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https://issues.apache.org/cayenne/browse/CAY-969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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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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