com.enremmeta.util

Class InsecureUuid

java.lang.Object

com.enremmeta.util.InsecureUuid

public final class InsecureUuid
extends Object

Without synchronization, because who cares but this is faster.

Author:

Gregory Golberg (grisha@alum.mit.edu) Copyright © Enremmeta LLC 2015. All Rights Reserved.

Field Summary

Fields

Modifier and Type	Field and Description
private long	leastSigBits
private long	mostSigBits

Constructor Summary

Constructors

Modifier	Constructor and Description
private	InsecureUuid(byte[] data)

Method Summary

Modifier and Type	Method and Description
private static String	digits(long val, int digits) Returns val represented by the specified number of hex digits.
static String	getId()
static InsecureUuid	randomInsecureUuid() Static factory to retrieve a type 4 (pseudo randomly generated) UUID.
String	toString() Returns a String object representing this UUID.

Methods inherited from class java.lang.Object

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

Field Detail

mostSigBits

private final long mostSigBits

leastSigBits

private final long leastSigBits

Constructor Detail

InsecureUuid

private InsecureUuid(byte[] data)

Method Detail

getId

public static String getId()

randomInsecureUuid

public static InsecureUuid randomInsecureUuid()

Static factory to retrieve a type 4 (pseudo randomly generated) UUID.

Returns:

A randomly generated UUID

toString

public String toString()

Returns a String object representing this UUID.

The UUID string representation is as described by this BNF:

 
 UUID                   = <time_low> "-" <time_mid> "-"
                          <time_high_and_version> "-"
                          <variant_and_sequence> "-"
                          <node>
 time_low               = 4*<hexOctet>
 time_mid               = 2*<hexOctet>
 time_high_and_version  = 2*<hexOctet>
 variant_and_sequence   = 2*<hexOctet>
 node                   = 6*<hexOctet>
 hexOctet               = <hexDigit><hexDigit>
 hexDigit               =
       "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"
       | "a" | "b" | "c" | "d" | "e" | "f"
       | "A" | "B" | "C" | "D" | "E" | "F"
 
 

Overrides:

toString in class Object

Returns:

A string representation of this UUID

digits

private static String digits(long val,
                             int digits)

Returns val represented by the specified number of hex digits.