ObjectDB Database Search

Jakarta Persistence (JPA) Interface jakarta.persistence. EntityManagerFactory Super Interfaces ... . An EntityManagerFactory with a lifecycle managed by the application may be created using the static operations ... , there is exactly one EntityManagerFactory for each persistence unit: // create a factory at initialization time

wherein the EntityManagerFactory objects are being locked during EntityManager object creation.  Please refer ... to understand any underlying EntityManagerFactory locking mechanism to get deeper insight into ... with ObjectDB wherein the EntityManagerFactory objects are being locked during EntityManager object

gupta Your question is unclear. You can close each EntityManagerFactory by using the close method. By the way, creating an  EntityManagerFactory is relatively slow. It is usually better to use one  EntityManagerFactory per application, with multiple  EntityManager instances for multiple database connections. support Support

: For an EntityManagerFactory , use the createEntityManagerFactory method: Map properties = new HashMap(); properties.put("jakarta.persistence.query.timeout", 4000); EntityManagerFactory emf = Persistence

. Retrieve it by result type from EntityManagerFactory .getNamedQueries , and use it to get a TypedQuery instance via EntityManager.createQuery .

must be obtained from an EntityManagerFactory , and is only able to manage persistence of entities belonging ... via a call to EntityManagerFactory .createEntityManager . The EntityManager must be explicitly closed ... , and is thus considered quite error-prone. It is much safer to use the methods EntityManagerFactory .runInTransaction

.createEntityGraph(String) EntityManager.getEntityGraph(String) EntityManagerFactory ... descriptor element, or added by means of the EntityManagerFactory .addNamedEntityGraph method

, IOException { // Obtain a database connection: EntityManagerFactory emf = ( EntityManagerFactory ... ); } } GuestServlet performs the following operations on every http request: The EntityManagerFactory

? 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

be able to inject EntityManagerFactory to my beans. Could you help me on this? vachagan Vachagan ... (" entityManagerFactory "); } @Bean public JpaTransactionManager transactionManager() throws ... .setEntityManagerFactory( entityManagerFactory ()); return transactionManager; } @Bean public

Jared Hinze This may happen if the EntityManagerFactory (or PersistenceManagerFactory if you use JDO ... this is the only EntityManagerFactory instance in your application verify that emf.close is indeed reached and executed (e.g ... simple as I can make it. public class Main extends Application { private static EntityManagerFactory

with the Persistence api: EntityManagerFactory emf = Persistence.createEntitManagerFactory("project.odb"); //this set ... ; This simple program: import javax.persistence.Entity; import javax.persistence. EntityManagerFactory ... (String[] args) {         EntityManagerFactory emf =   

(String name, String surname, ServletContext servletContext) { EntityManagerFactory emf = ( EntityManagerFactory ) servletContext.getAttribute("emf"); EntityManager em = emf.createEntityManager(); Person

the backup. support Support This is the code I used in my servlet : EntityManagerFactory emf = null;   ... - with the same result.   EntityManagerFactory emf = Persistence.createEntityManagerFactory

; import javax.persistence. EntityManagerFactory ; import javax.persistence.EntityTransaction; import javax ... ; */ public static void main(String[] args) {   EntityManagerFactory emf = Persistence

: Generate Database public static void main(String[] args) { EntityManagerFactory emf = Persistence ... EntityManagerFactory emf = Persistence.createEntityManagerFactory("objectdb:test.tmp"); EntityManager em = emf

(); Thread.currentThread().setContextClassLoader( EntityManagerFactory .class.getClassLoader()); then it works ... in order to support e.g. Declarative Services and possibly provide  EntityManagerFactory as

.Test public void test() throws IOException { EntityManagerFactory emf = Persistence ... document; } } @org.junit.Test public void test() throws IOException { EntityManagerFactory emf

; import javax.persistence.EntityManager; import javax.persistence. EntityManagerFactory ; import ... ; public static void main(String[] args) {   EntityManagerFactory emf = Persistence   

