5 | What are the main benefits of using ObjectDB? fields can be stored by ObjectDB simply as part of the containing object. Relational databases lack |
5 | ORDER BY clause (JPQL / Criteria API) is always the last in the query processing chain. If a query contains both an ORDER BY clause |
5 | 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: |
5 | JPA Queries query string (i.e. to a String instance containing JPQL). An essential interface for using |
5 | JPA MiscellaneousThis section contains miscellaneous JPA types. The PersistenceUtil and PersistenceUnitUtil interfaces provide general utility methods: The Cache interface and the CacheRetrieveMode and CacheStoreMode enum types serve in managing the EntityManagerFactory's shared (level 2) cache: Other enum types are provided for setting of various JPA operations: |
5 | Server ConfigurationThe <server> configuration element specifies settings for running an ObjectDB Server. The server is affected also by other elements in the configuration file, particularly the <users> and the <ssl> configuration elements. The default configuration file contains the following <server> element |
5 | Entity Management SettingsThe <entities> configuration element specifies front end settings that are relevant on the client side and in embedded mode. The default configuration file contains the following <entities> element: <entities> <enhancement agent="true" reflection="warning" /> <cache ref="weak" level2="0mb |
5 | Retrieving JPA Entity Objects the example above, the Employee entity class contains an address field that references an instance |
1 | Spring MVC JPA Tutorial - Maven Project should be guestbook-spring (containing the pom.xml file), and port 8080 has to be available |
1 | Step 5: Add a JSP Page> </body> </html> The JSP generates the guestbook page output, which contains a simple form |
