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Forum
14

Best practice: Database update/migration of embedded databases in products

is now held otherwise. The product store user data in the ObjectDB-Database. Example: V1.0: EntityPerson ... city;}     DB3: [name=”Max Mustermann”; zip=”26135”; city=”Oldenburg”] How can we load the Database ... -> V2.0 directly, and you make sure that on upgrade all the old objects are converted and stored in
JPA Doc
14

javax.persistence.EntityManager

void refresh(Object entity) Refresh the state of the instance from the database, overwriting changes ... - if the entity no longer exists in the database Since: JPA 2.0 void refresh(Object entity, LockModeType ... database. Since: JPA 1.0 See Also: Query TypedQuery CriteriaQuery PersistenceContext Learn how to use
Tutorial
14

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... to create the new class. The new class should represent Guest objects in the database. Use copy ... + ")"; } }  The new class should represent Guest objects in the database. Besides the @Entity
Tutorial
14

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... provider with the specified database url. The next step is adding an EJB Session Bean that will manage Guest entity objects. ... the [Provider and Database] step just click Finish to generate a default persistence.xml file
Tutorial
14

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... to create the new class. A new class that should represent Guest objects in the database was created in ... database url. The next step is adding an EJB Session Bean that will manage Guest entity objects.
Tutorial
14

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... the [Provider and Database] step click Finish to generate a default persistence.xml file ... fill the fields with arbitrary values to enable it. A new entity class that should represent Guest objects in
Tutorial
14

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Right click ... that should represent Guest objects in the database was created in the project (under Java Resources ... guests in the database. We also need to configure JPA by setting a META-INF/persistence.xml file
FAQ
13

What are the main benefits of using ObjectDB?

performance. Reducing Development Time and Costs ObjectDB makes database programming easier and faster. The ability to store ordinary objects in the database directly can simplify the code significantly ... fields can be stored by ObjectDB simply as part of the containing object. Relational databases lack
Tutorial
13

Step 3: Define an EJB Session Bean

two methods: persist - for storing a new Guest entity object in the database. getAllGuests - for retrieving all the existing Guest objects from the database. EJB classes are only supported by Java EE ... Operations on the database will be performed by an instance of a session bean (EJB) class
Tutorial
13

Step 3: Define an EJB Session Bean

the database. getAllGuests - for retrieving all the existing Guest objects from the database. EJB classes ... Operations on the database will be performed by an instance of a session bean (EJB) class ... ; @Stateless public class GuestDao { // Injected database connection