WebUses of EntityManagerFactory in javax.persistence. Persistence. createEntityManagerFactory (java.lang.String persistenceUnitName) Create and return an EntityManagerFactory for the named persistence unit. Persistence. createEntityManagerFactory (java.lang.String persistenceUnitName, java.util.Map … Here the list of important methods EntityManagerFactory interface for your reference: 1. void addNamedEntityGraph(String graphName, EntityGraph entityGraph) — This method add a named copy of the EntityGraph to the EntityManagerFactory. 2. void addNamedQuery(String name, Query query) — This method is … See more Let's demonstrates the important methods of the EntityManagerFactory Interfacewith an example. In this example, we will use the createEntityManager()method … See more
JPA EntityManagerFactory Interface With Example - DZone
WebSpecify an asynchronous executor for background bootstrapping, e.g. a SimpleAsyncTaskExecutor.. EntityManagerFactory initialization will then switch into background bootstrap mode, with a EntityManagerFactory proxy immediately returned for injection purposes instead of waiting for the JPA provider's bootstrapping to complete. … WebMay 17, 2011 · Your code is not "solid": constructor must be private for a singleton; you shouldn't have the getInstance() method synchronised, although you need to perform the initialisation thread-safe. That's because after initialization, all the threads that need the instance will have to wait for each other (and that's a useless bottleneck). books about dream meanings
JPA - Persistence与EntityManagerFactory简解_jpa …
http://www.java2s.com/Code/Java/JPA/CreateEntityManagerFactory.htm WebThe values of these properties override * any values that may have been configured elsewhere. * @return the factory that creates EntityManagers configured according to * the specified persistence unit. */ public static EntityManagerFactory createEntityManagerFactory(String persistenceUnitName, Map properties) { … WebMay 16, 2011 · import javax.persistence.EntityManagerFactory; import javax.persistence.Persistence; public class EntityManagerFactorySingleton { private … books about dragons fiction