */
  // Implementation note: we can't use the ProtocolVersionRegistry here, this has to be a
  // compile-time constant.
  ProtocolVersion DEFAULT = DefaultProtocolVersion.V4;

  
A numeric code that uniquely identifies the version (this is the code used in network frames).
/**
   * A numeric code that uniquely identifies the version (this is the code used in network frames).
   */
  int getCode();

  
A string representation of the version. /** A string representation of the version. */
  @NonNull
  String name();

  
Whether the protocol version is in a beta status.
Beta versions are intended for Cassandra development. They should not be used in a regular
application, as beta features may break at any point.
/**
   * Whether the protocol version is in a beta status.
   *
   * <p>Beta versions are intended for Cassandra development. They should not be used in a regular
   * application, as beta features may break at any point.
   */
  boolean isBeta();
}