ObjectDB Database Search

We have a big entity object tree in our project. If I use the entityManager .remove(childEntity) method to remove a child entity a entityManager .refresh(parentEntity) is necessary in order to have an updated parent/child object tree in memory. But entityManager .refresh is too slow for our project

.persistence.Entity; import javax.persistence. EntityManager ; import javax.persistence.EntityManagerFactory ... void setId(long id) {    this.id = id;   } } private EntityManager ... ; EntityManager entityManager = emf.createEntityManager();   entityManager .setFlushMode(FlushModeType.AUTO

= Persistence.createEntityManagerFactory("$objectdb/db/payrollDB.odb"); public static EntityManager employeeDB = emf.createEntityManager(); public static EntityManager paygradeDB = emf ... was accurate. To me, this indicated that the two separate EntityManagers were not communicating

(    Consumer work ) Create a new application-managed EntityManager with an active transaction, and execute the given function, passing the EntityManager to the function. If the transaction ... with the caller, then the EntityManager is associated with this current transaction. If the given function

(    Function work ) Create a new application-managed EntityManager with an active transaction, and call the given function, passing the EntityManager to the function. If the transaction type ... , then the EntityManager is associated with this current transaction. If the given function returns

_ EntityManager = m_EntityMgrFactory.createEntityManager(); m_ EntityManager .setFlushMode( FlushModeType.COMMIT ); if ( m_ EntityManager .isOpen() ) { m_ EntityManager .getTransaction().begin(); for ( Pa3DataKey dataKey : aDataKeys ) { m_ EntityManager .persist( dataKey ); } m_ EntityManager .getTransaction().commit

Jakarta Persistence (JPA) Method in jakarta.persistence.EntityManagerFactory EntityManager createEntityManager() Create a new application-managed EntityManager . This method returns a new EntityManager instance each time it is invoked. The EntityManager .isOpen method will return true

Jakarta Persistence (JPA) Method in jakarta.persistence.EntityManagerFactory EntityManager createEntityManager (    Map map ) Create a new application-managed EntityManager with the given Map specifying property settings. This method returns a new EntityManager instance each time

Jakarta Persistence (JPA) Method in jakarta.persistence.EntityManagerFactory EntityManager ... -managed EntityManager with the specified synchronization type. This method returns a new EntityManager instance each time it is invoked. The EntityManager .isOpen method will return true on the returned

Jakarta Persistence (JPA) Method in jakarta.persistence.EntityManagerFactory EntityManager ... a new JTA application-managed EntityManager with the specified synchronization type and map of properties. This method returns a new EntityManager instance each time it is invoked. The EntityManager

Enumerates flush modes recognized by the EntityManager . When queries are executed ... transaction, the persistence provider must not flush to the database. See Also: EntityManager

Jakarta Persistence (JPA) Interface jakarta.persistence.LockOption An option influencing the behavior of EntityManager .lock . Built-in options control scope , and timeouts . This interface ... . See Also: LockModeType PessimisticLockScope Timeout EntityManager .lock(Object, LockModeType, LockOption...) Since: Jakarta Persistence (JPA) 3.2

the persistence provider when EntityManager .persist is called and the entity already exists ... . See Also: EntityManager .persist(Object) Since: Jakarta Persistence (JPA) 1.0 Public Constructors

with the EntityManager's life cycle but cannot figure out what. I am using Guice injection and Guice persist and should get one EntityManager per request. Also, please note that in the web app I actually ... ;  } } public void test() {     // em is the EntityManager     em

the EntityManager .createNamedQuery or EntityManager .createNamedStoredProcedureQuery methods. Any configuration

(all of them)? Does it happen when the EntityManager is open or closed? Note that if you are working with detached objects (e.g. after closing the EntityManager ) then anything that has not ... yet resolved before the elements are returned and the EntityManager is closed? Kevin Kevin Pfaff So you say

