1 | Chapter 2 - JPA Entity ClassesJPA Entity classes are user defined classes whose instances can be stored in a database. To store data in an ObjectDB database using JPA you have to define entity classes that represent your application data object model. This chapter explains how to define and use entity classes. |
1 | JPA Annotations for Java EEThe following JPA annotations are in use to integrate JPA into a Java EE application and are managed by the Java EE container: |
1 | Locking in JPA automatic. Optimistic locking should be the first choice for most applications, since compared |
1 | Deleting JPA Entity Objects well. Cascading may continue recursively when applicable (e.g. to entity objects that the Address |
1 | Entity Management Settings performance. However, for some applications disabling this ability could be more efficient. The <persist |
1 | Posting Sample Code / embeddable classes. Avoid dependency on external libraries. Use a console application with a main method |
1 | Database Management Settings for most applications. The <recovery> element <recovery enabled="true" sync="false" path="." max |
1 | Strings in JPQL and Criteria Queries and when applicable simple Java objects as well as criteria expressions. |
0 | Step 1: Create a Java ProjectWe start by creating a new NetBeans Project: Open the [New Project] dialog box, e.g. by using File > New Project... Select Java > Java Application and click Next. Choose a Project Name (e.g. Tutorial). The name of the Main class should be tutorial.Main. Verify that exactly this case sensitive fully |
0 | Step 3: Define a Spring DAO Component the application to the Spring Framework. For instance, in this example the Spring container: Manages |
