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)