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?

score 2 · Answer 1 · answered Sep 26 '10 at 21:37

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

answered Sep 26 '10 at 21:37

DataNucleus

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score 1 · Answer 2 · answered Aug 25 '11 at 07:27

Perhaps DataNucleus is a choice for you as it supports different kind of storage backends. The xml storage plugin or the embedded database db4o storage plugin might be an option, but both use a single file for all objects instead of one file per object.

score 0 · Answer 3 · answered Oct 01 '10 at 17:38

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

answered Oct 01 '10 at 17:38

Neil Stockton

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Is there a flat files JDO implementation?

3 Answers3