JPA2.0 & JPA2.1

JPA 2.0

• Expanded object-relational mapping functionality
• support for collections of embedded objects, linked in the ORM with a many-to-one relationship
• ordered lists
• combinations of access types
• A criteria query API
• standardization of query 'hints'
• standardization of additional metadata to support DDL generation
• support for validation
• Shared object cache support.

JPA 2.1

• Converters - allowing custom code conversions between database and object types.
• Criteria Update/Delete - allows bulk updates and deletes through the Criteria API.
• Stored Procedures - allows queries to be defined for database stored procedures.
• Schema Generation
• Entity Graphs - allow partial or specified fetching or merging of objects.
• JPQL/Criteria enhancements - arithmetic sub-queries, generic database functions, join ON clause, TREAT option.

출처 - https://en.wikipedia.org/wiki/Java_Persistence_API

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