65 | Object Relations Error after Schema ChangeObject Relations Error after Schema Change |
65 | internal object DB locking in an embedded multi threaded applicationinternal object DB locking in an embedded multi threaded application |
65 | Error when using Object DB Java AgentError when using Object DB Java Agent |
65 | enhanced object .. NOT enhancedenhanced object .. NOT enhanced |
12 | Running JPA Queries when exactly one result object is expected. Query.getResultList - for general use in any other case ... - for use when exactly one result object is expected. TypedQuery.getResultList - for general use in any ... (with getResultList) The following query retrieves all the Country objects in the database. The query |
12 | Paths and Types in JPQL and Criteria API as arguments. Path expressions that navigate from one object to another. Instances of user defined ... ) and uses the dot (.) operator to navigate through persistent fields to other objects and values. For example - c.capital, where c represents a Country entity object uses the capital persistent field |
11 | JPA Entity Fields otherwise (e.g. by using the @Transient annotation). Storing an entity object in the database does not store methods or code. Only the persistent state of the entity object, as reflected by its persistent ... . When an entity object is stored in the database every persistent field must contain either null or a value |
11 | DELETE Queries in JPA/JPQLAs explained in chapter 2, entity objects can be deleted from the database by: Retrieving the entity objects into an EntityManager. Removing these objects from the EntityManager within an active ... an alternative way for deleting entity objects. Unlike SELECT queries, which are used to retrieve data from |
1 | [ODB1] Chapter 2 - A Quick Tour instances. ObjectDB, as a pure object database, can simply store a memory data structure in the database ... method (line 25). An object bound to the database during an active transaction, is expected to be stored physically in the database when the transaction is committed (line 37). Note: Memory objects |
1 | javax.jdo.PersistenceManager. This exception contains a nested JDOOptimisticVerificationException for each object that failed ... .0 void deletePersistent(Object pc) Delete the persistent instance from the data store. Delete ... . The data store object will be removed at commit. Unlike makePersistent, which makes the closure |
