158 | Attempt to begin a new transaction when a transaction is active.getTransaction().begin(); em.persist(r); em.getTransaction().commit(); System.out.println("Entity ... ._PersistenceException: Attempt to begin a new transaction when a transaction is active root cause com.objectdb.o._PersistenceException: Attempt to begin a new transaction when a transaction is active root cause |
91 | begin()Method javax.persistence.EntityTransaction void begin() Start a resource transaction. Throws: IllegalStateException - if isActive() is true Since: JPA 1.0 |
40 | Obtaining a JPA Database Connection, it is very easy to begin a transaction: em.getTransaction().begin |
40 | Database Connection using JPA that is available via the getTransaction method: try { em.getTransaction().begin ... (); } A transaction is started by a call to begin and ended by a call to either commit or rollback |
33 | objectdb-2.6.9_06: Extended Persistence Context fails: 'Attempt to begin a new transaction when a transaction is active'._PersistenceException: Attempt to begin a new transaction when a transaction is active at com.sun.ejb ... : Attempt to begin a new transaction when a transaction is active Again, this used not to happen ... ) //'com.objectdb.o.UserException: Attempt to begin a new transaction |
28 | Chapter 3 - Using JPAExplains how to store, retrieve, update and delete entity objects using JPA. |
18 | Storing JPA Entity Objects", "Joseph", "Wurzelbacher"); em.getTransaction().begin(); em.persist(employee); em ... .setAddress(address); em.getTransaction().begin(); em.persist(employee); em.getTransaction ... can be used to save memory in large transactions: em.getTransaction().begin(); for (int i = 1; i |
16 | CRUD Database Operations with JPA code fragment stores 1,000 Point objects in the database: em.getTransaction().begin(); for (int ... of an active transaction: em.getTransaction().begin(); em.remove(p); // delete entity em ... .getTransaction().begin(); p.setX(p.getX() + 100); // update entity em.getTransaction().commit |
9 | begin()Method javax.jdo.Transaction void begin() Begin a transaction. The type of transaction is determined by the setting of the Optimistic flag. Throws: JDOUserException - if transactions are managed by a container in the managed environment, or if the transaction is already active. Since: JDO 1.0 See Also: setOptimistic getOptimistic |
2 | [ODB1] Chapter 6 - Persistent Objects the following code: pm.currentTransaction().begin(); Person person = new Person("George", "Bush ... ); pm.currentTransaction().begin(); pm.makePersistent(person); pm.currentTransaction ... ().begin(); Person person = new Person("George", "Bush"); pm.makePersistent(person); Object oid = pm |
