Datanode -> XML

[Aristedes Maniatis]

I am looking at a way to export and import data from a Derby database. Built into Derby itself is a tool which exports CSV or tab delimited data, but this has a range of problems with binary data and with compatibility across platforms and different databases, as well as across upgrades of the schema.

Another option is to use Cayenne itself to perform the migration, with an XML dataNode as the repository for the data. I know that EOF does this sort of thing natively, but I don't believe XML datanodes are available in Cayenne. Has anyone attempted something similar with one of the JDBC-XML drivers (for example: https://xlsql.dev.java.net/)?

Thanks
Ari Maniatis




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Speed is likely to be awful, but that is OK for this purpose. It also comes to mind that this approach might be a great way to write unit tests for our system, testing the code against a standard set of sample data.

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