(db_name) 3. After runnings some automatic tests for ca. 1 h all EntityManagers are closed ... the Database but more the 236 Copies of those entitities in the memory (after closing all EntityManagers ... an EntityManager  in the connection pool of a live E ntityManagerFactory , where that EntityManager

entityManagerFactory;         private EntityManager entityManager ... ;  entityManager = entityManagerFactory.createEntityManager();        ... ;    entityManager .getTransaction().begin();        

.CascadeType; import javax.persistence.Entity; import javax.persistence. EntityManager ; import javax ... t = new Test(); t.test(); } public static class Test{ EntityManagerFactory emf; EntityManager em ... javax.persistence. EntityManager ; import javax.persistence.EntityManagerFactory; import javax

Jakarta Persistence. An EntityManager may be a JTA entity manager, where transaction management

as an argument to: one of the methods of EntityManager which obtains locks ( lock() , find() , or

EntityManager .runWithConnection(ConnectionConsumer) Since: Jakarta Persistence (JPA) 3.2 Public Instance

EntityManager .callWithConnection(ConnectionFunction) Since: Jakarta Persistence (JPA) 3.2 Public

Jakarta Persistence (JPA) Interface jakarta.persistence.EntityTransaction Interface used to control transactions on resource-local entity managers. The EntityManager .getTransaction method returns the EntityTransaction interface. Since: Jakarta Persistence (JPA) 1.0 The Database Connection using

Jakarta Persistence (JPA) Interface jakarta.persistence.TypedQueryReference Type Parameters: - an upper bound on the result type of the query A reference to a named query declared via the NamedQuery or NamedNativeQuery annotations. See Also: EntityManager .createQuery(TypedQueryReference

Hello, I have a problem with the EntityManager .merge() function. I set a property value ... ErgoDaoJpa implements IErgoDao { @PersistenceContext private EntityManager entityManager ; public void ... ; throws EntryAlreadyExistException, DaoException { entityManager .persist(ergoClass); } public void

; static EntityManager departmentDB = emf.createEntityManager(); public  static EntityManager employeeDB = emf.createEntityManager(); public  static EntityManager paygradeDB = emf.createEntityManager(); public  static EntityManager programDB = emf.createEntityManager(); public  static

EntityManager ) by two concurrent threads. ObjectDB synchronizes use of EntityManager by different threads ... implementation. Maybe a socket from a closed EntityManager is still used after the EntityManager is closed after its resources are allocated and used by a new EntityManager . You may try the following

.persistence. EntityManager ; import javax.persistence.EntityManagerFactory; import javax.persistence ... entityManagerFactory; private EntityManager entityManager ; protected Map sharedState = new HashMap (); private ... = Persistence.createEntityManagerFactory((String) options.get("url")); entityManager

.persistence.Basic; import javax.persistence.Entity; import javax.persistence. EntityManager ; import javax ... static Container getInstance( EntityManager em) { Container c = em.find(Container.class, "1"); if (c ... (Integer numberToGen, EntityManager em) throws TestException { if (lastInstanceInMap == null

database. I can't find the nice way to use EntityManager in EntityListener. Because of that, I can't ... to obtain an EntityManager from a listener class? You may use the JDO getPersistenceManager method and cast the result to an  EntityManager . support Support I know about this feature request

class Singleton implements Serializable { public static Singleton getInstance( EntityManager em ... int version; @Basic protected java.lang.Integer lastInstance; public void generateItems( EntityManager ... (this, startCnt); em.persist(item); lastInstance = startCnt; } } public Item findItem( EntityManager em, int

: @PersistenceContext private EntityManager em; // Stores a new guest: @Transactional public Language persist ... _ ENTITYMANAGER _PACKAGES_TO_SCAN)); entityManagerFactoryBean.setJpaVendorAdapter(new ... entityManagerFactory; // Stores a new guest: public Object persist(Object guest) { EntityManager em

? When should I use the close method of EntityManagerFactory and  EntityManager ? As long as ... the close method of EntityManagerFactory and  EntityManager ? You can close the  EntityManagerFactory when the web application is closed (see this example ). Usually  EntityManager

