ARROW-15452: [FlightRPC][Java] JDBC driver for Flight SQL

[rafael-telles]

This implements a JDBC driver able to communicate to Flight SQL sources.

So far this covers:

• Metadata retrieval by DatabaseMetadata, ResultSetMetadata, etc.
• Query execution by statements and prepared statements

Yet to be done:

• Parameter binding on prepared statements

[github-actions[bot]]

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See also:

• Other pull requests
• Contribution Guidelines - How to contribute patches

[github-actions[bot]]

https://issues.apache.org/jira/browse/ARROW-15452

[github-actions[bot]]

:warning: Ticket has not been started in JIRA, please click 'Start Progress'.

[rafael-telles]

Thank you so much @lidavidm ! We will be working on your feedback soon

[wesm]

I just wanted to echo my comment from the mailing list that I think it would be best if we held a code donation vote and IP clearance for this piece of work since it is substantial and was developed outside of the Arrow community. I don't expect there will be any issues but it is good due diligence. As a reminder we welcome the development of large new projects in feature branches, where the development process otherwise is conducted according to the Apache Way (public discussions, issues, PRs, etc.)

I believe this will involve a Software Grant from Dremio (correct me if I'm wrong) for the work and ICLAs for the individual contributors.

[lidavidm]

Thanks for chiming in Wes - I'll look into the process and follow up on the mailing list @rafael-telles.

[lidavidm]

BTW, please let us know when you think this is ready for a full review

[lidavidm]

This can be rebased against the accepted proposals now.

[lidavidm]

For the IP clearance (moved to #12830)

[pitrou]

@rafael-telles It seems this needs rebasing on git master and then fixing conflicts, would you like to do that?

[lidavidm]

We should probably close this PR in favor of a new PR based on the cleared code

[amol-]

Closing because it has been untouched for a while, in case it's still relevant feel free to reopen and move it forward 👍