tustvold commented on code in PR #3046:
URL: https://github.com/apache/arrow-rs/pull/3046#discussion_r1017721822
##########
arrow/src/compute/kernels/temporal.rs:
##########
@@ -362,45 +368,52 @@ where
T: ArrowTemporalType + ArrowNumericType,
i64: From<T::Native>,
{
- month_generic::<T, _>(array)
+ month_internal(array)
}
-/// Extracts the month of a given temporal array as an array of integers
-pub fn month_generic<T, A: ArrayAccessor<Item = T::Native>>(
- array: A,
-) -> Result<Int32Array>
-where
- T: ArrowTemporalType + ArrowNumericType,
- i64: From<T::Native>,
-{
+/// Extracts the month of a given temporal array as an array of integers.
+/// If the given array isn't temporal primitive or dictionary array,
+/// an `Err` will be returned.
+pub fn month_dyn(array: &dyn Array) -> Result<ArrayRef> {
match array.data_type().clone() {
- DataType::Dictionary(_, value_type) => {
- month_internal::<T, A>(array, value_type.as_ref())
+ DataType::Dictionary(_, _) => {
+ downcast_dictionary_array!(
+ array => {
+ let month_values = month_dyn(array.values())?;
+ Ok(Arc::new(array.with_values(&month_values)))
+ }
+ dt => return_compute_error_with!("month does not support", dt),
+ )
+ }
+ _ => {
+ downcast_temporal_array!(
+ array => {
+ month_internal(array)
+ .map(|a| Arc::new(a) as ArrayRef)
+ }
+ dt => return_compute_error_with!("month does not support", dt),
+ )
}
- dt => month_internal::<T, A>(array, &dt),
}
}
/// Extracts the month of a given temporal array as an array of integers
-fn month_internal<T, A: ArrayAccessor<Item = T::Native>>(
- array: A,
- dt: &DataType,
-) -> Result<Int32Array>
+fn month_internal<T>(array: &PrimitiveArray<T>) -> Result<Int32Array>
Review Comment:
It occurs to me that these `_internal` methods are no longer necessary as
they now have the same signature as the non `_internal` methods
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