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Posted to issues@arrow.apache.org by "Jonathan Keane (Jira)" <ji...@apache.org> on 2021/11/03 14:03:00 UTC
[jira] [Created] (ARROW-14575) [R] Allow functions with {{pkg::}}
prefixes
Jonathan Keane created ARROW-14575:
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Summary: [R] Allow functions with {{pkg::}} prefixes
Key: ARROW-14575
URL: https://issues.apache.org/jira/browse/ARROW-14575
Project: Apache Arrow
Issue Type: Bug
Components: R
Reporter: Jonathan Keane
Assignee: Dewey Dunnington
Currently we implement a number of functions from packages like {lubridate} which work well when called without namespacing (e.g. {{year()}}), however if someone calls {{lubridate::year()}} we get a not-implemented method (e.g. {{Warning: Expression lubridate::year(time_hour) not supported in Arrow}}). Is it possible for us to look and see if we have an arrow function that matches the function itself.
{code:r}
library(arrow, warn.conflicts = FALSE)
library(dplyr, warn.conflicts = FALSE)
ds <- InMemoryDataset$create(nycflights13::flights)
ds %>%
mutate(year = lubridate::year(time_hour)) %>%
collect()
#> Warning: Expression lubridate::year(time_hour) not supported in Arrow; pulling
#> data into R
#> # A tibble: 336,776 × 19
#> year month day dep_time sched_dep_time dep_delay arr_time sched_arr_time
#> <dbl> <int> <int> <int> <int> <dbl> <int> <int>
#> 1 2013 1 1 517 515 2 830 819
#> 2 2013 1 1 533 529 4 850 830
#> 3 2013 1 1 542 540 2 923 850
#> 4 2013 1 1 544 545 -1 1004 1022
#> 5 2013 1 1 554 600 -6 812 837
#> 6 2013 1 1 554 558 -4 740 728
#> 7 2013 1 1 555 600 -5 913 854
#> 8 2013 1 1 557 600 -3 709 723
#> 9 2013 1 1 557 600 -3 838 846
#> 10 2013 1 1 558 600 -2 753 745
#> # … with 336,766 more rows, and 11 more variables: arr_delay <dbl>,
#> # carrier <chr>, flight <int>, tailnum <chr>, origin <chr>, dest <chr>,
#> # air_time <dbl>, distance <dbl>, hour <dbl>, minute <dbl>, time_hour <dttm>
ds %>%
mutate(year = year(time_hour)) %>%
collect()
#> # A tibble: 336,776 × 19
#> year month day dep_time sched_dep_time dep_delay arr_time sched_arr_time
#> <int> <int> <int> <int> <int> <dbl> <int> <int>
#> 1 2013 1 1 517 515 2 830 819
#> 2 2013 1 1 533 529 4 850 830
#> 3 2013 1 1 542 540 2 923 850
#> 4 2013 1 1 544 545 -1 1004 1022
#> 5 2013 1 1 554 600 -6 812 837
#> 6 2013 1 1 554 558 -4 740 728
#> 7 2013 1 1 555 600 -5 913 854
#> 8 2013 1 1 557 600 -3 709 723
#> 9 2013 1 1 557 600 -3 838 846
#> 10 2013 1 1 558 600 -2 753 745
#> # … with 336,766 more rows, and 11 more variables: arr_delay <dbl>,
#> # carrier <chr>, flight <int>, tailnum <chr>, origin <chr>, dest <chr>,
#> # air_time <dbl>, distance <dbl>, hour <dbl>, minute <dbl>, time_hour <dttm>
{code}
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