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| @@ -0,0 +1,218 @@ | ||
| // Copyright 2023 Greptime Team | ||
| // | ||
| // Licensed 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. | ||
|
|
||
| use std::borrow::Cow; | ||
| use std::fmt::Display; | ||
|
|
||
| use common_query::error::{InvalidFuncArgsSnafu, Result}; | ||
| use common_query::prelude::Signature; | ||
| use datatypes::prelude::ConcreteDataType; | ||
| use datatypes::scalars::ScalarVectorBuilder; | ||
| use datatypes::vectors::{BinaryVectorBuilder, MutableVector, VectorRef}; | ||
| use nalgebra::DVectorView; | ||
| use snafu::ensure; | ||
|
|
||
| use crate::function::{Function, FunctionContext}; | ||
| use crate::helper; | ||
| use crate::scalars::vector::impl_conv::{as_veclit, as_veclit_if_const, veclit_to_binlit}; | ||
|
|
||
| const NAME: &str = "vec_div"; | ||
|
|
||
| /// Divides corresponding elements of two vectors. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ```sql | ||
| /// SELECT vec_to_string(vec_div("[2, 4, 6]", "[2, 2, 2]")) as result; | ||
| /// | ||
| /// +---------+ | ||
| /// | result | | ||
| /// +---------+ | ||
| /// | [1,2,3] | | ||
| /// +---------+ | ||
| /// | ||
| /// ``` | ||
| #[derive(Debug, Clone, Default)] | ||
| pub struct VectorDivFunction; | ||
|
|
||
| impl Function for VectorDivFunction { | ||
| fn name(&self) -> &str { | ||
| NAME | ||
| } | ||
|
|
||
| fn return_type(&self, _input_types: &[ConcreteDataType]) -> Result<ConcreteDataType> { | ||
| Ok(ConcreteDataType::binary_datatype()) | ||
| } | ||
|
|
||
| fn signature(&self) -> Signature { | ||
| helper::one_of_sigs2( | ||
| vec![ | ||
| ConcreteDataType::string_datatype(), | ||
| ConcreteDataType::binary_datatype(), | ||
| ], | ||
| vec![ | ||
| ConcreteDataType::string_datatype(), | ||
| ConcreteDataType::binary_datatype(), | ||
| ], | ||
| ) | ||
| } | ||
|
|
||
| fn eval(&self, _func_ctx: FunctionContext, columns: &[VectorRef]) -> Result<VectorRef> { | ||
| ensure!( | ||
| columns.len() == 2, | ||
| InvalidFuncArgsSnafu { | ||
| err_msg: format!( | ||
| "The length of the args is not correct, expect exactly two, have: {}", | ||
| columns.len() | ||
| ), | ||
| } | ||
| ); | ||
|
|
||
| let arg0 = &columns[0]; | ||
| let arg1 = &columns[1]; | ||
|
|
||
| let len = arg0.len(); | ||
| let mut result = BinaryVectorBuilder::with_capacity(len); | ||
| if len == 0 { | ||
| return Ok(result.to_vector()); | ||
| } | ||
|
|
||
| let arg0_const = as_veclit_if_const(arg0)?; | ||
| let arg1_const = as_veclit_if_const(arg1)?; | ||
|
|
||
| for i in 0..len { | ||
| let arg0 = match arg0_const.as_ref() { | ||
| Some(arg0) => Some(Cow::Borrowed(arg0.as_ref())), | ||
| None => as_veclit(arg0.get_ref(i))?, | ||
| }; | ||
|
|
||
| let arg1 = match arg1_const.as_ref() { | ||
| Some(arg1) => Some(Cow::Borrowed(arg1.as_ref())), | ||
| None => as_veclit(arg1.get_ref(i))?, | ||
| }; | ||
|
|
||
| if let (Some(arg0), Some(arg1)) = (arg0, arg1) { | ||
| ensure!( | ||
| arg0.len() == arg1.len(), | ||
| InvalidFuncArgsSnafu { | ||
| err_msg: format!( | ||
| "The length of the vectors must match for division, have: {} vs {}", | ||
| arg0.len(), | ||
