com.github.f4b6a3.uuid.factory

Class AbstNameBasedFactory

java.lang.Object

com.github.f4b6a3.uuid.factory.UuidFactory

com.github.f4b6a3.uuid.factory.AbstNameBasedFactory

Direct Known Subclasses:

NameBasedMd5Factory, NameBasedSha1Factory

public abstract class AbstNameBasedFactory
extends UuidFactory

Abstract factory for creating name-based unique identifiers (UUIDv3 and UUIDv5). The name space is optional for compatibility with the JDK's UUID method for generating UUIDv3, which is UUID.nameUUIDFromBytes(byte[]).

See Also:

UuidNamespace, RFC 9562

Nested Class Summary

Nested classes/interfaces inherited from class com.github.f4b6a3.uuid.factory.UuidFactory

UuidFactory.Parameters

Field Summary

Fields

Modifier and Type	Field and Description
protected String	algorithm The hash algorithm.
protected static String	ALGORITHM_MD5 The MD5 algorithm.
protected static String	ALGORITHM_SHA1 The SHA-1 algorithm.
protected byte[]	namespace The namespace (optional).

Fields inherited from class com.github.f4b6a3.uuid.factory.UuidFactory

version, versionMask

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstNameBasedFactory(UuidVersion version, String algorithm, byte[] namespace) Protected constructor that receives the message digest algorithm and an optional name space.

Method Summary

Modifier and Type	Method and Description
UUID	create() Create a UUID
UUID	create(byte[] name) Returns a name-based UUID.
UUID	create(String name) Returns a name-based UUID.
UUID	create(String namespace, byte[] name) Returns a name-based UUID.
UUID	create(String namespace, String name) Returns a name-based UUID.
UUID	create(UUID namespace, byte[] name) Returns a name-based UUID.
UUID	create(UuidFactory.Parameters parameters) Creates a UUID using parameters.
UUID	create(UuidNamespace namespace, byte[] name) Returns a name-based UUID.
UUID	create(UuidNamespace namespace, String name) Returns a name-based UUID.
UUID	create(UUID namespace, String name) Returns a name-based UUID.

Methods inherited from class com.github.f4b6a3.uuid.factory.UuidFactory

getVersion, nameBytes, nameBytes, namespaceBytes, namespaceBytes, namespaceBytes, toUuid

Methods inherited from class java.lang.Object

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

Field Detail

namespace

protected byte[] namespace

The namespace (optional).

algorithm

protected final String algorithm

The hash algorithm.

ALGORITHM_MD5

protected static final String ALGORITHM_MD5

The MD5 algorithm.

See Also:

Constant Field Values

ALGORITHM_SHA1

protected static final String ALGORITHM_SHA1

The SHA-1 algorithm.

See Also:

Constant Field Values

Constructor Detail

AbstNameBasedFactory

protected AbstNameBasedFactory(UuidVersion version,
                               String algorithm,
                               byte[] namespace)

Protected constructor that receives the message digest algorithm and an optional name space.

Parameters:

version - the version number (3 or 5)

algorithm - a message digest algorithm (MD5 or SHA-1)

namespace - a name space byte array (null or 16 bytes)

Method Detail

create

public UUID create(byte[] name)

Returns a name-based UUID.

Parameters:

name - a byte array

Returns:

a name-based UUID

Throws:

NullPointerException - if name is null

create

public UUID create(String name)

Returns a name-based UUID. The name string is encoded into a sequence of bytes using UTF-8.

Parameters:

name - a string

Returns:

a name-based UUID

Throws:

NullPointerException - if name is null

create

public UUID create(UUID namespace,
                   byte[] name)

Returns a name-based UUID.

Parameters:

namespace - a name space UUID

name - a byte array

Returns:

a name-based UUID

Throws:

IllegalArgumentException - if name is null

create

public UUID create(UUID namespace,
                   String name)

Returns a name-based UUID. The name string is encoded into a sequence of bytes using UTF-8.

Parameters:

namespace - a name space UUID

name - a string

Returns:

a name-based UUID

Throws:

NullPointerException - if name is null

create

public UUID create(String namespace,
                   byte[] name)

Returns a name-based UUID.

Parameters:

namespace - a name space string

name - a byte array

Returns:

a name-based UUID

Throws:

NullPointerException - if name is null

InvalidUuidException - if the name space is invalid

See Also:

InvalidUuidException

create

public UUID create(String namespace,
                   String name)

Returns a name-based UUID.

The name string is encoded into a sequence of bytes using UTF-8.

Parameters:

namespace - a name space string

name - a string

Returns:

a name-based UUID

Throws:

NullPointerException - if name is null

InvalidUuidException - if the name space is invalid

See Also:

InvalidUuidException

create

public UUID create(UuidNamespace namespace,
                   byte[] name)

Returns a name-based UUID.

Parameters:

namespace - a name space enumeration

name - a byte array

Returns:

a name-based UUID

Throws:

NullPointerException - if name is null

create

public UUID create(UuidNamespace namespace,
                   String name)

Returns a name-based UUID.

The name string is encoded into a sequence of bytes using UTF-8.

Parameters:

namespace - a name space enumeration

name - a string

Returns:

a name-based UUID

Throws:

NullPointerException - if name is null

create

public UUID create()

Description copied from class: UuidFactory

Create a UUID

Specified by:

create in class UuidFactory

Returns:

a UUID

create

public UUID create(UuidFactory.Parameters parameters)

Description copied from class: UuidFactory

Creates a UUID using parameters.

Specified by:

create in class UuidFactory

Parameters:

parameters - parameters object

Returns:

a UUID