Java Persistence API (JPA) Extensions Reference for EclipseLink, Release 2.5
  Go To Table Of Contents


Use TREAT to cast an object as its subclass value (that is, downcast related entities with inheritance).


Example 3-14 shows how to use this JPQL extension.

Example 3-14 Using TREAT EQL

SELECT e FROM Employee JOIN TREAT(e.projects AS LargeProject) p WHERE p.budget > 1000000

See Also

For more information, see: