vortex_alp/alp_rd/compute/
mask.rs

1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: Copyright the Vortex contributors
3
4use vortex_array::ArrayRef;
5use vortex_array::ArrayView;
6use vortex_array::IntoArray;
7use vortex_array::scalar_fn::fns::mask::Mask as MaskExpr;
8use vortex_array::scalar_fn::fns::mask::MaskReduce;
9use vortex_error::VortexResult;
10
11use crate::ALPRD;
12use crate::ALPRDArrayExt;
13use crate::ALPRDArraySlotsExt;
14
15impl MaskReduce for ALPRD {
16    #[allow(clippy::disallowed_methods)]
17    fn mask(array: ArrayView<'_, Self>, mask: &ArrayRef) -> VortexResult<Option<ArrayRef>> {
18        let masked_left_parts =
19            MaskExpr::try_new(array.left_parts().clone(), mask.clone())?.into_array();
20        Ok(Some(
21            ALPRD::try_new(
22                array.dtype().as_nullable(),
23                masked_left_parts,
24                array.left_parts_dictionary().clone(),
25                array.right_parts().clone(),
26                array.right_bit_width(),
27                array.left_parts_patches(),
28            )?
29            .into_array(),
30        ))
31    }
32}
33
34#[cfg(test)]
35mod tests {
36    use std::sync::LazyLock;
37
38    use rstest::rstest;
39    use vortex_array::IntoArray;
40    use vortex_array::VortexSessionExecute;
41    use vortex_array::array_session;
42    use vortex_array::arrays::PrimitiveArray;
43    use vortex_array::compute::conformance::mask::test_mask_conformance;
44    use vortex_array::dtype::NativePType;
45    use vortex_session::VortexSession;
46
47    use crate::ALPRDFloat;
48    use crate::RDEncoder;
49    use crate::RDEncoderExt;
50
51    static SESSION: LazyLock<VortexSession> = LazyLock::new(|| {
52        let session = array_session();
53        crate::initialize(&session);
54        session
55    });
56
57    #[rstest]
58    #[case(0.1f32, 0.2f32, 3e25f32)]
59    #[case(0.1f64, 0.2f64, 3e100f64)]
60    fn test_mask_simple<T: ALPRDFloat + NativePType>(
61        #[case] a: T,
62        #[case] b: T,
63        #[case] outlier: T,
64    ) {
65        let mut ctx = SESSION.create_execution_ctx();
66        test_mask_conformance(
67            &RDEncoder::new(&[a, b])
68                .encode(PrimitiveArray::from_iter([a, b, outlier, b, outlier]).as_view())
69                .into_array(),
70            &mut ctx,
71        );
72    }
73
74    #[rstest]
75    #[case(0.1f32, 3e25f32)]
76    #[case(0.5f64, 1e100f64)]
77    fn test_mask_with_nulls<T: ALPRDFloat + NativePType>(#[case] a: T, #[case] outlier: T) {
78        let mut ctx = SESSION.create_execution_ctx();
79        test_mask_conformance(
80            &RDEncoder::new(&[a])
81                .encode(
82                    PrimitiveArray::from_option_iter([Some(a), None, Some(outlier), Some(a), None])
83                        .as_view(),
84                )
85                .into_array(),
86            &mut ctx,
87        );
88    }
89}
vortex_alp/alp_rd/compute/mask.rs

vortex_alp/alp_rd/compute/
mask.rs
