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move the Translate, SubstrIndex, FindInSet functions to datafusion-fu…
…nctions (#9864) * Fix to_timestamp benchmark * Remove reference to simd and nightly build as simd is no longer an available feature in DataFusion and building with nightly may not be a good recommendation when getting started. * Fixed missing trim() function. * Create unicode module in datafusion/functions/src/unicode and unicode_expressions feature flag, move char_length function * move Left, Lpad, Reverse, Right, Rpad functions to datafusion_functions * move strpos, substr functions to datafusion_functions * move the Translate, SubstrIndex, FindInSet functions to new datafusion-functions crate * Test code cleanup * unicode_expressions Cargo.toml updates. --------- Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>
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| // 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. | ||
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| use std::any::Any; | ||
| use std::sync::Arc; | ||
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| use arrow::array::{ | ||
| ArrayRef, ArrowPrimitiveType, GenericStringArray, OffsetSizeTrait, PrimitiveArray, | ||
| }; | ||
| use arrow::datatypes::{ArrowNativeType, DataType, Int32Type, Int64Type}; | ||
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|
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| use datafusion_common::cast::as_generic_string_array; | ||
| use datafusion_common::{exec_err, Result}; | ||
| use datafusion_expr::TypeSignature::Exact; | ||
| use datafusion_expr::{ColumnarValue, ScalarUDFImpl, Signature, Volatility}; | ||
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| use crate::utils::{make_scalar_function, utf8_to_int_type}; | ||
|
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| #[derive(Debug)] | ||
| pub(super) struct FindInSetFunc { | ||
| signature: Signature, | ||
| } | ||
|
|
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| impl FindInSetFunc { | ||
| pub fn new() -> Self { | ||
| use DataType::*; | ||
| Self { | ||
| signature: Signature::one_of( | ||
| vec![Exact(vec![Utf8, Utf8]), Exact(vec![LargeUtf8, LargeUtf8])], | ||
| Volatility::Immutable, | ||
| ), | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl ScalarUDFImpl for FindInSetFunc { | ||
| fn as_any(&self) -> &dyn Any { | ||
| self | ||
| } | ||
|
|
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| fn name(&self) -> &str { | ||
| "find_in_set" | ||
| } | ||
|
|
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| fn signature(&self) -> &Signature { | ||
| &self.signature | ||
| } | ||
|
|
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| fn return_type(&self, arg_types: &[DataType]) -> Result<DataType> { | ||
| utf8_to_int_type(&arg_types[0], "find_in_set") | ||
| } | ||
|
|
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| fn invoke(&self, args: &[ColumnarValue]) -> Result<ColumnarValue> { | ||
| match args[0].data_type() { | ||
| DataType::Utf8 => { | ||
| make_scalar_function(find_in_set::<Int32Type>, vec![])(args) | ||
| } | ||
| DataType::LargeUtf8 => { | ||
| make_scalar_function(find_in_set::<Int64Type>, vec![])(args) | ||
| } | ||
| other => { | ||
| exec_err!("Unsupported data type {other:?} for function find_in_set") | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| ///Returns a value in the range of 1 to N if the string str is in the string list strlist consisting of N substrings | ||
| ///A string list is a string composed of substrings separated by , characters. | ||
| pub fn find_in_set<T: ArrowPrimitiveType>(args: &[ArrayRef]) -> Result<ArrayRef> | ||
| where | ||
| T::Native: OffsetSizeTrait, | ||
| { | ||
| if args.len() != 2 { | ||
| return exec_err!( | ||
| "find_in_set was called with {} arguments. It requires 2.", | ||
| args.len() | ||
| ); | ||
| } | ||
|
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| let str_array: &GenericStringArray<T::Native> = | ||
| as_generic_string_array::<T::Native>(&args[0])?; | ||
| let str_list_array: &GenericStringArray<T::Native> = | ||
| as_generic_string_array::<T::Native>(&args[1])?; | ||
|
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||
| let result = str_array | ||
| .iter() | ||
| .zip(str_list_array.iter()) | ||
| .map(|(string, str_list)| match (string, str_list) { | ||
| (Some(string), Some(str_list)) => { | ||
| let mut res = 0; | ||
| let str_set: Vec<&str> = str_list.split(',').collect(); | ||
| for (idx, str) in str_set.iter().enumerate() { | ||
| if str == &string { | ||
| res = idx + 1; | ||
| break; | ||
| } | ||
| } | ||
| T::Native::from_usize(res) | ||
| } | ||
| _ => None, | ||
| }) | ||
| .collect::<PrimitiveArray<T>>(); | ||
| Ok(Arc::new(result) as ArrayRef) | ||
| } |
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