vortex-array 0.62.0

Vortex in memory columnar data format
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27

// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: Copyright the Vortex contributors

use vortex_error::VortexResult;

use crate::ArrayRef;
use crate::IntoArray;
use crate::arrays::DictArray;
use crate::arrays::DictVTable;
use crate::arrays::scalar_fn::ScalarFnArrayExt;
use crate::scalar_fn::EmptyOptions;
use crate::scalar_fn::fns::mask::Mask as MaskExpr;
use crate::scalar_fn::fns::mask::MaskReduce;

impl MaskReduce for DictVTable {
    fn mask(array: &DictArray, mask: &ArrayRef) -> VortexResult<Option<ArrayRef>> {
        let masked_codes = MaskExpr.try_new_array(
            array.codes().len(),
            EmptyOptions,
            [array.codes().clone(), mask.clone()],
        )?;
        // SAFETY: masking codes doesn't change dict invariants
        Ok(Some(unsafe {
            DictArray::new_unchecked(masked_codes, array.values().clone()).into_array()
        }))
    }
}