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javax.persistence.EntityManager

context and the lock mode type is pessimistic and the entity has a version attribute, the persistence provider must perform optimistic version checks when obtaining the database lock. If these checks fail ... > - if the optimistic version check fails

JPA Lifecycle Events

/persistence/orm http://java.sun.com/xml/ns/persistence/orm_1_0.xsd" version="1.0"> <

Storing JPA Entity Objects

://java.sun.com/xml/ns/persistence/orm_1_0.xsd" version="1.0"> <persistence-unit-metadata

JPA Persistable Types

Java serialization format will be inaccessible to future versions of ObjectDB on other platforms (e.g

JPA Annotations for Fields

The way a field of a persistable class is managed by JPA can be set by the following annotations: Version|Transient"> Additional

Is ObjectDB better than competing object databases?

and advanced version of the Java Data Objects (JDO) API than competing object databases.

Logical Operators in JPQL and Criteria API

_Expression_">isTrue method. This is required because in the non binary version the factory

Index Definition

can only be defined on ordinary persistent fields (not on primary key / version fields).

Spring MVC and JPA Tutorial

the following versions:

javax.jdo.JDOEntityManager

context and the lock mode type is pessimistic and the entity has a version attribute, the persistence provider must perform optimistic version checks when obtaining the database lock. If these checks ... ">OptimisticLockException - if the optimistic version check fails