EZPDO User Forums

Jon kindly send us examples that show how polymorphism/inheritence can be easily persisted with EZPDO. The code for the examples can be downloaded here. Thanks Jon. -el

p.s. Jon's email to us:

jon wrote:

Dear EZPDO people,

A while back now I asked whether EZPDO was capable of hanlding polymorphism. With
your help I was able to prove that it can (at least with abstract classes if not
interfaces :). I also promised to write some examples.

I have finally had a chance to do just that. Please find attached a zip file
containing two examples (please place them in the example directory of the EZPDO
distribution for them to run).

The first "Polymorphism" - is simple example using the same books related
metaphor found in other examples.

The second "Polymorphism2" - is a better example of polymorphism (it's really
difficult to think of a decent way to show polymorphism with books :). This
example uses different shapes (Circle and Square) which extend the Shape abstract
class.

I hope you find them useful and that others do as well.

Regards and thanks for all your hard work. It is appeaciated.

Jon Moss