dragosmg commented on a change in pull request #11417:
URL: https://github.com/apache/arrow/pull/11417#discussion_r729072998
##########
File path: r/R/dplyr-functions.R
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@@ -915,6 +915,9 @@ nse_funcs$case_when <- function(...) {
if (!nse_funcs$is.logical(query[[i]])) {
abort("Left side of each formula in case_when() must be a logical
expression")
}
+ if (inherits(value[[i]], "try-error")) {
+ abort("There is an error in the right side of the case_when() formula")
Review comment:
Any error generated inside `case_when()` is ignored when we call
`case_when()` inside `mutate()`, which clocks the error and issues its own
interpretation of what is going on. Not quite sure how to surface the
`case_when()` error information.
This is the error we would be getting from this implementation (I made a
comment about it in the PR description):
```
Warning: Expression case_when(!(!(!(lgl))) ~ factor(chr), TRUE ~ fct) not
supported in Arrow;
pulling data into R
```
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