194 | UPDATE SET Queries in JPA/JPQLExisting 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 |
181 | Updating JPA Entity Objects 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 |
166 | Schema Update 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 <schema> element demonstrates the supported schema update |
117 | Update more than 10000 entities by an update query failsHello, following example tries to update more than 10000 entities by an update query. But only the first 10000 elements are updated. What's wrong? public class updateMoreThan10000Elements ... .setFlushMode(FlushModeType.AUTO); { String query = "UPDATE " + MyModelElement.class |
49 | MapKeyColumn.updatableAnnotation 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 |
49 | Column.updatableAnnotation 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 |
49 | OrderColumn.updatableAnnotation 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 |
49 | JoinColumn.updatableAnnotation 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 |
49 | MapKeyJoinColumn.updatableAnnotation 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 |
21 | Locking in JPA update collisions resulting from simultaneous updates to the same data by two concurrent users. Locking ... that has to be updated or deleted is checked. An exception is thrown if it is found out that an update is being performed on an old version of a database object, for which another update has already been committed |
