14 | Schema-Update: Rename superclass and remove one subclassSchema-Update: Rename superclass and remove one subclass |
14 | Privacy PolicyLast updated: 13 January 2023 This Privacy Policy describes Our policies and procedures ... communication, such as a mobile application's push notifications regarding updates or informative ... updates, when necessary or reasonable for their implementation. To provide You with news, special |
14 | Storing JPA Entity Objects too much memory. The sample code above clears the persistence context after every 10,000 persists. Updates are flushed to the database before clearing, otherwise they would be lost. Updates that are sent ... until a commit. With no explicit commit, these updates are later discarded. The combination of clear |
11 | SELECT clause (JPQL / Criteria API) objects, transparent update detection, support for delete, etc. Query results are not limited to entity ... efficiently. They are less productive with operations that update or delete entity objects, in ... and transparent update detection), but they are more lightweight, they are built faster |
11 | Shared (L2) Entity Cache, which are defined as constants of the CacheStoreMode enum: CacheStoreMode.BYPASS - cache is not updated ... that is already cached is updated using the freshly retrieved data only when CacheStoreMode.REFRESH is used. This might be useful when the database might be updated by other applications (or using |
11 | Database Replication and Clustering, which are limited to READ operations. Any update to the master database is automatically propagated ... to connect to the master server in order to listen to updates. The updates are automatically |
11 | JPA Query Structure (JPQL / Criteria) (update and delete queries have a slightly different form). The other JPQL clauses, WHERE, GROUP BY, HAVING and ORDER BY are optional. The structure of JPQL DELETE and UPDATE queries is simpler: DELETE FROM ... [WHERE ...] UPDATE ... SET ... [WHERE ...] Besides a few exceptions, JPQL is case |
11 | Working with JPA Entity Objects requires using entity objects for many operations, including storing, retrieving, updating and deleting ... is detected by the owning EntityManager and the update is propagated to the database on transaction commit. See the Updating Entities section for more information about making changes to entities |
1 | [ODB1] Chapter 6 - Persistent Objects to it but its content is only updated if it has changed since the last store. An object name must be unique in ... . When the transaction is committed, the content of that object in the database is physically updated: pm ... is taken by ObjectDB to update the object lock (for example from READ to WRITE). Locks are released |
1 | [ODB1] Chapter 5 - JDO Connections storing, retrieving, updating and deleting database objects, are provided in the next chapter (Chapter ... transactions on a database. In JDO, operations that affect the content of the database (store, update ... are not locked. Therefore, two transactions may update the same persistent object at the same time |
