8 | Database Management Settings and page size settings: The initial attribute specifies the initial size of every new database file ... . When the specified maximum is reached - new requests are pending until previous requests ... are handled. When a new index is defined for an existing entity class that already has instances |
8 | Retrieving JPA Entity Objects entity object is not found in the persistence context a new object is constructed and filled with data that is retrieved from the database (or from the L2 cache - if enabled). The new entity object ... . Notice that construction of a new managed object during retrieval uses the no-arg constructor |
8 | CRUD Database Operations with JPA it to store, retrieve, update and delete database objects. Storing New Entity Objects The following ... i = 0; i < 1000; i++) { Point p = new Point(i, i); em.persist(p); } em.getTransaction().commit(); Operations that modify the content of the database (such as storing new objects |
1 | Step 3: Define an EJB Session Bean that we will define in this step: Open the [New Session Bean] dialog box by right clicking the guest package node (in the [Projects] window), selecting New > Other... > Java EE (or Enterprise JavaBeans ... class name. The Java package name should be guest. Click Finish to create the new session bean (EJB |
1 | Step 3: Define a Spring DAO Component) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Projects] window under Source Packages) and selecting New ... . The Package should be guest. Click Finish to create the new DAO Spring component class. Now replace |
1 | Step 3: Define a Spring DAO Component) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selecting New > Class ... name. Click Finish to create the new DAO Spring component class. Now replace the content of the new |
1 | Step 2: Define a JPA Entity ClassTo store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... ) and selecting New > Java Class... Enter Guest as the class name - use exactly that case sensitive class name ... to create the new class. Use copy and paste to replace the new source file content with the following |
1 | Step 1: Create a Web ProjectWe start by creating a new Eclipse Dynamic Web Project: Open the [New Project] dialog box, e.g. by using File > New > Project... Select Web > Dynamic Web Project and click Next. Choose a Project Name ... 6 as a new server by clicking the New Runtime... button. Follow the instructions and specify |
1 | Step 3: Define an EJB Session Bean that we will define in this step: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selecting New > Class. The package name should be guest ... the new session bean (EJB) class. Now replace the content of the new source file with the following |
1 | Step 2: Define a JPA Entity ClassTo store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New ... ) and selecting New > Java Class... Enter Point as the class name - use exactly that case sensitive class name. The package name should be tutorial. Click Finish to create the new class. Use copy |
