com.sparkutils.quality.impl.bloom.parquet.XxHash.scala Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of quality_2.4_2.11 Show documentation

A Spark library for managing in-process data quality rules via Spark SQL

The newest version!

package com.sparkutils.quality.impl.bloom.parquet

import net.openhft.hashing.LongHashFunction
import java.nio.ByteBuffer

/*
 * 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.
 */


/**
 * The implementation of HashFunction interface. The XxHash uses XXH64 version xxHash
 * with a seed of 0.
 */
class XxHash extends HashFunction with Serializable {
  def hashBytes(input: Array[Byte]): Long = LongHashFunction.xx(0).hashBytes(input)

  def hashLongs(input: Array[Long]): Long = LongHashFunction.xx(0).hashLongs(input)

  def hashByteBuffer(input: ByteBuffer): Long = LongHashFunction.xx(0).hashBytes(input)

  def hashChars(input: String): Long =  LongHashFunction.xx(0).hashChars(input)
}