goldmedal commented on code in PR #10917:
URL: https://github.com/apache/datafusion/pull/10917#discussion_r1641808587
##########
datafusion/functions-aggregate/src/approx_percentile_cont_with_weight.rs:
##########
@@ -15,91 +15,139 @@
// specific language governing permissions and limitations
// under the License.
-use crate::expressions::ApproxPercentileCont;
-use crate::{AggregateExpr, PhysicalExpr};
+use std::any::Any;
+use std::fmt::{Debug, Formatter};
+
use arrow::{
array::ArrayRef,
datatypes::{DataType, Field},
};
-use
datafusion_functions_aggregate::approx_percentile_cont::ApproxPercentileAccumulator;
+
+use datafusion_common::ScalarValue;
+use datafusion_common::{not_impl_err, plan_err, Result};
+use datafusion_expr::function::{AccumulatorArgs, StateFieldsArgs};
+use datafusion_expr::type_coercion::aggregates::NUMERICS;
+use datafusion_expr::{
+ Accumulator, AggregateUDFImpl, Signature, TypeSignature, Volatility,
+};
use datafusion_physical_expr_common::aggregate::tdigest::{
Centroid, TDigest, DEFAULT_MAX_SIZE,
};
+use datafusion_physical_expr_common::physical_expr::down_cast_any_ref;
-use datafusion_common::Result;
-use datafusion_common::ScalarValue;
-use datafusion_expr::Accumulator;
+use crate::approx_percentile_cont::{ApproxPercentileAccumulator,
ApproxPercentileCont};
-use crate::aggregate::utils::down_cast_any_ref;
-use std::{any::Any, sync::Arc};
+make_udaf_expr_and_func!(
+ ApproxPercentileContWithWeight,
+ approx_percentile_cont_with_weight,
+ expression weight percentile,
+ "Computes the approximate percentile continuous with weight of a set of
numbers",
+ approx_percentile_cont_with_weight_udaf
+);
/// APPROX_PERCENTILE_CONT_WITH_WEIGTH aggregate expression
-#[derive(Debug)]
pub struct ApproxPercentileContWithWeight {
+ signature: Signature,
approx_percentile_cont: ApproxPercentileCont,
- column_expr: Arc<dyn PhysicalExpr>,
- weight_expr: Arc<dyn PhysicalExpr>,
- percentile_expr: Arc<dyn PhysicalExpr>,
+}
+
+impl Debug for ApproxPercentileContWithWeight {
+ fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+ f.debug_struct("ApproxPercentileContWithWeight")
+ .field("signature", &self.signature)
+ .finish()
+ }
+}
+
+impl Default for ApproxPercentileContWithWeight {
+ fn default() -> Self {
+ Self::new()
+ }
}
impl ApproxPercentileContWithWeight {
/// Create a new [`ApproxPercentileContWithWeight`] aggregate function.
- pub fn new(
- expr: Vec<Arc<dyn PhysicalExpr>>,
- name: impl Into<String>,
- return_type: DataType,
- ) -> Result<Self> {
- // Arguments should be [ColumnExpr, WeightExpr,
DesiredPercentileLiteral]
- debug_assert_eq!(expr.len(), 3);
-
- let sub_expr = vec![expr[0].clone(), expr[2].clone()];
- let approx_percentile_cont =
- ApproxPercentileCont::new(sub_expr, name, return_type)?;
-
- Ok(Self {
- approx_percentile_cont,
- column_expr: expr[0].clone(),
- weight_expr: expr[1].clone(),
- percentile_expr: expr[2].clone(),
- })
+ pub fn new() -> Self {
+ Self {
+ signature: Signature::one_of(
Review Comment:
Same as
https://github.com/apache/datafusion/pull/10917#discussion_r1641808518
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