content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.cassandra.db;
  
  
  import java.nio.ByteBuffer;
  
  import org.apache.cassandra.db.marshal.ByteArrayAccessor;
  import org.apache.cassandra.db.marshal.ValueAccessor;
  
  public abstract class AbstractArrayClusteringPrefix extends AbstractOnHeapClusteringPrefix<byte[]>
  {
      public static final byte[][] EMPTY_VALUES_ARRAY = new byte[0][];
  
      public AbstractArrayClusteringPrefix(Kind kind, byte[][] values)
      {
          super(kind, values);
      }
  
      public ValueAccessor<byte[]> accessor()
      {
          return ByteArrayAccessor.instance;
      }
  
      public ByteBuffer[] getBufferArray()
      {
          ByteBuffer[] out = new ByteBuffer[values.length];
          for (int i = 0; i < values.length; i++)
          {
              // Compact tables allowed null clustering elements, so take those into account: 
              out[i] = values[i] == null ? null : ByteBuffer.wrap(values[i]);
          }
          return out;
      }
  
      @Override
      public ClusteringPrefix<byte[]> retainable()
      {
          return this;
      }
  }
  