UUIDGen (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.utils.UUIDGen

```
public class UUIDGen
extends java.lang.Object
```
The goods are here: www.ietf.org/rfc/rfc4122.txt.

Field Summary

Fields
Modifier and Type Field Description

static int UUID_LEN

Constructor Summary

Constructors
Constructor Description

UUIDGen()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static byte[]`	`decompose(java.util.UUID uuid)`	decomposes a uuid into raw bytes.
`static long`	`getAdjustedTimestamp(java.util.UUID uuid)`	Returns a milliseconds-since-epoch value for a type-1 UUID.
`static java.util.UUID`	`getUUID(java.nio.ByteBuffer raw)`	creates a type 1 uuid from raw bytes.
`static java.nio.ByteBuffer`	`toByteBuffer(java.util.UUID uuid)`

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

- Field Detail
  - UUID_LEN
```
public static final int UUID_LEN
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - UUIDGen
```
public UUIDGen()
```
- Method Detail
  - getUUID
```
public static java.util.UUID getUUID(java.nio.ByteBuffer raw)
```
    creates a type 1 uuid from raw bytes.
  - toByteBuffer
```
public static java.nio.ByteBuffer toByteBuffer(java.util.UUID uuid)
```
  - decompose
```
public static byte[] decompose(java.util.UUID uuid)
```
    decomposes a uuid into raw bytes.
  - getAdjustedTimestamp
```
public static long getAdjustedTimestamp(java.util.UUID uuid)
```
    Returns a milliseconds-since-epoch value for a type-1 UUID.
    
    Parameters:
    
    uuid - a type-1 (time-based) UUID
    
    Returns:
    
    the number of milliseconds since the unix epoch
    
    Throws:
    
    java.lang.IllegalArgumentException - if the UUID is not version 1