[marschall]

Deprecate Derby support since Apache Derby is retired since 2023.

Closes gh-36042

[marschall]

Draft since main is still 7.0.

I did no log any warnings when Derby support is used. I'm not aware of such a thing being done anywhere today, let me know if I should add it.

I marked only main code for removal, no tests. I had to add @SuppressWarnings to main code using deprecated Derby code for the build to work.

I did one small semi-related change, I replaced OutputStreamFactory.getNoopOutputStream() with OutputStream.nullOutputStream(). org.springframework.jdbc.datasource.embedded.OutputStreamFactory now has no users left, we could deprecate it as well.

The checked in documentation still mentions Derby in quite a few places, let me know if I should remove it from there.

I believe this should go to the 7.1 changelog. I did find a changelog checked in. Are these manually maintained?

[bclozel]

Thanks for your contribution @marschall !