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JPA Doc
6

javax.persistence.criteria.SetJoin

>, From, Join, Path, PluralJoin,E>, Selection, TupleElement The SetJoin ... attribute. Note: Applications using the string-based API may need to specify the type resulting from ... q = cb.createQuery(Person.class); Root p = q.from(Person.class); q.select(p
JDO Doc
6

javax.jdo.datastore.DataStoreCache

void evict(Object oid) Evict the parameter instance from the second-level cache. Evict the parameter instance from the second-level cache. Parameters: oid - the object id of the instance to evict. Since: JDO 2.0 void evictAll() Evict the parameter instances from the second-level cache. Evict
JDO Doc
6

javax.jdo.datastore.DataStoreCache.EmptyDataStoreCache

. Since: JDO 2.0 void evict(Object oid) Evict the parameter instance from the second-level cache. Evict the parameter instance from the second-level cache. Parameters: oid - the object id of the instance ... - Since: JDO 2.0 void evictAll() Evict the parameter instances from the second-level cache. Evict
Result
6

Consulting and Training

and will lead you to the best solution from design to implementation. For further information ... depth from the very basics up to advanced topics, performance tuning and production tools. This course
Manual
6

Database Connection using JPA

instance obtained from the EntityManager. An EntityManager instance also functions as a factory ... { em.close(); } The EntityManager instance is obtained from the owning EntityManagerFactory
Manual
6

Database Transaction Replayer

is useful for two different purposes: It enables recovery from a database failure by replaying ... the objectdb.jar file. It can be run from the command line: > java -cp objectdb.jar com.objectdb
Manual
6

Defining a JPA Entity Class

objects from the database: package com.objectdb.tutorial; @Entity public class Point ... . This is a very powerful feature of ObjectDB that is absent from other object oriented databases.
JPA Doc
6

JPA Queries

. "SELECT c FROM Country"). Criteria Query API Building dynamic queries whose structure is only known ... . SELECT and ORDER BY elements (including tuples): FROM clause elements (representing range
Manual
6

JPA Query API

for both Query and TypedQuery: Query q1 = em.createQuery("SELECT c FROM Country c"); TypedQuery q2 = em.createQuery("SELECT c FROM Country c", Country.class); In the above code
Manual
6

Locking in JPA

JPA 2 supports both optimistic locking and pessimistic locking. Locking is essential to avoid update collisions resulting from simultaneous updates to the same data by two concurrent users. Locking ... entity objects when they are retrieved from the database. In addition to improving efficiency