https://github.com/datastax/java-driver/java-driver-core: A driver for Apache Cassandra(R) 2.1+ that works exclusively with the Cassandra Query Language version 3 (CQL3) and Cassandra's native protocol versions 3 and above.
  • Various (DataStax) 
/*
 * 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.data;

import com.datastax.oss.driver.api.core.DefaultProtocolVersion;
import com.datastax.oss.driver.api.core.ProtocolVersion;
import com.datastax.oss.driver.api.core.detach.Detachable;
import com.datastax.oss.driver.api.core.type.codec.registry.CodecRegistry;
import edu.umd.cs.findbugs.annotations.NonNull;


A data structure containing CQL values. 
/** A data structure containing CQL values. */
public interface Data {

  
Returns the registry of all the codecs currently available to convert values for this instance.

If you obtained this object from the driver, this will be set automatically. If you created it manually, or just deserialized it, it is set to CodecRegistry.DEFAULT. You can reattach this object to an existing driver instance to use its codec registry. 
See Also:
/**
   * Returns the registry of all the codecs currently available to convert values for this instance.
   *
   * <p>If you obtained this object from the driver, this will be set automatically. If you created
   * it manually, or just deserialized it, it is set to {@link CodecRegistry#DEFAULT}. You can
   * reattach this object to an existing driver instance to use its codec registry.
   *
   * @see Detachable
   */
  @NonNull
  CodecRegistry codecRegistry();

  
Returns the protocol version that is currently used to convert values for this instance.

If you obtained this object from the driver, this will be set automatically. If you created it manually, or just deserialized it, it is set to ProtocolVersion.DEFAULT. You can reattach this object to an existing driver instance to use its protocol version. 
See Also:
/**
   * Returns the protocol version that is currently used to convert values for this instance.
   *
   * <p>If you obtained this object from the driver, this will be set automatically. If you created
   * it manually, or just deserialized it, it is set to {@link DefaultProtocolVersion#DEFAULT}. You
   * can reattach this object to an existing driver instance to use its protocol version.
   *
   * @see Detachable
   */
  @NonNull
  ProtocolVersion protocolVersion();
}