harrygav commented on PR #665:
URL: https://github.com/apache/wayang/pull/665#issuecomment-3947323225

   Hi all, picking up on this one again. I just pushed a commit with the 
update: 
   
   - Support for more types, using reflection. Currently we support POJOs but 
also Wayang Records.
   - Support for different backend DBMSes, added the Calcite dependency to 
wayang-basic for that
   - Introduced more tests for the JavaTableSink and SparkTableSink
   - Added the H2 in-memory DBMS for the tests locally, removing the dependency 
on an external PostgreSQL DBMS running
   
   I think it would be wise to add a couple of DBMSes for the tests, which 
would also be useful for the source operators or supporting JDBC platforms 
themselves. This could be done either through their embedded versions or 
through maven testcontainers. Then, we could add support for sinks on other 
platforms, e.g., the JDBC platform, to also support DBMS->DBMS workloads.
   
   Let me know what you think about the PR, and if we want to do some of the 
next steps (e.g., testing) here or in another PR.


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