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.servererrors;

import edu.umd.cs.findbugs.annotations.NonNull;


The type of a Cassandra write query.

This information is returned by Cassandra when a write timeout is raised, to indicate what
type of write timed out. It is useful to decide which retry decision to adopt.

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 WriteTypes are DefaultWriteType instances. 
/**
 * The type of a Cassandra write query.
 *
 * <p>This information is returned by Cassandra when a write timeout is raised, to indicate what
 * type of write timed out. It is useful to decide which retry decision to adopt.
 *
 * <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 WriteType}s are {@link DefaultWriteType} instances.
 */
public interface WriteType {

  WriteType SIMPLE = DefaultWriteType.SIMPLE;
  WriteType BATCH = DefaultWriteType.BATCH;
  WriteType UNLOGGED_BATCH = DefaultWriteType.UNLOGGED_BATCH;
  WriteType COUNTER = DefaultWriteType.COUNTER;
  WriteType BATCH_LOG = DefaultWriteType.BATCH_LOG;
  WriteType CAS = DefaultWriteType.CAS;
  WriteType VIEW = DefaultWriteType.VIEW;
  WriteType CDC = DefaultWriteType.CDC;

  
The textual representation that the write type is encoded to in protocol frames. 
/** The textual representation that the write type is encoded to in protocol frames. */
  @NonNull
  String name();
}