parthchandra commented on code in PR #2490:
URL: https://github.com/apache/datafusion-comet/pull/2490#discussion_r2393054549
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native/spark-expr/src/conversion_funcs/cast.rs:
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@@ -1528,6 +1529,32 @@ where
Ok(Arc::new(output_array))
}
+fn spark_cast_decimal_to_boolean(
+ array: &dyn Array,
+ from_type: &DataType,
+ to_type: &DataType,
+) -> SparkResult<ArrayRef> {
+ match (from_type, to_type) {
+ (DataType::Decimal128(_p, _s), DataType::Boolean) => {
+ let decimal_array = array.as_primitive::<Decimal128Type>();
+ let mut result =
BooleanBuilder::with_capacity(decimal_array.len());
+ for i in 0..decimal_array.len() {
+ if decimal_array.is_null(i) {
+ result.append_null()
+ } else if decimal_array.value(i).is_zero() {
+ result.append_value(false);
+ } else {
+ result.append_value(true);
+ }
+ }
+ Ok(Arc::new(result.finish()))
+ }
+ _ => panic!(
+ "{}",
Review Comment:
> wanted to implement it in a similar fashion as `unreachable!` macro
Since this already returns a Result, maybe you can just return an Err.
```
return { Err(SparkError::Internal(msg)) }
```
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