sunng87 commented on code in PR #17985:
URL: https://github.com/apache/datafusion/pull/17985#discussion_r2423126216
##########
datafusion/physical-expr/src/expressions/binary/kernels.rs:
##########
@@ -164,3 +172,129 @@ pub fn concat_elements_utf8view(
}
Ok(result.finish())
}
+
+/// Invoke a compute kernel on a pair of binary data arrays with flags
+macro_rules! regexp_is_match_flag {
+ ($LEFT:expr, $RIGHT:expr, $ARRAYTYPE:ident, $NOT:expr, $FLAG:expr) => {{
+ let ll = $LEFT
+ .as_any()
+ .downcast_ref::<$ARRAYTYPE>()
+ .expect("failed to downcast array");
+ let rr = $RIGHT
+ .as_any()
+ .downcast_ref::<$ARRAYTYPE>()
+ .expect("failed to downcast array");
+
+ let flag = if $FLAG {
+ Some($ARRAYTYPE::from(vec!["i"; ll.len()]))
+ } else {
+ None
+ };
+ let mut array = regexp_is_match(ll, rr, flag.as_ref())?;
+ if $NOT {
+ array = not(&array).unwrap();
+ }
+ Ok(Arc::new(array))
+ }};
+}
+
+pub(crate) fn regex_match_dyn(
+ left: ArrayRef,
+ right: ArrayRef,
+ not_match: bool,
+ flag: bool,
+) -> Result<ArrayRef> {
+ match left.data_type() {
+ DataType::Utf8 => {
+ regexp_is_match_flag!(left, right, StringArray, not_match, flag)
+ },
+ DataType::Utf8View => {
+ regexp_is_match_flag!(left, right, StringViewArray, not_match,
flag)
+ }
+ DataType::LargeUtf8 => {
+ regexp_is_match_flag!(left, right, LargeStringArray, not_match,
flag)
+ },
+ other => internal_err!(
+ "Data type {} not supported for binary_string_array_flag_op
operation regexp_is_match on string array",
+ other
+ ),
+ }
+}
+
+/// Invoke a compute kernel on a data array and a scalar value with flag
+macro_rules! regexp_is_match_flag_scalar {
+ ($LEFT:expr, $RIGHT:expr, $ARRAYTYPE:ident, $NOT:expr, $FLAG:expr) => {{
+ let ll = $LEFT
+ .as_any()
+ .downcast_ref::<$ARRAYTYPE>()
+ .expect("failed to downcast array");
+
+ let string_value = match $RIGHT.try_as_str() {
+ Some(Some(string_value)) => string_value,
+ // null literal or non string
+ _ => {
+ return Some(internal_err!(
+ "failed to cast literal value {} for operation
'regexp_is_match_scalar'",
+ $RIGHT
+ ))
+ }
+ };
+
+ let flag = $FLAG.then_some("i");
+ match regexp_is_match_scalar(ll, &string_value, flag) {
+ Ok(mut array) => {
+ if $NOT {
+ array = not(&array).unwrap();
+ }
+ Ok(Arc::new(array))
+ }
+ Err(e) => internal_err!("failed to call regexp_is_match_scalar
{}", e),
+ }
+ }};
+}
+
+pub(crate) fn regex_match_dyn_scalar(
+ left: &dyn Array,
+ right: ScalarValue,
+ not_match: bool,
+ flag: bool,
+) -> Option<Result<ArrayRef>> {
+ let result: Result<ArrayRef> = match left.data_type() {
+ DataType::Utf8 => {
+ regexp_is_match_flag_scalar!(left, right, StringArray, not_match,
flag)
+ },
+ DataType::Utf8View => {
+ regexp_is_match_flag_scalar!(left, right, StringViewArray,
not_match, flag)
+ }
+ DataType::LargeUtf8 => {
+ regexp_is_match_flag_scalar!(left, right, LargeStringArray,
not_match, flag)
+ },
+ DataType::Dictionary(_, _) => {
+ let values = left.as_any_dictionary().values();
+
+ match values.data_type() {
+ DataType::Utf8 => regexp_is_match_flag_scalar!(values, right,
StringArray, not_match, flag),
+ DataType::Utf8View => regexp_is_match_flag_scalar!(values,
right, StringViewArray, not_match, flag),
+ DataType::LargeUtf8 => regexp_is_match_flag_scalar!(values,
right, LargeStringArray, not_match, flag),
+ other => internal_err!(
+ "Data type {} not supported as a dictionary value type for
binary_string_array_flag_op_scalar operation 'regexp_is_match_scalar' on string
array",
+ other
+ ),
+ }.map(
+ // downcast_dictionary_array duplicates code per possible key
type, so we aim to do all prep work before
Review Comment:
Yes this patch doesn't have any feature change, it's just some housekeeping
work.
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