ARROW-17737: [R] Groups before conversion to a Table must not be restored after `collect()`#14175

Merged

nealrichardson merged 22 commits intoapache:masterfrom

eitsupi:r-group-convert

Oct 14, 2022

Commits on Oct 14, 2022

add tests for compute

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rename file to match name of file to be tested

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fix tests

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remove unused line

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Revert "rename file to match name of file to be tested"

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move test to the other file and rename the test case

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add tests for compute and collect

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more test

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use NULL for empty group vars, and remove group vars metadata from .data

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restore group vars from arrow dplyr query to Table

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arrow_dplyr_query$group_by_vars should character, and metadata$r$attributes$.group_vars should not character(0)

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fix

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use as_arrow_table instead of collect

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fix typo

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add tests

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add tests

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ensure not to convert to a grouped_df

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change to manipulate groups only when necessary

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separate the test case

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fix rebasing

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ensure ungroup .data if it is a Table

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more simplify

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