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

vortex_alp/alp_rd/compute/
mask.rs
