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Editorial Team
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Asked: 2026-06-04T07:00:56+00:00

I wonder what is the best way to implement dynamic domain model persisted in

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I wonder what is the best way to implement dynamic domain model persisted in SQL database?
Saying dynamic domain model I mean such model when user can change “class” of object by adding or removing properties.

For example: little internet shop where manager can add new types of product with web-interface.
Should I use something like Map everywhere? Maybe it is better to keep only dynamic part of object in Map? Or maybe runtime class generation will help? Or I should take a tour over dynamic languages like Groovy? I have tested first and second methods and this is real headache to develop in such way.

What is the common practise?

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1 Answer

  1. Editorial Team

    You have a 1 to 1 from product to product type. So product has a member var called productType. You’ll also have a 1-to-many from product to features. So the product class will have a list of features.

    I can’t imagine a more wrong way to do this then using cglib to create classes on the fly.

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