/**
    * 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.hadoop.hbase.types;
  
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.classification.InterfaceStability;
  import org.apache.hadoop.hbase.util.Bytes;
  import org.apache.hadoop.hbase.util.Order;
  import org.apache.hadoop.hbase.util.PositionedByteRange;
  
  /**
   * An {@code DataType} for interacting with values encoded using
   * {@link Bytes#putShort(byte[], int, short)}. Intended to make it easier to
   * transition away from direct use of {@link Bytes}.
   * @see Bytes#putShort(byte[], int, short)
   * @see Bytes#toShort(byte[])
   */
  @InterfaceAudience.Public
  @InterfaceStability.Evolving
  public class RawShort implements DataType<Short> {
  
    @Override
    public boolean isOrderPreserving() { return false; }
  
    @Override
    public Order getOrder() { return null; }
  
    @Override
    public boolean isNullable() { return false; }
  
    @Override
    public boolean isSkippable() { return true; }
  
    @Override
    public int encodedLength(Short val) { return Bytes.SIZEOF_SHORT; }
  
    @Override
    public Class<Short> encodedClass() { return Short.class; }
  
    @Override
    public int skip(PositionedByteRange src) {
      src.setPosition(src.getPosition() + Bytes.SIZEOF_SHORT);
      return Bytes.SIZEOF_SHORT;
    }
  
    @Override
    public Short decode(PositionedByteRange src) {
      short val = Bytes.toShort(src.getBytes(), src.getOffset() + src.getPosition());
      skip(src);
      return val;
    }
  
    @Override
    public int encode(PositionedByteRange dst, Short val) {
      Bytes.putShort(dst.getBytes(), dst.getOffset() + dst.getPosition(), val);
      return skip(dst);
    }
  
    /**
     * Read a {@code short} value from the buffer {@code buff}.
     */
    public short decodeShort(byte[] buff, int offset) {
      return Bytes.toShort(buff, offset);
    }
  
    /**
     * Write instance {@code val} into buffer {@code buff}.
     */
    public int encodeShort(byte[] buff, int offset, short val) {
      return Bytes.putShort(buff, offset, val);
    }
  }