12 | Obtaining a JPA Database Connection, it is very easy to begin a transaction: em.getTransaction().begin |
12 | 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 |
12 | Updating JPA Entity Objects.getTransaction().begin(); employee.setNickname("Joe the Plumber"); em.getTransaction().commit ... ); em.getTransaction().begin(); employee.projects[0] = new Project(); // not detected |
1 | Step 4: Add a Servlet Class"); if (name != null) { em.getTransaction().begin(); em.persist(new |
1 | Step 3: Define an EJB Session Bean to wrap every operation that modifies the database (such as persist) by transaction begin and commit |
1 | Step 3: Define a Spring DAO Component every operation that modifies the database (such as persist) by transaction begin and commit. The next step is adding a Controller Class. |
1 | Step 3: Add a Main Class.createEntityManager(); // Store 1000 Point objects in the database: em.getTransaction().begin |
1 | Step 3: Add a Main Class(); // Store 1000 Point objects in the database: em.getTransaction().begin |
1 | Step 3: Define a Spring DAO Component that modifies the database (such as persist) by transaction begin and commit. The next step is adding a Controller Class. |
0 | [ODB1] Chapter 9 - ObjectDB Explorer. After "File | Save" and "File | Discard Changes", the Explorer automatically begins a new |
