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.index.sai.disk.v1.postings;
  
  import org.apache.cassandra.index.sai.postings.PostingList;
  import org.apache.lucene.util.packed.PackedLongValues;
  
  /**
   * Adapter class for {@link PackedLongValues} to expose it as {@link PostingList}.
   */
  public class PackedLongsPostingList implements PostingList
  {
      private final PackedLongValues.Iterator iterator;
      private final PackedLongValues values;
  
      public PackedLongsPostingList(PackedLongValues values)
      {
          this.values = values;
          iterator = values.iterator();
      }
  
      @Override
      public long nextPosting()
      {
          if (iterator.hasNext())
          {
              return iterator.next();
          }
          else
          {
              return PostingList.END_OF_STREAM;
          }
      }
  
      @Override
      public long size()
      {
          return values.size();
      }
  
      @Override
      public long advance(long targetRowID)
      {
          throw new UnsupportedOperationException();
      }
  }
  
  