Package org.apache.commons.id

This package contains factories and implementation classes to generate unique identifiers.

See:
Description

Interface Summary

IdentifierGenerator	IdentifierGenerator defines a simple interface for identifier generation.
LongIdentifierGenerator	LongIdentifier defines a simple interface for Long based identifier generation.
StringIdentifierGenerator	StringIdentifierGenerator defines a simple interface for String based identifier generation.

Class Summary

AbstractLongIdentifierGenerator	Abstract superclass for LongIdentifierGenerator implementations.
AbstractStringIdentifierGenerator	Abstract superclass for StringIdentifierGenerator implementations.
CompositeIdentifierGenerator	Identifier generator that concatenates the results of a list of string identifier generators.
ConstantIdentifierGenerator	StringIdentifierGenerator that always returns the same string.
DigestUtils	Operations to simplifiy common MessageDigest tasks.
Hex	Hex encoder and decoder.

Exception Summary

DecoderException	Thrown when a Decoder has encountered a failure condition during a decode.
EncoderException	Thrown when there is a failure condition during the encoding process.

Package org.apache.commons.id Description

This package contains factories and implementation classes to generate unique identifiers.

The implementation is divided into the following subpackages.

• The main package contains uid interface definitions, abstract base classes for identifier generators, generator factories and an IdentifierUtils convenience class that maintains singleton generators and exposes static methods for generating identifiers of the various kinds.
• The random subpackage contains implementations of generators that return identifiers that appear to be random.
• The serial subpackage contains generators that yield sequences of identifiers that follow a regular sequence (e.g., increasing numeric values).
• The uuid subpackage contains implementations of the IETF Draft UUID specification