The code I have a RecordDao stateless java bean :  @Stateless public class RecordDao { private EntityManagerFactory emf; private EntityManager em; public RecordDao() { } @PostConstruct public ... the EntityManagerFactory and the EntityManager explicitly, but let the application server

) {         EntityManagerFactory EMF = Persistence ... ;       EntityManagerFactory EMF = Persistence.createEntityManagerFactory

THUFIR THUFIR Every EntityManagerFactory instance manages a pool of connections and reuses ... with EntityManagerFactory  (which manages the connection pool) and EntityManager (which represents

. EntityManagerFactory ; import javax.persistence.Persistence; /** * * @author Benjamin Klink, SOLVIT GmbH */ public ... static void main(String[] args) {         EntityManagerFactory emf

javax.persistence. EntityManagerFactory ; import javax.persistence.Persistence; import javax ... ;  odbFile.delete();         EntityManagerFactory emf

EntityManagerFactory " entityManagerFactory ", which is associated with the MySQL/Hibernate

;dbUrl += ";drop";          EntityManagerFactory emf = Persistence ... static void store( EntityManagerFactory emf) throws Exception {         

EntityManagerFactory createEntityManagerFactory(String paramString, Map paramMap) /* */ { /* 73 */ EntityManagerFactory localEntityManagerFactory = null; /* 74 */ PersistenceProviderResolver

# EntityManagerFactory support Support thanks, works for me. dmoshal David Moshal

Test { private final EntityManagerFactory emf; private final EntityManager em; public Test() { emf

; {         EntityManagerFactory emf =      

void main(String[] args) {         EntityManagerFactory emf = null

the EntityManagerFactory (or is it the EntityManager?) where to store the log-file

Hi I am trying to get a basic EclipseRCP project working with Objectdb. At the very first line in creating a View public void createPartControl(Composite parent) {      EntityManagerFactory emf =          Persistence

" ; EntityManagerFactory emf = Persistence . createEntityManagerFactory ( PATH ); EntityManager em = emf

static void main(String[] args) {         EntityManagerFactory

;  {         EntityManagerFactory emf =    

; EntityManagerFactory emf =             Persistence

;              EntityManagerFactory emf

(String[] args) throws Exception { EntityManagerFactory emf = Persistence.createEntityManagerFactory ... ;            entityManager = entityManagerFactory .createEntityManager ... .no-schema-upgrade", "true"); EntityManagerFactory emf = Persistence.createEntityManagerFactory("D:\\odb

.EntityManager; import javax.persistence. EntityManagerFactory ; import javax.persistence.FetchType; import ... ; EntityManagerFactory emf = Persistence.createEntityManagerFactory("objectdb:$objectdb/db/test.tmp;drop");   ... ; EntityManagerFactory emf =            

.persistence. EntityManagerFactory ; import javax.persistence.GeneratedValue; import javax.persistence.Id ... [] args) {         EntityManagerFactory emf = Persistence

; import javax.persistence.EntityManager; import javax.persistence. EntityManagerFactory ; import javax ... (String[] args) {   EntityManagerFactory emf = Persistence.createEntityManagerFactory

main(String[] args) {         EntityManagerFactory emf =   ... ;      EntityManagerFactory emf =        

.fastmodel.fastplan.db. EntityManagerFactory .doFilter( EntityManagerFactory .java:202) at org.apache

Added empty implementation of new JPA 2.1 methods. Implemented new JPA 2.1 EntityManagerFactory methods:  createEntityManager , unwrap . Improved retrieving persistent string fields by using "".intern() for empty strings. Fixed a bug in queries on composed embedded primary key ( issue #1301 ).

has been deliberately removed): EntityManagerFactory emf = Persistence.createEntityManagerFactory

;       EntityManagerFactory emf =       

Improved the error message on exception during commit, reported in issue #2882 . Improved automatic schema evolution of enum fields. Fixed A NullPointException when using EntityManagerFactory with different class loaders. Fixed a missing call to @PostUpdate when object change is detached by