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.type;

import com.datastax.oss.protocol.internal.ProtocolConstants;
import edu.umd.cs.findbugs.annotations.NonNull;

public interface CustomType extends DataType {
  
The fully qualified name of the subtype of org.apache.cassandra.db.marshal.AbstractType that represents this type server-side. 
/**
   * The fully qualified name of the subtype of {@code org.apache.cassandra.db.marshal.AbstractType}
   * that represents this type server-side.
   */
  @NonNull
  String getClassName();

  @NonNull
  @Override
  default String asCql(boolean includeFrozen, boolean pretty) {
    return String.format("'%s'", getClassName());
  }

  @Override
  default int getProtocolCode() {
    return ProtocolConstants.DataType.CUSTOM;
  }
}