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feat(vector): add vector functions
vec_sub
& vec_sum
& `vec_elem_…
…sum` (#5230) * feat(vector): add sub function * chore: added check for vector length misalignment * feat(vector): add `vec_sum` & `vec_elem_sum` * chore: codefmt * update lock file Signed-off-by: Ruihang Xia <[email protected]> --------- Signed-off-by: Ruihang Xia <[email protected]> Co-authored-by: Ruihang Xia <[email protected]>
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// 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. | ||
|
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use std::borrow::Cow; | ||
use std::fmt::Display; | ||
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use common_query::error::InvalidFuncArgsSnafu; | ||
use common_query::prelude::{Signature, TypeSignature, Volatility}; | ||
use datatypes::prelude::ConcreteDataType; | ||
use datatypes::scalars::ScalarVectorBuilder; | ||
use datatypes::vectors::{Float32VectorBuilder, MutableVector, VectorRef}; | ||
use nalgebra::DVectorView; | ||
use snafu::ensure; | ||
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use crate::function::{Function, FunctionContext}; | ||
use crate::scalars::vector::impl_conv::{as_veclit, as_veclit_if_const}; | ||
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const NAME: &str = "vec_elem_sum"; | ||
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#[derive(Debug, Clone, Default)] | ||
pub struct ElemSumFunction; | ||
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impl Function for ElemSumFunction { | ||
fn name(&self) -> &str { | ||
NAME | ||
} | ||
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fn return_type( | ||
&self, | ||
_input_types: &[ConcreteDataType], | ||
) -> common_query::error::Result<ConcreteDataType> { | ||
Ok(ConcreteDataType::float32_datatype()) | ||
} | ||
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fn signature(&self) -> Signature { | ||
Signature::one_of( | ||
vec![ | ||
TypeSignature::Exact(vec![ConcreteDataType::string_datatype()]), | ||
TypeSignature::Exact(vec![ConcreteDataType::binary_datatype()]), | ||
], | ||
Volatility::Immutable, | ||
) | ||
} | ||
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fn eval( | ||
&self, | ||
_func_ctx: FunctionContext, | ||
columns: &[VectorRef], | ||
) -> common_query::error::Result<VectorRef> { | ||
ensure!( | ||
columns.len() == 1, | ||
InvalidFuncArgsSnafu { | ||
err_msg: format!( | ||
"The length of the args is not correct, expect exactly one, have: {}", | ||
columns.len() | ||
) | ||
} | ||
); | ||
let arg0 = &columns[0]; | ||
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let len = arg0.len(); | ||
let mut result = Float32VectorBuilder::with_capacity(len); | ||
if len == 0 { | ||
return Ok(result.to_vector()); | ||
} | ||
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let arg0_const = as_veclit_if_const(arg0)?; | ||
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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 Some(arg0) = arg0 else { | ||
result.push_null(); | ||
continue; | ||
}; | ||
result.push(Some(DVectorView::from_slice(&arg0, arg0.len()).sum())); | ||
} | ||
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Ok(result.to_vector()) | ||
} | ||
} | ||
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impl Display for ElemSumFunction { | ||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { | ||
write!(f, "{}", NAME.to_ascii_uppercase()) | ||
} | ||
} | ||
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#[cfg(test)] | ||
mod tests { | ||
use std::sync::Arc; | ||
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use datatypes::vectors::StringVector; | ||
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use super::*; | ||
use crate::function::FunctionContext; | ||
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#[test] | ||
fn test_elem_sum() { | ||
let func = ElemSumFunction; | ||
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let input0 = Arc::new(StringVector::from(vec![ | ||
Some("[1.0,2.0,3.0]".to_string()), | ||
Some("[4.0,5.0,6.0]".to_string()), | ||
None, | ||
])); | ||
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let result = func.eval(FunctionContext::default(), &[input0]).unwrap(); | ||
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let result = result.as_ref(); | ||
assert_eq!(result.len(), 3); | ||
assert_eq!(result.get_ref(0).as_f32().unwrap(), Some(6.0)); | ||
assert_eq!(result.get_ref(1).as_f32().unwrap(), Some(15.0)); | ||
assert_eq!(result.get_ref(2).as_f32().unwrap(), None); | ||
} | ||
} |
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