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Manual
14

Deleting JPA Entity Objects

); em.getTransaction().begin(); em.remove(employee); em.getTransaction().commit(); The entity object is physically deleted from the database when the transaction is committed. Embedded ... back and not committed the object is not deleted. An IllegalArgumentException is thrown by remove
Manual
14

JPA Lifecycle Events

(added to the EntityManager). @PostPersist - after storing a new entity in the database (during commit or ... the database (during commit or flush). @PreRemove - when an entity is marked for removal in the EntityManager. @PostRemove - after deleting an entity from the database (during commit or flush). An entity
Manual
14

Working with JPA Entity Objects

via an EntityManager’s persist method, which must be invoked within an active transaction. On transaction commit ... commit.  See the Updating Entities section for more information about making changes to entities ... Managed to Removed, and is physically deleted from the database during commit. More details on object
Manual
12

Database Management Settings

of the database file with $ added at the end. Every transaction commit is first written to the recovery ... (whose value is "true" or "false") specifies if physical writing is required before commit returns
Manual
12

DELETE Queries in JPA/JPQL

. Applying changes to the database by calling the commit method. JPQL DELETE queries provide ... (which use other EntityManager instances) only after commit. Delete All Queries The simplest form
Manual
12

Shared (L2) Entity Cache

the database and added to the shared cache. On commit - new and modified entity objects are added ... should be added to the cache on commit and on retrieval. The property has three valid values
Manual
12

UPDATE SET Queries in JPA/JPQL

. Applying changes to the database by calling the commit method. JPQL UPDATE queries provide ... (which use other EntityManager instances) only after commit. Update All Queries The simpler form
Manual
12

Obtaining a JPA Database Connection

is committed: em.getTransaction().commit(); The next section explains in more detail how to use the EntityManager and transactions for CRUD database operations.
JDO Doc
10

javax.jdo.Transaction

void commit() Commit the current transaction. Commit the current transaction. Throws ... until commit time. Optimistic transactions do not hold data store locks until commit time. Returns: the value ... of the restoreValues property Since: JDO 1.0 boolean getRetainValues() If true, at commit time instances retain
JDO Doc
8

javax.jdo.PersistenceManager

. The data store object will be removed at commit. Unlike makePersistent, which makes the closure ... makeNontransactional(Object pc) Make an instance non-transactional after commit. Make an instance non-transactional after commit. Normally, at transaction completion, instances are evicted from the cache