About Persistence Context

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Manual
12

Database Schema Evolution

Modifications to entity classes that do not change their persistent field definitions (their schema ... and non persistent fields. However, additions, deletions and modifications to the persistent fields ... to any numeric type. In this context numeric types are: byte, short, char, int, long, float, double
JPA Doc
11

Persistence()

Constructor javax.persistence.Persistence Persistence() Since: JPA 1.0
JPA Doc
11

Persistence.PERSISTENCE_PROVIDER

Static Field javax.persistence.Persistence String PERSISTENCE_PROVIDER Deprecated. This final String is deprecated and should be removed and is only here for TCK backward compatibility Since: JPA 1.0
Manual
10

DELETE Queries in JPA/JPQL

. For example, the EntityManager may not be aware that a cached entity object in its persistence context has been removed from the database by a DELETE query. Therefore, it is a good practice to use
Manual
10

UPDATE SET Queries in JPA/JPQL

its persistence context has been modified by an UPDATE query. Therefore, it is a good practice to use
Manual
10

UPDATE SET Queries in JPA/JPQL [2011-11-22]

its persistence context has been modified by an UPDATE query. Therefore, it is a good practice to use
JPA Doc
10

javax.persistence.spi.PersistenceUnitInfo

javax.persistence.spi Interface PersistenceUnitInfo Interface implemented by the container and used by the persistence provider when creating an javax.persistence.EntityManagerFactory. Since: JPA 1.0 ... are only transformed once within the same classloading scope, regardless of how many persistence units
Manual
10

Chapter 2 - JPA Entity Classes

Explains how to define and use JPA entity classes and other JPA persistable types.
JDO Doc
9

javax.jdo.PersistenceManager

is specified as null, events for all persistent classes and interfaces will be sent to listenerInstance ... 1.0 void deletePersistent(Object pc) Delete the persistent instance from the data store. Delete the persistent instance from the data store. This method must be called in an active transaction
JPA Doc
9

javax.persistence.spi.PersistenceProvider

javax.persistence.spi Interface PersistenceProvider Interface implemented by the persistence provider. It is invoked by the container in Java EE environments and by the javax.persistence.Persistence class in Java SE environments to create an javax.persistence.EntityManagerFactory. Since: JPA 1.0