ObjectDB Database Search

Hi, in the following code you can see an example with EntityManager .refresh(). The example ... -------------------- package example; import java.io.File; import javax.persistence. EntityManager ; import ... ;  public void refreshTest() {         EntityManager

EntityManager with the same unitName. TradesC method needs an User, which is taken from UserDataB ... .pingushare.entity.p1.User#2' belongs to another EntityManager at com.objectdb.o.MSG.d(MSG.java:61 ... this should be a problem if, in the same transaction, an entity is passed into more EntityManagers , but here are 2

an internal pool of connections, and when an EntityManager is closed the underlying socket to the server is returned to the pool and can be reused with another new  EntityManager , as ... ; EntityManager holds is not preserved or reused. Is may be worth reusing these caches as well in some

wherein the EntityManagerFactory objects are being locked during EntityManager object creation.  Please refer ... with ObjectDB wherein the EntityManagerFactory objects are being locked during EntityManager object creation.  This is the normal behavior of ObjectDB. Creation operations of  EntityManager

' belongs to another EntityManager (error 613) 10:29:14,887 ERROR [stderr] (http--10.23.3.98-8081-5 ... to another EntityManager 10:29:15,072 ERROR [stderr] (http--10.23.3.98-8081-5) at com.objectdb.o ... 'pbdmodel.impl.OrgJedinicaImpl#8' belongs to another EntityManager 10:29:15,089 ERROR [stderr] (http--10.23

Hi, I have an issue with the EntityManager . My persistance XML looks like: com.objectdb.jpa.Provider Now in our project we use spring to start everything. If I do: System.out.println(" EntityManager ... , I get: com.objectdb.jdo.PMImpl Whats going on here? Is the entityManager not controlled by

. com.objectdb.o.UserException - Attempt to execute a query using a closed EntityManager at com ... to execute a query using a closed EntityManager at org.apache.myfaces.view.facelets.el ... .o._PersistenceException: Attempt to execute a query using a closed EntityManager at org.apache.el

. EntityManager ; import javax.persistence.TypedQuery; /** * @author Stanislav Jakuschev 28.02.2023 * * EntityManager .find(entityClass, primaryKey) is slow when accessing * non-existent IDs. * * Select queries ... "XId [a=" + a + ", b=" + b + ", c=" + c + "]"; } } public static void clear( EntityManager em) { Instant

Our application manages the Entities itself, so we close the EntityManager after every creating ... and finalize, we found the problem is caused by bad state of EntityManager . After first throwing the InternalException, the EntityManager throws every time when doing merge operation, but it can be closed

an EntityManagerFactory and later  EntityManager on this file, every thing is working fine ... EntityManager . Do you have any idea why does it crash? Thanks, Marcin  marcins Marcin ObjectDB uses ... .  But still the code crashes while creating  EntityManager on this odb file. And the program

Hi I understand we should close the entitymanager after each use, and close the factory ... server mode.  I am just running some test cases and opened up 100 entitymanager via factory ... , at least for a while). The issue with not closing EntityManager and  EntityManagerFactory instances

from Metamodel of a differente EntityManager initialized on a @Controller @RequestMapping event. I ... is it: If I have two moments of initialization of "javax.persistence.metamodel" from EntityManager and these two metamodels come from different EntityManagers . One of these is on a @PostConstruct event

with orphanRemoval set to true. I use a new EntityManager for each transaction (which normally happens in ... entity, the database contains 3 child entities. If I use the same EntityManager for both transactions ... ;      EntityManager em = emf.createEntityManager();     

I am trying to track down some obscure errors with multi-threading.  This involved looking at the EntityManager Metamodel but this caused an ObjectDB exception.  So I reverted ... ;password=admin;drop" EntityManager em = emf.createEntityManager(); em.getTransaction().begin(); MyEntity

In our production environment, entity manager creation, the line below, sometimes take upto few ten's of seconds to create. Is there any reason that is known which may be causing this ? Any suggestions on how this can be addressed ?   EntityManager entityManager = factory.createEntityManager

.PersistenceException: No Persistence provider for EntityManager I'm using the latest ObjectDB 2.6.2.b03 ... only this way (i.e. between building an EntityManagerFactory to building an EntityManager

EntityManager .refresh takes a long time for entity object Person in this code:     logger.log(Level.INFO, "begin select for person " + new Date().toString());     ... level;   Does i understand this term correctly, if try to refresh Entitymanager updates

); //OUTPUT: EMF: org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl@ffa7e1 EntityManager emTemp ... ");         javax.persistence. EntityManager em = emf

.persistence.PersistenceException: No Persistence provider for EntityManager named objectdb

