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.
 */

Infrastructure to execute internal requests in the driver, for example control connection
queries, or automatic statement preparation.

This is a stripped-down version of the public API, with the bare minimum for our needs:

    
  
  • async mode only.
  
  • execution on a given channel, without retries.
  
  • QUERY and PREPARE messages only. 
  • paging is possible, but only on the same channel. If the channel gets closed between pages,
      the query fails.
  
  • values can only be bound by name, and it is assumed that the target type can always be inferred unambiguously (i.e. the only integer type is int, etc). 
  • limited result API: getters by internal name only, no custom codecs.
  
  • codecs are only implemented for the types we actually need for admin queries.



/**
 * Infrastructure to execute internal requests in the driver, for example control connection
 * queries, or automatic statement preparation.
 *
 * <p>This is a stripped-down version of the public API, with the bare minimum for our needs:
 *
 * <ul>
 *   <li>async mode only.
 *   <li>execution on a given channel, without retries.
 *   <li>{@code QUERY} and {@code PREPARE} messages only.
 *   <li>paging is possible, but only on the same channel. If the channel gets closed between pages,
 *       the query fails.
 *   <li>values can only be bound by name, and it is assumed that the target type can always be
 *       inferred unambiguously (i.e. the only integer type is {@code int}, etc).
 *   <li>limited result API: getters by internal name only, no custom codecs.
 *   <li>codecs are only implemented for the types we actually need for admin queries.
 * </ul>
 */
package com.datastax.oss.driver.internal.core.adminrequest;