tustvold commented on code in PR #3303:
URL: https://github.com/apache/arrow-rs/pull/3303#discussion_r1044357464
##########
arrow-string/src/like.rs:
##########
@@ -589,62 +588,39 @@ fn ilike_scalar_op<'a, F: Fn(bool) -> bool, L:
ArrayAccessor<Item = &'a str>>(
right: &str,
op: F,
) -> Result<BooleanArray, ArrowError> {
- let null_bit_buffer = left.data().null_buffer().cloned();
- let bytes = bit_util::ceil(left.len(), 8);
- let mut bool_buf = MutableBuffer::from_len_zeroed(bytes);
- let bool_slice = bool_buf.as_slice_mut();
-
if !right.contains(is_like_pattern) {
// fast path, can use equals
let right_uppercase = right.to_uppercase();
- for i in 0..left.len() {
- unsafe {
- if op(left.value_unchecked(i).to_uppercase() ==
right_uppercase) {
- bit_util::set_bit(bool_slice, i);
- }
- }
- }
+
+ Ok(BooleanArray::from_unary(left, |item| {
+ op(item.to_uppercase() == right_uppercase)
+ }))
} else if right.ends_with('%')
&& !right.ends_with("\\%")
&& !right[..right.len() - 1].contains(is_like_pattern)
{
// fast path, can use starts_with
let start_str = &right[..right.len() - 1].to_uppercase();
- for i in 0..left.len() {
- unsafe {
- if op(left
- .value_unchecked(i)
- .to_uppercase()
- .starts_with(start_str))
- {
- bit_util::set_bit(bool_slice, i);
- }
- }
- }
+ Ok(BooleanArray::from_unary(left, |item| {
+ op(item.to_uppercase().starts_with(start_str))
+ }))
} else if right.starts_with('%') && !right[1..].contains(is_like_pattern) {
// fast path, can use ends_with
let ends_str = &right[1..].to_uppercase();
- for i in 0..left.len() {
- unsafe {
- if
op(left.value_unchecked(i).to_uppercase().ends_with(ends_str)) {
- bit_util::set_bit(bool_slice, i);
- }
- }
- }
+ Ok(BooleanArray::from_unary(left, |item| {
+ op(item.to_uppercase().ends_with(ends_str))
+ }))
} else if right.starts_with('%')
&& right.ends_with('%')
+ && !right.ends_with("\\%")
Review Comment:
This appears to have been an omission from
https://github.com/apache/arrow-rs/pull/2743
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