Java Persistence/What is new in JPA 2.1?
The JPA 2.1 specification adds several enhancements to the JPA 2.0 specification including:
- 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.
- ConstructorResult support for SQLResultSetMapping
- Runtime creation of named queries
- Injectable EntityListeners
- Unsynchronized persistence contexts
- DDL generation - automatic table, index and 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.