GH-45284: [Parquet][C++] Proposed RowRanges API

[poshul]

Rationale for this change

Based on @wgtmac 's #45234 This attempts to address the comments in that PR

What changes are included in this PR?

add an experimental row_selection API

Are these changes tested?

Yes

Are there any user-facing changes?

Yes

• GitHub Issue: [Parquet][C++] PageIndex is useless with current API #45284

[github-actions]

Thanks for opening a pull request!

If this is not a minor PR. Could you open an issue for this pull request on GitHub? https://github.com/apache/arrow/issues/new/choose

Opening GitHub issues ahead of time contributes to the Openness of the Apache Arrow project.

Then could you also rename the pull request title in the following format?

GH-${GITHUB_ISSUE_ID}: [${COMPONENT}] ${SUMMARY}

or

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See also:

• Other pull requests
• Contribution Guidelines - Contributing Overview

[poshul]

@emkornfield any thoughts on this as a proposed first step?

[github-actions]

⚠️ GitHub issue #45284 has been automatically assigned in GitHub to PR creator.

[emkornfield]

It seems like validation should happen on construction?

[poshul]

That probably makes sense. I've moved it so that it gets called before any of the functions the create RowSelections return.

[emkornfield]

Took a look at the top-level public API, looks reasonable to me. If you need a full review please ping me.

Apologies for the delay.

[poshul]

Took a look at the top-level public API, looks reasonable to me. If you need a full review please ping me.

Apologies for the delay.

No worries for the delay, January is just a difficult month. I would appreciate a full review if you have the time for it.