PersistenceManager from your EntityManager :     em.unwrap(PersistenceManager.class ... on my EntityManager ?? also, I don't have a query (String, Class) method on my EntityManager dmoshal ... as the 2nd argument. oddly, I don't have an unwrap() method on my EntityManager ?? also, I don't

removeConclusions(Long id) { entityManager = dbConn.getConnection(); Conclusion conclusion = entityManager .find(Conclusion.class, id); entityManager .getTransaction().begin(); entityManager .remove(conclusion); entityManager .getTransaction().commit(); } but iam getting constraint violation error . 

("Москва"); person.setCity(city); entityManager .persist(city); entityManager .persist(person ... .setName(name); entityManager .persist(person); City city = new City(); city.setName("Москва"); person.setCity(city); entityManager .persist(city); entityManager .persist(person);   but JBoss throw

;  Persistence.createEntityManagerFactory("ODB.odb"); EntityManager em = emf ... ); } } nullcrud N J It seems to work as expected. The entity object is cached in the EntityManager  as ... one EntityManager instance are invisible in other  EntityManager instances until commit, but visible in

when the fetch start? Martin   mt Martin Every EntityManager manages its own memory objects (which represent database objects). Therefore, if an entity object is retrieved by one EntityManager and then updated in the database by another EntityManager , the first  EntityManager may still have an old

to the current transaction by means of the EntityManager .joinTransaction method. Default

manager factory has been closed. See Also: EntityManager .getCriteriaBuilder() Since: Jakarta Persistence (JPA) 2.0

with a result and after that a ToleranceDefinition entity is removed from database by entitymanager ... / UPDATE database queries with EntityManager 's operations is known as problematic. It is not specific to ObjectDB but general to JPA. DELETE / UPDATE JPA queries bypass the  EntityManager

. EntityManager ; import javax.persistence.EntityManagerFactory; import javax.persistence.FetchType; import ... ; EntityManager entityManager = emf.createEntityManager();   ParentEntity parentEntity = new ParentEntity();   entityManager .getTransaction().begin();   entityManager .persist(parentEntity

.persistence. EntityManager ; import javax.persistence.EntityManagerFactory; import javax.persistence ... () { emf = Persistence.createEntityManagerFactory("ReproducePU"); }   public EntityManager ... findMomentEntity(Long id) { EntityManager em = getEntityManager(); try { return em.find(MomentEntity.class, id

; @PersistenceContext     private EntityManager em;     public List findElements ... with ObjectDB behavior in this case. Your TestQuery class uses a transaction scope EntityManager ... to extended scope EntityManager By doing that you prevent detachment on exit from findElements

; } } /** Workflow **/ Account account = new Account(); entityManager .persist(account); entityManager .flush(); Project project = new Project(); project.setAccount(account); entityManager .persist(project); entityManager .flush(); account = entityManager .find(account); assertNonNull(account.getProjects

When using JQL-Update Queries it is basically not working without calling entityManager .clear() after a transaction commit. When the clear() method isn't called the entityManager will never return ... cautiously because bypassing the EntityManager may break its synchronization with the database. For example

entityManager per thread and have a central point where we encapsulated all the needed entitymanager ... Object(); public static void begin( EntityManager threadEntityManager){ synchronized(lockBegin){ try ... is detached (e.g. when the EntityManager is closed), ObjectDB replaces lazy loaded collections

object after the transaction is committed (or after the update and before commit, if your EntityManager ... the second query. Do I need to call refresh() on the object, query, or EntityManager ? ps: setting FlushModeType.AUTO in the EntityManager resulted in a huge exception message. dmoshal David Moshal Hmm, I

I am encountering problems (complexities) with EntityManager registration of entities ... system: hibernate.archive.autodetection https://docs.jboss.org/hibernate/ entitymanager /3.6/reference/en ... to the EntityManager whether one performs compile-time enhancement or runtime enhancement ? That is, does