org.apache.arrow.memory.util.hash

Interface ArrowBufHasher

All Known Implementing Classes:

MurmurHasher, SimpleHasher

public interface ArrowBufHasher

Utility for calculating the hash code for a consecutive memory region. This class provides the basic framework for efficiently calculating the hash code.

A default light-weight implementation is given in SimpleHasher.

Method Summary

Modifier and Type	Method and Description
int	hashCode(ArrowBuf buf, long offset, long length) Calculates the hash code for a memory region.
int	hashCode(long address, long length) Calculates the hash code for a memory region.

Method Detail

hashCode

int hashCode(long address,
             long length)

Calculates the hash code for a memory region.

Parameters:

address - start address of the memory region.

length - length of the memory region.

Returns:

the hash code.

hashCode

int hashCode(ArrowBuf buf,
             long offset,
             long length)

Calculates the hash code for a memory region.

Parameters:

buf - the buffer for the memory region.

offset - offset within the buffer for the memory region.

length - length of the memory region.

Returns:

the hash code.