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::LEGACY_SESSION;
8use vortex_array::VortexSessionExecute;
9use vortex_array::arrays::scalar_fn::ScalarFnFactoryExt;
10use vortex_array::scalar_fn::EmptyOptions;
11use vortex_array::scalar_fn::fns::mask::Mask as MaskExpr;
12use vortex_array::scalar_fn::fns::mask::MaskReduce;
13use vortex_error::VortexResult;
14
15use crate::ALPRD;
16use crate::ALPRDArrayExt;
17
18impl MaskReduce for ALPRD {
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        // NOTE: `MaskReduce::mask` has a fixed trait signature without `ExecutionCtx`, so we
26        // construct a legacy ctx locally at this trait boundary.
27        Ok(Some(
28            ALPRD::try_new(
29                array.dtype().as_nullable(),
30                masked_left_parts,
31                array.left_parts_dictionary().clone(),
32                array.right_parts().clone(),
33                array.right_bit_width(),
34                array.left_parts_patches(),
35                &mut LEGACY_SESSION.create_execution_ctx(),
36            )?
37            .into_array(),
38        ))
39    }
40}
41
42#[cfg(test)]
43mod tests {
44    use rstest::rstest;
45    use vortex_array::IntoArray;
46    use vortex_array::LEGACY_SESSION;
47    use vortex_array::VortexSessionExecute;
48    use vortex_array::arrays::PrimitiveArray;
49    use vortex_array::compute::conformance::mask::test_mask_conformance;
50
51    use crate::ALPRDFloat;
52    use crate::RDEncoder;
53
54    #[rstest]
55    #[case(0.1f32, 0.2f32, 3e25f32)]
56    #[case(0.1f64, 0.2f64, 3e100f64)]
57    fn test_mask_simple<T: ALPRDFloat>(#[case] a: T, #[case] b: T, #[case] outlier: T) {
58        let mut ctx = LEGACY_SESSION.create_execution_ctx();
59        test_mask_conformance(
60            &RDEncoder::new(&[a, b])
61                .encode(
62                    PrimitiveArray::from_iter([a, b, outlier, b, outlier]).as_view(),
63                    &mut ctx,
64                )
65                .into_array(),
66        );
67    }
68
69    #[rstest]
70    #[case(0.1f32, 3e25f32)]
71    #[case(0.5f64, 1e100f64)]
72    fn test_mask_with_nulls<T: ALPRDFloat>(#[case] a: T, #[case] outlier: T) {
73        let mut ctx = LEGACY_SESSION.create_execution_ctx();
74        test_mask_conformance(
75            &RDEncoder::new(&[a])
76                .encode(
77                    PrimitiveArray::from_option_iter([Some(a), None, Some(outlier), Some(a), None])
78                        .as_view(),
79                    &mut ctx,
80                )
81                .into_array(),
82        );
83    }
84}
vortex_alp/alp_rd/compute/mask.rs

vortex_alp/alp_rd/compute/
mask.rs
