tustvold commented on code in PR #5040:
URL: https://github.com/apache/arrow-rs/pull/5040#discussion_r1383029415
##########
arrow-cast/src/cast.rs:
##########
@@ -1621,24 +1621,104 @@ pub fn cast_with_options(
.unary::<_, Time64MicrosecondType>(|x| x / (NANOSECONDS /
MICROSECONDS)),
)),
- (Timestamp(TimeUnit::Second, _), Int64) => {
- cast_reinterpret_arrays::<TimestampSecondType, Int64Type>(array)
+ (Timestamp(TimeUnit::Second, _), _) if to_type.is_integer() => {
+ let array = cast_reinterpret_arrays::<TimestampSecondType,
Int64Type>(array)?;
+
+ match to_type {
+ Int8 => cast_numeric_arrays::<Int64Type, Int8Type>(&array,
cast_options),
+ Int16 => cast_numeric_arrays::<Int64Type, Int16Type>(&array,
cast_options),
+ Int32 => cast_numeric_arrays::<Int64Type, Int32Type>(&array,
cast_options),
+ Int64 => Ok(array),
+ UInt8 => cast_numeric_arrays::<Int64Type, UInt8Type>(&array,
cast_options),
+ UInt16 => cast_numeric_arrays::<Int64Type, UInt16Type>(&array,
cast_options),
+ UInt32 => cast_numeric_arrays::<Int64Type, UInt32Type>(&array,
cast_options),
+ UInt64 => cast_numeric_arrays::<Int64Type, UInt64Type>(&array,
cast_options),
+ _ => Err(ArrowError::CastError(format!(
+ "Casting from {:?} to {:?} not supported",
+ from_type, to_type
+ ))),
+ }
}
- (Timestamp(TimeUnit::Millisecond, _), Int64) => {
- cast_reinterpret_arrays::<TimestampMillisecondType,
Int64Type>(array)
+ (Timestamp(TimeUnit::Millisecond, _), _) if to_type.is_integer() => {
+ let array = cast_reinterpret_arrays::<TimestampMillisecondType,
Int64Type>(array)?;
+
+ match to_type {
+ Int8 => cast_numeric_arrays::<Int64Type, Int8Type>(&array,
cast_options),
+ Int16 => cast_numeric_arrays::<Int64Type, Int16Type>(&array,
cast_options),
+ Int32 => cast_numeric_arrays::<Int64Type, Int32Type>(&array,
cast_options),
+ Int64 => Ok(array),
+ UInt8 => cast_numeric_arrays::<Int64Type, UInt8Type>(&array,
cast_options),
+ UInt16 => cast_numeric_arrays::<Int64Type, UInt16Type>(&array,
cast_options),
+ UInt32 => cast_numeric_arrays::<Int64Type, UInt32Type>(&array,
cast_options),
+ UInt64 => cast_numeric_arrays::<Int64Type, UInt64Type>(&array,
cast_options),
+ _ => Err(ArrowError::CastError(format!(
+ "Casting from {:?} to {:?} not supported",
+ from_type, to_type
+ ))),
+ }
}
- (Timestamp(TimeUnit::Microsecond, _), Int64) => {
- cast_reinterpret_arrays::<TimestampMicrosecondType,
Int64Type>(array)
+ (Timestamp(TimeUnit::Microsecond, _), _) if to_type.is_integer() => {
+ let array = cast_reinterpret_arrays::<TimestampMicrosecondType,
Int64Type>(array)?;
+
+ match to_type {
Review Comment:
I wonder if instead of this additional match block we could call the kernels
recursively?
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