org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryLong Maven / Gradle / Ivy

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/*
 * 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.hive.serde2.lazybinary;

import org.apache.hadoop.hive.serde2.lazy.ByteArrayRef;
import org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryUtils.VLong;
import org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableLongObjectInspector;
import org.apache.hadoop.io.LongWritable;

/**
 * LazyBinaryObject for long which stores as VLong.
 * 
 * @see LazyBinaryUtils#readVLong(byte[], int, VLong)
 */
public class LazyBinaryLong extends
    LazyBinaryPrimitive {

  LazyBinaryLong(WritableLongObjectInspector oi) {
    super(oi);
    data = new LongWritable();
  }

  LazyBinaryLong(LazyBinaryLong copy) {
    super(copy);
    data = new LongWritable(copy.data.get());
  }

  /**
   * The reusable vLong for decoding the long.
   */
  VLong vLong = new LazyBinaryUtils.VLong();

  @Override
  public void init(ByteArrayRef bytes, int start, int length) {
    LazyBinaryUtils.readVLong(bytes.getData(), start, vLong);
    assert (length == vLong.length);
    data.set(vLong.value);
  }
}