LongUuid (Waarp Common 3.0.12 API Reference)

java.lang.Object
- org.waarp.common.utility.LongUuid

```
public final class LongUuid
extends Object
```
UUID Generator (also Global UUID Generator) but limited to 1 Long (64 bits)

Inspired from com.groupon locality-uuid which used combination of internal counter value - process id - and Timestamp. see https://github.com/groupon/locality-uuid.java

But force sequence and take care of errors and improves some performance issues

Author:

"Frederic Bregier"

Constructor Summary

Constructors
Constructor and Description
`LongUuid()` Constructor that generates a new UUID using the current process id, MAC address, and timestamp
`LongUuid(byte[] bytes)` Constructor that takes a byte array as this UUID's content
`LongUuid(long value)`
`LongUuid(String idsource)`

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`equals(Object o)`
`byte[]`	`getBytes()` copy the uuid of this UUID, so that it can't be changed, and return it
`long`	`getLong()`
`int`	`getProcessId()` extract process id from raw UUID bytes and return as int
`static byte[]`	`getRandom(int length)`
`long`	`getTimestamp()` extract timestamp from raw UUID bytes and return as int
`int`	`hashCode()`
`static int`	`jvmProcessId()`
`static void`	`main(String[] args)`
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - LongUuid
```
public LongUuid()
```
    Constructor that generates a new UUID using the current process id, MAC address, and timestamp
  - LongUuid
```
public LongUuid(byte[] bytes)
```
    Constructor that takes a byte array as this UUID's content
    
    Parameters:
    bytes - UUID content
  - LongUuid
```
public LongUuid(long value)
```
  - LongUuid
```
public LongUuid(String idsource)
```
- Method Detail
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - getBytes
```
public byte[] getBytes()
```
    copy the uuid of this UUID, so that it can't be changed, and return it
    
    Returns:
    raw byte array of UUID
  - getProcessId
```
public int getProcessId()
```
    extract process id from raw UUID bytes and return as int
    
    Returns:
    id of process that generated the UUID
  - getTimestamp
```
public long getTimestamp()
```
    extract timestamp from raw UUID bytes and return as int
    
    Returns:
    millisecond UTC timestamp from generation of the UUID
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - getLong
```
public long getLong()
```
    Returns:
    the equivalent UUID as long
  - getRandom
```
public static final byte[] getRandom(int length)
```
    Parameters:
    length -
    
    Returns:
    a byte array with random values
  - jvmProcessId
```
public static int jvmProcessId()
```
  - main
```
public static void main(String[] args)
```

Class LongUuid

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

LongUuid

LongUuid

LongUuid

LongUuid

Method Detail

toString

getBytes

getProcessId

getTimestamp

equals

hashCode

getLong

getRandom

jvmProcessId

main