Teeid can offer schema discovery, schema creation, data massaging from one format to another, and handle writes.

ETL is all about that:

• Extract
• Tranform
• Load
  in batch mode.

With the dawn of batch mode in JEE7, it could be interesting to add ETL functionality, possibly in the form of a continuous datamover, or a batch datamover, which could also be used in a complete database migration scenario.