![]() ![]() The person variable references the actual persisted object. ![]() It operates on the passed object “in place,” changing its state. Notice that the persist method has a void return type. The generation of INSERT statements will occur only upon committing the transaction, or flushing or closing the session. The object is in the persistence context now, but not yet saved to the database. What happens after we call the persist method? The person object has transitioned from a transient to persistent state. We usually call it when we want to add a record to the database (persist an entity instance): Person person = new Person() transitioning an instance from a transient to persistent state. ![]() The persist method is intended to add a new entity instance to the persistence context, i.e. The persistent instance is “online,” whereas the detached instance is “offline” and not monitored for changes. When the entity instance is in the persistent state, all the changes that we make to the mapped fields of this instance will be applied to the corresponding database records and fields upon flushing the Session. Here's a simplified state diagram with comments on Session methods that make the state transitions happen: An instance enters this state if we evict it from the context, clear or close the Session, or put the instance through serialization/deserialization process. ![]() detached - This instance was once attached to a Session (in a persistent state), but now it’s not.Upon flushing the Session to the database, this entity is guaranteed to have a corresponding consistent record in the database. persistent - This instance is associated with a unique Session object.This instance has no corresponding rows in the database it's usually just a new object that we created to save to the database. transient - This instance isn't, and never was, attached to a Session.15:18:25,845 ERROR (ServerService Thread Pool - 58) MSC000001: Failed to start service jboss.persistenceunit."peace-web.war#": .StartException in service jboss.persistenceunit."peace-web.war#": : Unable to build EntityManagerFactoryĪt .$1$1.run(PersistenceUnitServiceImpl.java:172) Īt .$1$1.run(PersistenceUnitServiceImpl.java:117) Īt (Native Method) Īt .WildFlySecurityManager.doChecked(WildFlySecurityManager.java:474)Īt .$1.run(PersistenceUnitServiceImpl.java:182) Īt .runWorker(ThreadPoolExecutor.java:1149) Īt $n(ThreadPoolExecutor.java:624) Īt (Thread.java:748) Īt .run(JBossThread.java:122)Ĭaused by: : Unable to build EntityManagerFactoryĪt 3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:915) Īt 3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:890) Īt .createContainerEntityManagerFactory(HibernatePersistence.java:74) Īt .(PersistenceUnitServiceImpl.java:318) Īt .$1100(PersistenceUnitServiceImpl.java:67) Īt .$1$1.run(PersistenceUnitServiceImpl.java:167) Ĭaused by: .ServiceException: Unable to create requested service Īt .AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:186) Īt .AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:150) Īt .AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131) Īt .(SessionFactoryImpl.java:264) Īt .buildSessionFactory(Configuration.java:1742) Īt .(EntityManagerFactoryImpl.java:94) Īt 3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:905) Ĭaused by: : Unable to start region factoryĪt .InfinispanRegionFactory.start(InfinispanRegionFactory.java:323) Īt .(CacheImpl.java:70) Īt .CacheInitiator.initiateService(CacheInitiator.java:40) Īt .CacheInitiator.initiateService(CacheInitiator.java:35) Īt .SessionFactoryServiceRegistryImpl.initiateService(SessionFactoryServiceRegistryImpl.java:91) Īt .AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:176) Ĭaused by: : .()Lorg/jboss/msc/service/ServiceContainer Īt .createCacheManager(InfinispanRegionFactory.java:80)Īt .InfinispanRegionFactory.start(InfinispanRegionFactory.Any entity instance in our application appears in one of the three main states in relation to the Session persistence context: But I'm currently getting stack traces when starting up: ![]()
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