UUIDGenerationStrategy (hibernate-core JavaDocs)

All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

CustomVersionOneStrategy, StandardRandomStrategy
```
public interface UUIDGenerationStrategy
extends java.io.Serializable
```
A strategy for generating a variant 2 UUID value.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.util.UUID`	`generateUUID(SharedSessionContractImplementor session)`	Generate the UUID.
`int`	`getGeneratedVersion()`	Which variant, according to IETF RFC 4122, of UUID does this strategy generate? RFC 4122 defines 5 variants (though it only describes algorithms to generate 4): 1 = time based 2 = DCE based using POSIX UIDs 3 = name based (md5 hash) 4 = random numbers based 5 = name based (sha-1 hash) Returning the values above should be reserved to those generators creating variants compliant with the corresponding RFC definition; others can feel free to return other values as they see fit.

- Method Detail
  - getGeneratedVersion
```
int getGeneratedVersion()
```
    Which variant, according to IETF RFC 4122, of UUID does this strategy generate? RFC 4122 defines 5 variants (though it only describes algorithms to generate 4):
    
    1 = time based
    
    2 = DCE based using POSIX UIDs
    
    3 = name based (md5 hash)
    
    4 = random numbers based
    
    5 = name based (sha-1 hash)
    
    Returning the values above should be reserved to those generators creating variants compliant with the corresponding RFC definition; others can feel free to return other values as they see fit.
    Informational only, and not used at this time.
    Returns:
    
    The supported generation version
  - generateUUID
```
java.util.UUID generateUUID(SharedSessionContractImplementor session)
```
    Generate the UUID.
    
    Parameters:
    
    session - The session asking for the generation
    
    Returns:
    
    The generated UUID.