9 | Is ObjectDB scalable? What are its limitations? supports: Database file size up to 128 TB (= 131,072 GB = 134,217,728 MB). Up to 2,147,483,648 entity classes per database file. Up to 2,147,483,648 indexes per database file. Up to 9,223,372,036,854,775,808 entity objects per database file. Unlimited database connections (limited by operating system resources). |
8 | javax.persistence.spi.PersistenceUnitInfo-unlisted-classes element in the persistence.xml file. Returns: whether classes in the root ... files or exploded jar file directories that the persistence provider must examine for managed classes of the persistence unit. Returns a list of URLs for the jar files or exploded jar file directories |
8 | Schema Update refactoring. Only these schema changes are specified in the configuration file. As explained in ... your database files before renaming or moving persistable classes and you must verify ... . The default configuration file contains an empty <schema> element. If the <schema> element is not empty |
1 | Step 7: Run the Spring Web App the content of the index.jsp file (which serves as the default front page) with the following redirection ... the persistence.xml file - instead of RESOURCE_LOCAL you will have to specify JTA. To enable on the fly automatic ... without specifying a Java agent. Since we are using ObjectDB in embedded mode - the database file is created |
1 | Step 5: Add a JSP PageIn this step we will add the JSP that generates the guestbook page output: Open the [New JSP File ... ... Enter guest as the jsp file name - use exactly that case sensitive class name. Click Finish to create the new JSP file. Now replace the content of the new jsp file with the following content |
1 | Step 4: Run the ApplicationYou can now run the application by right clicking the Main.java file (in the [Package Explorer ... ) When you run the application for the first time, a new ObjectDB database file is generated in ... will use the existing database file to store an additional 1000 objects. You can view the content |
1 | Step 5: Add a JSP PageIn this step we will add the JSP that generates the guestbook page output: Open the [New JSP File ... ... Enter guest as the jsp file name - use exactly that case sensitive class name. Click Finish to create the new JSP file. Now replace the content of the new jsp file with the following content |
1 | JPA Web App Tutorial - IntelliJ Project the project zip file: JPA Web App - Maven Project (6KB) Open the project in IntelliJ IDEA: Select File > Open Project.... Select the guestbook-web directory and click OK. Define the Server: Select File ... and click the green run icon (or Shift+F10). If the browser fails to open check the settings at File > Settings > Web Browsers. |
1 | Java EE 6 JPA Tutorial - IntelliJ Project and extract the project zip file: Java EE JPA Web App - Maven Project (7KB) Open the project in IntelliJ IDEA: Select File > Open Project.... Select the guestbook-jee6 directory and click OK. Define the Server: Select File > Settings > Application Servers. Add Tomcat 6 Server if not set already (Tomcat |
1 | Step 7: Run the Spring Web App the content of the index.jsp file (which serves as the default front page) with the following redirection ... change in the persistence.xml file - instead of RESOURCE_LOCAL you will have to specify JTA. Since we are using ObjectDB in embedded mode - the database file is created under the Tomcat directory |
