com.github.f4b6a3.uuid.codec.other

Class DotNetGuid1Codec

java.lang.Object

com.github.f4b6a3.uuid.codec.other.DotNetGuid1Codec

All Implemented Interfaces:

UuidCodec<UUID>

public class DotNetGuid1Codec
extends Object
implements UuidCodec<UUID>

Codec for time-based .Net Guids.

Field Summary

Fields

Modifier and Type	Field and Description
static DotNetGuid1Codec	INSTANCE A shared immutable instance.

Constructor Summary

Constructors

Constructor and Description
DotNetGuid1Codec()

Method Summary

Modifier and Type	Method and Description
UUID	decode(UUID uuid) Get a time-based UUID (v4) from a .Net Guid.
UUID	encode(UUID uuid) Get a .Ned Guid from a time-based UUID (v1).
protected static UUID	toAndFromDotNetGuid(UUID uuid) Convert a UUID to and from a .Net Guid.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final DotNetGuid1Codec INSTANCE

A shared immutable instance.

Constructor Detail

DotNetGuid1Codec

public DotNetGuid1Codec()

Method Detail

encode

public UUID encode(UUID uuid)

Get a .Ned Guid from a time-based UUID (v1).

This codec converts a time-based UUID (v1) to a .Net Guid.

It rearranges the most significant bytes from big-endian to little-endian, and vice-versa.

The .Net Guid stores the most significant bytes as little-endian, while the least significant bytes are stored as big-endian (network order).

Specified by:

encode in interface UuidCodec<UUID>

Parameters:

uuid - a UUID

Returns:

another UUID

Throws:

InvalidUuidException - if the argument is invalid

decode

public UUID decode(UUID uuid)

Get a time-based UUID (v4) from a .Net Guid.

It rearranges the most significant bytes from big-endian to little-endian, and vice-versa.

The .Net Guid stores the most significant bytes as little-endian, while the least significant bytes are stored as big-endian (network order).

Specified by:

decode in interface UuidCodec<UUID>

Parameters:

uuid - a UUID

Returns:

another UUID

Throws:

InvalidUuidException - if the argument is invalid

toAndFromDotNetGuid

protected static UUID toAndFromDotNetGuid(UUID uuid)

Convert a UUID to and from a .Net Guid.

It rearranges the most significant bytes from big-endian to little-endian, and vice-versa.

The .Net Guid stores the most significant bytes as little-endian, while the least significant bytes are stored as big-endian (network order).

Parameters:

uuid - a UUID

Returns:

another UUID

See Also:

How to Generate Sequential GUIDs for SQL Server in .NET, How are GUIDs sorted by SQL Server?