Add regex_program searching APIs and related java classes

[cindyyuanjiang]

Signed-off-by: Cindy Jiang [email protected]

Description

This PR adds contains_re, matches_re, count_re, findall related regex_program java APIs and unit tests, and RegexProgram, RegexFlag, and CaptureGroups java classes to support these regex_program APIs.

Part of work for NVIDIA/spark-rapids#7295.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (branch-23.04@3aab6b8). Click here to learn what that means.
Patch has no changes to coverable lines.

Additional details and impacted files

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[jlowe]

The new classes seem OK, but normally we do not add classes and APIs without the ability for the user to meaningfully wield it. There are no tests of these new APIs to prove they work and are useful, and there's nothing that can be meaningfully done with them as-is.

Should we at least add this API to some Table or ColumnView method to both provide a test surface for it and a meaningful way to start using it? We wouldn't have to put the new class in all potential places in one PR, but not putting it anywhere seems a bit less than ideal.

[davidwendt]

Is there a way to test this through the Spark test suite before merging so we can catch any potential errors like those found during the end of the last release?

[cindyyuanjiang]

The new classes seem OK, but normally we do not add classes and APIs without the ability for the user to meaningfully wield it. There are no tests of these new APIs to prove they work and are useful, and there's nothing that can be meaningfully done with them as-is.

Yes, thank you. I will update to include some usage of the added classes.

[cindyyuanjiang]

Is there a way to test this through the Spark test suite before merging so we can catch any potential errors like those found during the end of the last release?

Yes, I will test the changes in the Spark plugin to avoid issues encountered before. Thanks!

[msadang]

LGTM