Create version mappings

Use a Version Mapping to specify the database field used by a persistent entity for optimistic locking.

  1. Select the Employee entity in the Package Explorer view.

  2. In the JPA Structure view, select the version field of the Employee entity. The JPA Details view (for attributes) displays the properties for the field.

  3. In the Map As field, select Version.

    Version Mapping for version

    JPA Details view for the version field.

Dali automatically selects the Version column in the EMPLOYEE database table. In the JPA Structure, the Version field is identified as a version mapping, as shown in the following figure:

JPA Structure for Employee Entity

The version attribute of the Employee entity in the JPA Structure view.

Congratulations! All of the entities have been successfully mapped.