其中定义了 IdentifierGenerator 的简写

• uuid2 - UUIDGenerator
• guid - GUIDGenerator
• assigned - Assigned
• identity - IdentityGenerator
• select - SelectGenerator
• sequence - SequenceStyleGenerator
• increment - IncrementGenerator
• foreign - ForeignGenerator
• enhanced-sequence - SequenceStyleGenerator
• enhanced-table - TableGenerator

以下 deprecated

• uuid - UUIDHexGenerator
• uuid.hex - UUIDHexGenerator
• seqhilo - SequenceHiLoGenerator
• sequence-identity - SequenceIdentityGenerator