| Class Summary | 
| AbstractSequentialIdGenerator | Base class for IdGeneratorservices that generate
 sequential ids. | 
| FileIdGenerator | PersistentIdGenerator that stores IdSpacesin a flat
 file as a serializedMap. | 
| IdSpace | IdSpace defines the scope of a set of ids and how they are
 generated. | 
| ObfuscatedSQLIdGenerator | Persistent, obfuscated id generator that keeps track of ids given out
 using an SQL DB table. | 
| PersistentIdGenerator | An IdGeneratorthat gives out ids suitable for use
 with persistent objects. | 
| SQLIdGenerator | Persistent, sequential id generator that keeps track of ids given out
 using an SQL DB table. | 
| TransientIdGenerator | Service that generates sequential ids as either Strings or
 longs. | 
| Util | Utility classes related to id generation. |