viirya commented on code in PR #1122:
URL: https://github.com/apache/datafusion-comet/pull/1122#discussion_r1859195781
##########
native/spark-expr/src/list.rs:
##########
@@ -708,6 +708,91 @@ impl PartialEq<dyn Any> for ArrayInsert {
}
}
+#[derive(Debug, Hash)]
+pub struct ArraySize {
+ src_array_expr: Arc<dyn PhysicalExpr>,
+}
+
+impl ArraySize {
+ pub fn new(src_array_expr: Arc<dyn PhysicalExpr>) -> Self {
+ Self { src_array_expr }
+ }
+}
+
+impl Display for ArraySize {
+ fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+ write!(f, "ArraySize [array: {:?}]", self.src_array_expr)
+ }
+}
+
+impl PartialEq<dyn Any> for ArraySize {
+ fn eq(&self, other: &dyn Any) -> bool {
+ down_cast_any_ref(other)
+ .downcast_ref::<Self>()
+ .map(|x| self.src_array_expr.eq(&x.src_array_expr))
+ .unwrap_or(false)
+ }
+}
+
+impl PhysicalExpr for ArraySize {
+ fn as_any(&self) -> &dyn Any {
+ self
+ }
+
+ fn data_type(&self, _input_schema: &Schema) -> DataFusionResult<DataType> {
+ Ok(DataType::Int32)
+ }
+
+ fn nullable(&self, input_schema: &Schema) -> DataFusionResult<bool> {
+ self.src_array_expr.nullable(input_schema)
+ }
+
+ fn evaluate(&self, batch: &RecordBatch) -> DataFusionResult<ColumnarValue>
{
+ let array_value = self
+ .src_array_expr
+ .evaluate(batch)?
+ .into_array(batch.num_rows())?;
+ match array_value.data_type() {
+ DataType::List(_) => {
+ let list_array = as_list_array(&array_value)?;
+ let mut builder = Int32Array::builder(list_array.len());
+ for i in 0..list_array.len() {
+ if list_array.is_null(i) {
+ builder.append_null();
+ } else {
+ builder.append_value(list_array.value_length(i));
+ }
+ }
+ let sizes_array = Int32Array::from(builder.finish());
+ Ok(ColumnarValue::Array(Arc::new(sizes_array)))
+ }
+ _ => Err(DataFusionError::Internal(format!(
+ "Unexpected data type in ArraySize: {:?}",
+ array_value.data_type()
+ ))),
+ }
+ }
+
+ fn children(&self) -> Vec<&Arc<dyn PhysicalExpr>> {
+ vec![&self.src_array_expr]
+ }
+ fn with_new_children(
+ self: Arc<Self>,
+ children: Vec<Arc<dyn PhysicalExpr>>,
+ ) -> datafusion_common::Result<Arc<dyn PhysicalExpr>> {
+ match children.len() {
+ 1 => Ok(Arc::new(ArraySize::new(Arc::clone(&children[0])))),
+ _ => internal_err!("ListExtract should have exactly two children"),
Review Comment:
```suggestion
_ => internal_err!("ArraySize should have exactly one children"),
```
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