Just started using objectdb (2.3.4). Calling EntityManager .merge for a new (non-managed) object gives EntityNotFoundException. I am perplexed by this. See attached test case. Thanks for your assistance. Full error output is: Exception in thread "main" [ObjectDB 2.3.4] javax.persistence

.Symbol#7' belongs to another EntityManager [Symbol:7] When I change the order in which the test runs (by

I'm trying to use two EntityManager with Spring Boot, but no luck with 'Too many persistable types (10) - exceeds evaluation limit' at second database. My purpose is converting database (converting model entity. same class name but different package). Single application with Spring-Boot 2.1.8

provider for EntityManager named $objectdb/myDB.odb at javax.persistence.Persistence

Creation of several EntityManager is slower

Accessing objects to make them available after EntityManager close?!

the EntityManagerFactory 's getCriteriaBuilder method or by the  EntityManager 's getCriteriaBuilder method

by the persistence provider when an entity reference obtained by EntityManager .getReference is accessed but the entity does not exist. Thrown when EntityManager .refresh is called and the object no longer exists in the database. Thrown when EntityManager .lock is used with pessimistic locking is used

(); } Similarly, if injection of an EntityManager is required, a CDI Producer method/ Disposer method pair may be used to make the EntityManager available as a CDI managed bean. @Produces @TransactionScoped @Documents EntityManager create(@Documents EntityManagerFactory factory) { return factory

. See Also: AttributeNode Subgraph NamedEntityGraph EntityManager ::createEntityGraph(Class) EntityManager ::createEntityGraph(String) EntityManager ::getEntityGraph(String) EntityManagerFactory::addNamedEntityGraph(String, EntityGraph) EntityManager ::find(EntityGraph, Object, FindOption...) Since: Jakarta

. Query names are scoped to the persistence unit. A named query may be executed by calling EntityManager ... this: @PersistenceContext EntityManager em; ... List customers = em.createNamedQuery("findAllCustomersWithName ... used to identify the query in calls to EntityManager .createNamedQuery . Since: Jakarta Persistence

, will be marked for rollback. See Also: EntityManager ::find(Class, Object, LockModeType) EntityManager ::find(Class, Object, LockModeType, java.util.Map) EntityManager ::lock(Object, LockModeType) EntityManager ::lock(Object, LockModeType, java.util.Map) Since: Jakarta Persistence (JPA) 1.0 Public

. A reference to a named entity graph may be obtained by calling EntityManager .getEntityGraph , and may be passed to EntityManager .find . Since: Jakarta Persistence (JPA) 2.1 Annotation Elements String name (Optional) The name used to identify the entity graph in calls to EntityManager .getEntityGraph

Jakarta Persistence (JPA) Interface jakarta.persistence.FindOption An option influencing the behavior of EntityManager .find . Built-in options control locking , cache interaction , and timeouts ... Timeout EntityManager ::find(Class, Object, FindOption...) EntityManager ::find(EntityGraph, Object, FindOption...) Since: Jakarta Persistence (JPA) 3.2

, Comparable , Serializable Specifies how the EntityManager interacts with the second-level cache when data is read from the database via the EntityManager .find methods and execution of queries. USE indicates ... .retrieveMode . See Also: EntityManager ::setCacheRetrieveMode(CacheRetrieveMode) Query::setCacheRetrieveMode

may be executed by calling EntityManager .createNamedQuery . In simple cases, a resultClass specifies ... Annotation Elements String name The name used to identify the query in calls to EntityManager ... class may be overridden by explicitly passing a class object to EntityManager .createNamedQuery

of the persistence unit Returns: the factory that creates EntityManager s configured according ... EntityManager s configured according to the specified persistence unit. Since: Jakarta Persistence (JPA) 1.0 ... EntityManager s configured according to the specified persistence unit. Since: Jakarta Persistence (JPA) 3

  The following exception occures if we call entityManager .flush() where the corresponding JPA PersistenceContext has many entities and relations. What is the reason for the exception? entityManager .getTransaction().commit() instead of a entityManager .flush() works correctly. Unfortunately I

Hello, we have following situation: The EntityManagerFactory is always opened and won't be closed. Thread A with its own EntityManager persists entities and commits the entities successfully. Thread B runs afterwards also with its own EntityManager and tries to load the persisted entities by

(    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

InternalException during EntityManager.find()

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

, Constable , Comparable , Serializable Specifies how the EntityManager interacts with the second-level cache ... .storeMode . See Also: EntityManager ::setCacheStoreMode(CacheStoreMode) Query::setCacheStoreMode

Jakarta Persistence (JPA) Interface jakarta.persistence.RefreshOption An option influencing the behavior of EntityManager .refresh . Built-in options control locking , cache interaction ... EntityManager ::refresh(Object, RefreshOption...) Since: Jakarta Persistence (JPA) 3.2