Andrus Adamchik closed CAY-969.
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Resolution: Won't Fix
But you can have multiple DataMaps (and multiple corresponding XML files) already in a single project.
> Need ability to break data maps into multiple XML files (on entity by entity basis)?
> ------------------------------------------------------------------------------------
>
> Key: CAY-969
> URL: https://issues.apache.org/cayenne/browse/CAY-969
> Project: Cayenne
> Issue Type: New Feature
> Components: Cayenne Core Library, CayenneModeler GUI
> Affects Versions: UNDEFINED FUTURE
> Reporter: Michael Bergens
> Assignee: Andrus Adamchik
>
> Problem: suppose it takes 5K per small table or twice that (10K) for a bigger table definition in the data map file. When the table count shoots up into several hundreds, we are looking into datamap XML files several megs big. Now suppose you store the Cayenne xmls under a version control and use it to track the changes. The size along with natural problems of XML versioning makes it very difficult to understand any arbitrary non-trivial change in the past. If there was a chance to break those files on entity-by-entity basis, that would make change tracking easy.
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