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.

Resources

• JPA 2.1 Spec
• JPA 2.1 Reference Implementation (EclipseLink)