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.io;
  
  import java.io.IOException;
  
  import org.apache.lucene.store.IndexInput;
  import org.apache.lucene.store.RandomAccessInput;
  
  /**
   * {@link IndexInput} adapter that exposes it as a {@link RandomAccessInput}.
   */
  public class SeekingRandomAccessInput implements RandomAccessInput
  {
      private final IndexInput in;
  
      public SeekingRandomAccessInput(IndexInput in)
      {
          this.in = in;
      }
  
      @Override
      public byte readByte(long pos) throws IOException
      {
          in.seek(pos);
          return in.readByte();
      }
  
      @Override
      public short readShort(long pos) throws IOException
      {
          in.seek(pos);
          return in.readShort();
      }
  
      @Override
      public int readInt(long pos) throws IOException
      {
          in.seek(pos);
          return in.readInt();
      }
  
      @Override
      public long readLong(long pos) throws IOException
      {
          in.seek(pos);
          return in.readLong();
      }
  
      @Override
      public long length()
      {
          throw new UnsupportedOperationException("calling length() on SeekingRandomAccessInput not supported");
      }
  
      @Override
      public String toString()
      {
          return "SeekingRandomAccessInput(" + in + ')';
      }
  }
  