Package de.hybris.platform.util

Class MurmurHash

  • public final class MurmurHash
extends java.lang.Object
    MurmurHash java implementation from http://d3s.mff.cuni.cz/~holub/sw/javamurmurhash/

    • Constructor Summary

      Constructors 
      Constructor Description
      MurmurHash()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static int hash32​(byte[] data, int length)
      Generates 32 bit hash from byte array with default seed value.
      static int hash32​(byte[] data, int length, int seed)
      Generates 32 bit hash from byte array of the given length and seed.
      static int hash32​(java.lang.String text)
      Generates 32 bit hash from a string.
      static int hash32​(java.lang.String text, int from, int length)
      Generates 32 bit hash from a substring.
      static long hash64​(byte[] data, int length)
      Generates 64 bit hash from byte array with default seed value.
      static long hash64​(byte[] data, int length, int seed)
      Generates 64 bit hash from byte array of the given length and seed.
      static long hash64​(java.lang.String text)
      Generates 64 bit hash from a string.
      static long hash64​(java.lang.String text, int from, int length)
      Generates 64 bit hash from a substring.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • MurmurHash

        public MurmurHash()

    • Method Detail

      • hash32

        public static int hash32​(byte[] data,
                         int length,
                         int seed)
        Generates 32 bit hash from byte array of the given length and seed.
        Parameters:
        data - byte array to hash
        length - length of the array to hash
        seed - initial seed value
        Returns:
        32 bit hash of the given array

      • hash32

        public static int hash32​(byte[] data,
                         int length)
        Generates 32 bit hash from byte array with default seed value.
        Parameters:
        data - byte array to hash
        length - length of the array to hash
        Returns:
        32 bit hash of the given array

      • hash32

        public static int hash32​(java.lang.String text)
        Generates 32 bit hash from a string.
        Parameters:
        text - string to hash
        Returns:
        32 bit hash of the given string

      • hash32

        public static int hash32​(java.lang.String text,
                         int from,
                         int length)
        Generates 32 bit hash from a substring.
        Parameters:
        text - string to hash
        from - starting index
        length - length of the substring to hash
        Returns:
        32 bit hash of the given string

      • hash64

        public static long hash64​(byte[] data,
                          int length,
                          int seed)
        Generates 64 bit hash from byte array of the given length and seed.
        Parameters:
        data - byte array to hash
        length - length of the array to hash
        seed - initial seed value
        Returns:
        64 bit hash of the given array

      • hash64

        public static long hash64​(byte[] data,
                          int length)
        Generates 64 bit hash from byte array with default seed value.
        Parameters:
        data - byte array to hash
        length - length of the array to hash
        Returns:
        64 bit hash of the given string

      • hash64

        public static long hash64​(java.lang.String text)
        Generates 64 bit hash from a string.
        Parameters:
        text - string to hash
        Returns:
        64 bit hash of the given string

      • hash64

        public static long hash64​(java.lang.String text,
                          int from,
                          int length)
        Generates 64 bit hash from a substring.
        Parameters:
        text - string to hash
        from - starting index
        length - length of the substring to hash
        Returns:
        64 bit hash of the given array