5 | JPA / JDO Class Enhancer objects. With no enhancement, only persistent collection and map fields can be loaded lazily (by using proxy objects), but persistent fields that reference entity objects directly |
5 | JPA Named Queries" that retrieves all the Country objects in the database: @NamedQuery(name="Country.findAll", query ... mainly for Object Relational Mapping (ORM) JPA providers and less so when using ObjectDB ... classes that have objects in the database. However, an attempt to use a named query still might fail |
1 | Step 2: Entity Class and Persistence UnitTo 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. |
1 | Step 4: Add a Controller Class Guest entity object is constructed and stored in the database. Processing is forwarded to a JSP page ... the GuestDao component to display the existing Guest objects. The returned ModelAndView object defines |
1 | Step 2: Entity Class and Persistence UnitTo store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... fill the fields with arbitrary values to enable it. A new entity class that should represent Guest objects ... provider with the specified database url. The next step is adding an EJB Session Bean that will manage Guest entity objects. |
1 | Step 3: Define a Spring DAO ComponentOperations on the database will be performed by an instance of a Data Access Object (DAO ... - for storing a new Guest entity object in the database. getAllGuests - for retrieving all the existing Guest objects from the database. By using Spring components we can move some work from |
1 | Step 2: Entity Class and Persistence UnitTo 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 ... . The next step is adding a Spring DAO Component class that will manage Guest entity objects. |
1 | Step 4: Add a Controller Class entity object is constructed and stored in the database. Processing is forwarded to a JSP page ... component to display the existing Guest objects. The returned ModelAndView object defines a target JSP |
0 | javax.jdo.JDOHelperjavax.jdo Class JDOHelper java.lang.Object javax.jdo.JDOHelper Implemented Interfaces ... : the thread-safe singleton JDOHelper Since: JDO 2.1 Object getObjectId(Object pc) Return a copy ... See Also: PersistenceManager.getObjectId(Object pc) PersistenceCapable.jdoGetObjectId() PersistenceManager |
0 | ObjectDB 1.0 Manual applications using ObjectDB and JDO (Java Data Objects), the revolutionary database programming ... and transactions in JDO. Chapter 6 - Persistent Objects Shows how to store, retrieve, update and delete database objects. Chapter 7 - JDOQL Queries Describes JDOQL, the JDO Query Language. The last |
