157 | How to Use a SF with extended Persistence Context?Hey, I have a problem to use SF with an Extended Persistence Context Regarding to Transactions. The need for an extended persistence Context emerges for the need to create queries in advance for fast ... with an extended persistence context. the GuestServlet holds reference to a SL called GuestUpdater |
33 | JPA Persistable TypesThe term persistable types refers to data types that can be used for storing data in the database. ObjectDB supports all the JPA persistable types, which are: User defined classes - Entity classes ... can be stored in the database directly. Other persistable types can be embedded in entity classes as fields |
32 | objectdb-2.6.9_06: Extended Persistence Context fails: 'Attempt to begin a new transaction when a transaction is active' with extended Persistence Context? [EDIT: 2006-09-29 New improved version of test mini web app with test mode ... () and has an entity manager with an extended persistence context. The basic idea (which used to work fine in practice ... persistence context entity manager is: @Stateful public class ExtProjectBuilder extends |
30 | What is the Java Persistence API (JPA)?The Java Persistence API (JPA) is a standard API for accessing databases from within Java ... . Using plain old Java objects (POJO) to represent persistent data can significantly simplify database ... Persistence API (JPA). By interacting with ObjectDB using standard JPA you can keep your application |
27 | Shared (L2) Entity CacheEvery EntityManager owns a persistence context, which is a collection of all the entity objects that it manages. The persistence context serves as a first level cache. An attempt to retrieve ... the persistence context, rather than a newly instantiated entity object. The scope of the persistence context |
26 | javax.persistence.PersistenceContext PersistenceContextType type (Optional) Specifies whether a transaction-scoped persistence context or an extended persistence context is to be used. (Optional) Specifies whether a transaction-scoped persistence context or an extended persistence context is to be used. Default value: javax.persistence |
6 | Step 2: Entity Class and Persistence Unit) and selecting New > Entity Class... (or New > Other... > Persistence > Entity Class and clicking ... the [Provider and Database] step just click Finish to generate a default persistence.xml file with a default persistence unit (that will be configured later). If the Finish button is disabled |
6 | Step 2: Entity Class and Persistence Unit) and selecting New > Entity Class... (or New > Other... > Persistence > Entity Class and clicking ... the [Provider and Database] step click Finish to generate a default persistence.xml file with a default persistence unit (that will be configured later). If the Finish button is disabled |
6 | Step 2: Entity Class and Persistence Unit.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public class Guest implements Serializable { private static final long serialVersionUID = 1L; // Persistent Fields: @Id @GeneratedValue Long id |
6 | Step 2: Entity Class and Persistence Unit.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity ... ; // Persistent Fields: @Id @GeneratedValue Long id; private String name ... guests in the database. We also need to configure JPA by setting a META-INF/persistence.xml file |