| arg1.len() | ||
| ), | ||
| } | ||
| ); | ||
| let vec0 = DVectorView::from_slice(&arg0, arg0.len()); | ||
| let vec1 = DVectorView::from_slice(&arg1, arg1.len()); | ||
| let vec_res = vec0.component_div(&vec1); | ||
|
|
||
| let veclit = vec_res.as_slice(); | ||
| let binlit = veclit_to_binlit(veclit); | ||
| result.push(Some(&binlit)); | ||
| } else { | ||
| result.push_null(); | ||
| } | ||
| } | ||
|
|
||
| Ok(result.to_vector()) | ||
| } | ||
| } | ||
|
|
||
| impl Display for VectorDivFunction { | ||
| fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { | ||
| write!(f, "{}", NAME.to_ascii_uppercase()) | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod tests { | ||
| use std::sync::Arc; | ||
|
|
||
| use common_query::error; | ||
| use datatypes::vectors::StringVector; | ||
|
|
||
| use super::*; | ||
|
|
||
| #[test] | ||
| fn test_vector_mul() { | ||
| let func = VectorDivFunction; | ||
|
|
||
| let vec0 = vec![1.0, 2.0, 3.0]; | ||
| let vec1 = vec![1.0, 1.0]; | ||
| let (len0, len1) = (vec0.len(), vec1.len()); | ||
| let input0 = Arc::new(StringVector::from(vec![Some(format!("{vec0:?}"))])); | ||
| let input1 = Arc::new(StringVector::from(vec![Some(format!("{vec1:?}"))])); | ||
|
|
||
| let err = func | ||
| .eval(FunctionContext::default(), &[input0, input1]) | ||
| .unwrap_err(); | ||
|
|
||
| match err { | ||
| error::Error::InvalidFuncArgs { err_msg, .. } => { | ||
| assert_eq!( | ||
| err_msg, | ||
| format!( | ||
| "The length of the vectors must match for division, have: {} vs {}", | ||
| len0, len1 | ||
| ) | ||
| ) | ||
| } | ||
| _ => unreachable!(), | ||
| } | ||
|
|
||
| let input0 = Arc::new(StringVector::from(vec![ | ||
| Some("[1.0,2.0,3.0]".to_string()), | ||
| Some("[8.0,10.0,12.0]".to_string()), | ||
| Some("[7.0,8.0,9.0]".to_string()), | ||
| None, | ||
| ])); | ||
|
|
||
| let input1 = Arc::new(StringVector::from(vec![ | ||
| Some("[1.0,1.0,1.0]".to_string()), | ||
| Some("[2.0,2.0,2.0]".to_string()), | ||
| None, | ||
| Some("[3.0,3.0,3.0]".to_string()), | ||
| ])); | ||
|
|
||
| let result = func | ||
| .eval(FunctionContext::default(), &[input0, input1]) | ||
| .unwrap(); | ||
|
|
||
| let result = result.as_ref(); | ||
| assert_eq!(result.len(), 4); | ||
| assert_eq!( | ||
| result.get_ref(0).as_binary().unwrap(), | ||
| Some(veclit_to_binlit(&[1.0, 2.0, 3.0]).as_slice()) | ||
| ); | ||
| assert_eq!( | ||
| result.get_ref(1).as_binary().unwrap(), | ||
| Some(veclit_to_binlit(&[4.0, 5.0, 6.0]).as_slice()) | ||
| ); | ||
| assert!(result.get_ref(2).is_null()); | ||
| assert!(result.get_ref(3).is_null()); | ||
|
|
||
| let input0 = Arc::new(StringVector::from(vec![Some("[1.0,-2.0]".to_string())])); | ||
| let input1 = Arc::new(StringVector::from(vec![Some("[0.0,0.0]".to_string())])); | ||
|
|
||
| let result = func | ||
| .eval(FunctionContext::default(), &[input0, input1]) | ||
| .unwrap(); | ||
|
|
||
| let result = result.as_ref(); | ||
| assert_eq!( | ||
| result.get_ref(0).as_binary().unwrap(), | ||
| Some(veclit_to_binlit(&[f64::INFINITY as f32, f64::NEG_INFINITY as f32]).as_slice()) | ||
| ); | ||
| } | ||
| } |
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