Is there a flat files JDO implementation?

Question

I have a simple app I'd like to use JDO. But I don't want to use any DB back, just regular file system. Before jdo, I had this class it serializes it object to a file whereas file name is the "primary key". I'd like to be able to do the same thing with JDO. Is that possible?

Answer 1

Reference Implementation for JDO 1.0 used flat files. Look at Apache JDO which ought to contain the original files

Answer 2

Some time ago I used the JDO 1.0.1 file implementation and worked fine for my simple cases