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.

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