Operating Systems: i5/OS
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Inheritance in EJB query
If an Enterprise JavaBeans (EJB) inheritance hierarchy has been
defined for an abstract schema, using the abstract schema name in a query
statement implies the collection of objects for that abstract schema as well
as all subtypes.
Example: Inheritance
Suppose that
bean ManagerBean is defined as a subtype of EmpBean and ExecutiveBean is
a subtype of ManagerBean in an EJB inheritance hierarchy. The following
query returns employees as well as managers and executives:
SELECT OBJECT(e) FROM EmpBean e
Related concepts
EJB query language
Related tasks
Using EJB query