 267 | Existing entity objects can be updated, as explained in chapter 2, by: Retrieving the entity objects into an EntityManager. Updating the relevant entity object fields within an active transaction. Applying changes to the database by calling the commit method. JPQL UPDATE queries provide |
267 | Existing entity objects can be updated, as explained in chapter 2, by: Retrieving the entity objects into an EntityManager. Updating the relevant entity object fields within an active transaction. Applying changes to the database by calling the commit method. JPQL UPDATE queries provide |
254 | persistence, which means that changes are detected and handled automatically. Transparent Update ... ();
The entity object is physically updated in the database when the transaction is committed. If the transaction is rolled back and not committed the update is discarded. On commit the persist operation |
239 | ObjectDB tries to apply the specified schema updates every time a database is opened. When using client ... side where the up to date classes are located. The following element demonstrates the supported schema update |
71 | Annotation Element javax.persistence.Column boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 1.0 |
71 | Annotation Element javax.persistence.JoinColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 1.0 |
71 | Annotation Element javax.persistence.MapKeyColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 2.0 |
71 | Annotation Element javax.persistence.MapKeyJoinColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 2.0 |
71 | Annotation Element javax.persistence.OrderColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 2.0 |
39 | Explains how to store, retrieve, update and delete entity objects using JPA. |