Problems with Single Table Inheritance Strategy (and Discriminator Type of
Integer)
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Key: OPENJPA-143
URL: https://issues.apache.org/jira/browse/OPENJPA-143
Project: OpenJPA
Issue Type: Bug
Components: jpa
Reporter: Kevin Sutter
Using the @DiscriminatorType of Integer with Single Table Inheritance, I've
come across two problems...
o The @DiscriminatorValue seems to be required on abstract classes in the
hierarchy. This should not be required. Actually, according to section 9.1.31
of the spec, this annotation should only be required on concrete classes. But,
without this annotation, I am getting an exception about not being able to cast
a String to an Int.
o This exception that I am receiving with a "missing" @DiscriminatorValue
would indicate that the default value being provided by OpenJPA is a String all
the time instead of basing the default the value off of the DiscriminatorType
of Integer. This is further described in Table 21 of section 9.1.31 of the
spec.
As described, I have a workaround by specifying a @DiscriminatorValue on the
abstract class, but these seem to be real problems that need to be addressed.
Thus, this defect.
Kevin
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