Package org.helidb.lang.hasher

The Hasher interface used by the BPlusTree and some implementations of it.

See:
Description

Interface Summary

Hasher<V,H extends Comparable<H>>

A Hasher is used for converting values into a hash.

Class Summary

AbstractMessageDigestStringHasher<H extends Comparable<H>>	This is an abstract base class for String Hasher:s that use a MessageDigest to produce the hash.
CharacterToCharacterHasher	This is a value-preserving Character hasher.
ConstantSizeValueHasher<T extends Comparable<T>>	This is a generic value-preserving Hasher.
HasherSupport	This class contains static utility methods used by Hasher implementations.
IntegerToIntegerHasher	This is a value-preserving Integer hasher.
LongToLongHasher	This is a value-preserving Long hasher.
ShortToShortHasher	This is a value-preserving Short hasher.
StringToBigIntegerHasher	This Hasher uses a MessageDigest object with a configurable hash algorithm to produce a hash of a configurable length from a String.
StringToLongHasher	This Hasher uses a MessageDigest object with a configurable hash algorithm to produce an eight bytes long hash from a String.

Exception Summary

HashException

This unchecked exception is used to wrap other exceptions that may occur when hashing an object.

Package org.helidb.lang.hasher Description

The Hasher interface used by the BPlusTree and some implementations of it.

Author:

Karl Gustafsson