com.github.f4b6a3.uuid.factory

Class UuidFactory

java.lang.Object

com.github.f4b6a3.uuid.factory.UuidFactory

Direct Known Subclasses:

AbstNameBasedFactory, AbstRandomBasedFactory, AbstTimeBasedFactory

public abstract class UuidFactory
extends Object

Abstract factory that is base for all UUID factories.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	UuidFactory.Parameters Parameters object to be used with a create(Parameters).

Field Summary

Fields

Modifier and Type	Field and Description
protected UuidVersion	version Version number.
protected long	versionMask Version bit mask.

Constructor Summary

Constructors

Constructor and Description
UuidFactory() Default Constructor.
UuidFactory(UuidVersion version) Constructor with a version number.

Method Summary

Modifier and Type	Method and Description
abstract UUID	create() Create a UUID
abstract UUID	create(UuidFactory.Parameters parameters) Creates a UUID using parameters.
UuidVersion	getVersion() Returns the version number for this factory.
protected static byte[]	nameBytes(byte[] name) Returns a copy of the input byte array.
protected static byte[]	nameBytes(String name) Converts a name string into a byte array.
protected static byte[]	namespaceBytes(String namespace) Converts a name space string into a byte array.
protected static byte[]	namespaceBytes(UUID namespace) Converts a name space UUID into a byte array.
protected static byte[]	namespaceBytes(UuidNamespace namespace) Converts a name space enumeration into a byte array.
protected UUID	toUuid(long msb, long lsb) Creates a UUID from a pair of numbers.

Methods inherited from class java.lang.Object

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

Field Detail

version

protected final UuidVersion version

Version number.

versionMask

protected final long versionMask

Version bit mask.

Constructor Detail

UuidFactory

public UuidFactory()

Default Constructor.

The version used is UuidVersion.VERSION_UNKNOWN.

UuidFactory

public UuidFactory(UuidVersion version)

Constructor with a version number.

Parameters:

version - a version number

Method Detail

getVersion

public UuidVersion getVersion()

Returns the version number for this factory.

Returns:

the version number

create

public abstract UUID create()

Create a UUID

Returns:

a UUID

create

public abstract UUID create(UuidFactory.Parameters parameters)

Creates a UUID using parameters.

Parameters:

parameters - parameters object

Returns:

a UUID

nameBytes

protected static byte[] nameBytes(byte[] name)

Returns a copy of the input byte array.

Parameters:

name - a name string

Returns:

a byte array

Throws:

IllegalArgumentException - if the input is null

nameBytes

protected static byte[] nameBytes(String name)

Converts a name string into a byte array.

Parameters:

name - a name string

Returns:

a byte array

Throws:

IllegalArgumentException - if the input is null

namespaceBytes

protected static byte[] namespaceBytes(UuidNamespace namespace)

Converts a name space enumeration into a byte array.

Parameters:

namespace - a name space enumeration

Returns:

a byte array

namespaceBytes

protected static byte[] namespaceBytes(UUID namespace)

Converts a name space UUID into a byte array.

Parameters:

namespace - a name space UUID

Returns:

a byte array

namespaceBytes

protected static byte[] namespaceBytes(String namespace)

Converts a name space string into a byte array.

Parameters:

namespace - a name space string

Returns:

a byte array

Throws:

InvalidUuidException - if the name space is invalid

toUuid

protected UUID toUuid(long msb,
                      long lsb)

Creates a UUID from a pair of numbers.

It applies the version and variant numbers to the resulting UUID.

Parameters:

msb - the most significant bits

lsb - the least significant bits

Returns:

a UUID