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JPA Doc
7

JPA Exceptions

) . For example, if a transaction fails because of an attempt to store a new entity object with a primary
Tutorial
7

Step 4: Run the Application

installation directory. Running the application again will use the existing database file to store
Tutorial
7

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Entity Class] dialog box, e.g. by right clicking the project node (in the [Projects] window) and selecting New > Entity Class... (or New > Other... > Persistence > Entity Class and clicking
Tutorial
7

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Java Class] dialog box, e.g. by right clicking the project node (in the [Projects] window) and selecting New > Java Class... Enter Guest as the class name - use exactly that case sensitive class name
Manual
7

ObjectDB Developer's Guide [2018-08-07]

.             Shows how to use JPA to store, retrieve, update and delete database objects.             Explains
Manual
7

Database Management Settings

stored in the database, the index cannot be used until all the existing instances are indexed
Tutorial
7

Step 2: Entity Class and Persistence Unit

To store objects in an ObjectDB database using JPA we need to define an entity class: Right click the project node (in the [Package Explorer] window), select New > Source Folder, enter src/main/java as Folder Name and click Finish. Open the [New Java Class] dialog box, e.g. by right clicking
Manual
7

JPA Persistence Unit

only when the containing classes become known to ObjectDB, for example when a first instance of the class is stored in the database.
Manual
7

Database Connection using JPA

); EntityTransaction Operations that affect the content of the database (store, update, delete
Tutorial
7

Step 4: Add a Controller Class

entity object is constructed and stored in the database. Processing is forwarded to a JSP page