UUIDGenerator (OpenJPA Parent POM 4.0.0 API)

java.lang.Object
- org.apache.openjpa.lib.util.UUIDGenerator

```
public class UUIDGenerator
extends java.lang.Object
```
UUID value generator. Type 1 generator is based on the time-based generator in the Apache Commons Id project: http://jakarta.apache.org/commons/sandbox /id/uuid.html The type 4 generator uses the standard Java UUID generator. The type 1 code has been vastly simplified and modified to replace the ethernet address of the host machine with the IP, since we do not want to require native libs and Java cannot access the MAC address directly. In spirit, implements the IETF UUID draft specification, found here:
http://www1.ics.uci.edu/~ejw/authoring/uuid-guid/draft-leach-uuids-guids-01 .txt

Since:

0.3.3

Author:

Abe White, Kevin Sutter

Field Summary

Fields
Modifier and Type Field Description

static int TYPE1

static int TYPE4

Constructor Summary

Constructors
Constructor Description

UUIDGenerator()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static byte[]`	`createType1()`
`static byte[]`	`next(int type)`	Return a unique UUID value.
`static java.lang.String`	`nextHex(int type)`	Return the next unique uuid value as a 32-character hex string.
`static java.lang.String`	`nextString(int type)`	Return the next unique uuid value as a 16-character string.

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

- Field Detail
  - TYPE1
```
public static final int TYPE1
```
    See Also:
    
    Constant Field Values
  - TYPE4
```
public static final int TYPE4
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - UUIDGenerator
```
public UUIDGenerator()
```
- Method Detail
  - next
```
public static byte[] next(int type)
```
    Return a unique UUID value.
  - createType1
```
public static byte[] createType1()
```
  - nextString
```
public static java.lang.String nextString(int type)
```
    Return the next unique uuid value as a 16-character string.
  - nextHex
```
public static java.lang.String nextHex(int type)
```
    Return the next unique uuid value as a 32-character hex string.