alamb commented on code in PR #10497: URL: https://github.com/apache/datafusion/pull/10497#discussion_r1599867014
########## datafusion/functions-array/src/udf.rs: ########## @@ -1,688 +0,0 @@ -// Licensed to the Apache Software Foundation (ASF) under one -// or more contributor license agreements. See the NOTICE file -// distributed with this work for additional information -// regarding copyright ownership. The ASF licenses this file -// to you under the Apache License, Version 2.0 (the -// "License"); you may not use this file except in compliance -// with the License. You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, -// software distributed under the License is distributed on an -// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY -// KIND, either express or implied. See the License for the -// specific language governing permissions and limitations -// under the License. - -//! [`ScalarUDFImpl`] definitions for array functions. - -use arrow::array::{NullArray, StringArray}; -use arrow::datatypes::DataType; -use arrow::datatypes::Field; -use arrow::datatypes::IntervalUnit::MonthDayNano; -use arrow_schema::DataType::{LargeUtf8, List, Utf8}; -use datafusion_common::exec_err; -use datafusion_common::plan_err; -use datafusion_common::Result; -use datafusion_expr::expr::ScalarFunction; -use datafusion_expr::Expr; -use datafusion_expr::TypeSignature; -use datafusion_expr::{ColumnarValue, ScalarUDFImpl, Signature, Volatility}; -use std::any::Any; -use std::sync::Arc; - -// Create static instances of ScalarUDFs for each function -make_udf_function!(ArrayToString, Review Comment: Here is the other copy: https://github.com/apache/datafusion/blob/cd36ee3b305dc4e50b9a5feb8ea88199ae17527a/datafusion/functions-array/src/string.rs#L113-L132 ########## datafusion/functions-array/src/udf.rs: ########## @@ -1,688 +0,0 @@ -// Licensed to the Apache Software Foundation (ASF) under one -// or more contributor license agreements. See the NOTICE file -// distributed with this work for additional information -// regarding copyright ownership. The ASF licenses this file -// to you under the Apache License, Version 2.0 (the -// "License"); you may not use this file except in compliance -// with the License. You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, -// software distributed under the License is distributed on an -// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY -// KIND, either express or implied. See the License for the -// specific language governing permissions and limitations -// under the License. - -//! [`ScalarUDFImpl`] definitions for array functions. - -use arrow::array::{NullArray, StringArray}; -use arrow::datatypes::DataType; -use arrow::datatypes::Field; -use arrow::datatypes::IntervalUnit::MonthDayNano; -use arrow_schema::DataType::{LargeUtf8, List, Utf8}; -use datafusion_common::exec_err; -use datafusion_common::plan_err; -use datafusion_common::Result; -use datafusion_expr::expr::ScalarFunction; -use datafusion_expr::Expr; -use datafusion_expr::TypeSignature; -use datafusion_expr::{ColumnarValue, ScalarUDFImpl, Signature, Volatility}; -use std::any::Any; -use std::sync::Arc; - -// Create static instances of ScalarUDFs for each function -make_udf_function!(ArrayToString, - array_to_string, - array delimiter, // arg name - "converts each element to its text representation.", // doc - array_to_string_udf // internal function name -); -#[derive(Debug)] -pub struct ArrayToString { - signature: Signature, - aliases: Vec<String>, -} - -impl ArrayToString { - pub fn new() -> Self { - Self { - signature: Signature::variadic_any(Volatility::Immutable), - aliases: vec![ - String::from("array_to_string"), - String::from("list_to_string"), - String::from("array_join"), - String::from("list_join"), - ], - } - } -} - -impl ScalarUDFImpl for ArrayToString { - fn as_any(&self) -> &dyn Any { - self - } - fn name(&self) -> &str { - "array_to_string" - } - - fn signature(&self) -> &Signature { - &self.signature - } - - fn return_type(&self, arg_types: &[DataType]) -> Result<DataType> { - use DataType::*; - Ok(match arg_types[0] { - List(_) | LargeList(_) | FixedSizeList(_, _) => Utf8, - _ => { - return plan_err!("The array_to_string function can only accept List/LargeList/FixedSizeList."); - } - }) - } - - fn invoke(&self, args: &[ColumnarValue]) -> Result<ColumnarValue> { - let args = ColumnarValue::values_to_arrays(args)?; - crate::kernels::array_to_string(&args).map(ColumnarValue::Array) - } - - fn aliases(&self) -> &[String] { - &self.aliases - } -} - -make_udf_function!(StringToArray, - string_to_array, - string delimiter null_string, // arg name - "splits a `string` based on a `delimiter` and returns an array of parts. Any parts matching the optional `null_string` will be replaced with `NULL`", // doc - string_to_array_udf // internal function name -); -#[derive(Debug)] -pub struct StringToArray { - signature: Signature, - aliases: Vec<String>, -} - -impl StringToArray { - pub fn new() -> Self { - Self { - signature: Signature::variadic_any(Volatility::Immutable), - aliases: vec![ - String::from("string_to_array"), - String::from("string_to_list"), - ], - } - } -} - -impl ScalarUDFImpl for StringToArray { - fn as_any(&self) -> &dyn Any { - self - } - fn name(&self) -> &str { - "string_to_array" - } - - fn signature(&self) -> &Signature { - &self.signature - } - - fn return_type(&self, arg_types: &[DataType]) -> Result<DataType> { - use DataType::*; - Ok(match arg_types[0] { - Utf8 | LargeUtf8 => { - List(Arc::new(Field::new("item", arg_types[0].clone(), true))) - } - _ => { - return plan_err!( - "The string_to_array function can only accept Utf8 or LargeUtf8." - ); - } - }) - } - - fn invoke(&self, args: &[ColumnarValue]) -> Result<ColumnarValue> { - let mut args = ColumnarValue::values_to_arrays(args)?; - // Case: delimiter is NULL, needs to be handled as well. - if args[1].as_any().is::<NullArray>() { - args[1] = Arc::new(StringArray::new_null(args[1].len())); - }; - - match args[0].data_type() { - Utf8 => { - crate::kernels::string_to_array::<i32>(&args).map(ColumnarValue::Array) - } - LargeUtf8 => { - crate::kernels::string_to_array::<i64>(&args).map(ColumnarValue::Array) - } - other => { - exec_err!("unsupported type for string_to_array function as {other}") - } - } - } - - fn aliases(&self) -> &[String] { - &self.aliases - } -} - -make_udf_function!( Review Comment: Here is the current copy of the code https://github.com/apache/datafusion/blob/cd36ee3b305dc4e50b9a5feb8ea88199ae17527a/datafusion/functions-array/src/dimension.rs#L45-L50 -- This is an automated message from the Apache Git Service. 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