[jira] [Created] (ZEST-103) ORM system

["Niclas Hedhman (JIRA)" <ji...@apache.org>]

Niclas Hedhman created ZEST-103:
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             Summary: ORM system
                 Key: ZEST-103
                 URL: https://issues.apache.org/jira/browse/ZEST-103
             Project: Zest
          Issue Type: New Feature
            Reporter: Niclas Hedhman


Over the years we have several times tried to figure out how to incorporate ORM technology to Zest, and kept failing. Hibernate was tried in 2007, and iBatis was attempted in 2008, and although the latter showed some reasonable promise, it didn't manage to reach all the way.

We have since done a lot to let extensions into the runtime model, and we have more features around Associations in Property and NamedAssociations which I don't think existed in those days.

I think it is time to re-open this effort, as it is the constant push-back whenever I introduce Zest to new people. It is an easy "ok, you don't have that, therefor I have no interest in listening to you." and any other argument is ignored.

I think it is more important to be able to use existing tables, than to support arbitrary Zest Entity structures to always have a reasonable SQL structure. I.e. SQL schema rules the Entities. Then from there we could investigate further what full Mixin support would entail.

Before starting the implementation, I think we should gather usecase and lay out in documentation how various common schemas can be handled into Zest entities and values.



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