Besides the basic way to jump to source code, IntelliJ IDEA provides additional facilities.

To navigate to the source code of a hibernate element, do one of the following
  • In the Persistence tool window, select the desired element or attribute, and choose Jump to Source on its context menu, or just press ⌘↓, F4, ⌘↓ or F4F4 or F4F3 or F3F4, F4 or F4F4, F4 or F4. So doing, the corresponding descriptor file opens with the caret at the Hibernate class or attribute declaration.
  • In the Hibernate ER diagram of a session factory, select the desired node, and choose Edit Hibernate Class on the context menu. So doing, the corresponding Java class opens with the caret at the class declaration.