vortex-array 0.68.0

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
28
29
30
31
32
33
34
35
36
37
38

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

use vortex_error::VortexResult;
use vortex_error::vortex_bail;

use crate::ExecutionCtx;
use crate::array::ArrayView;
use crate::array::VTable;
use crate::scalar::Scalar;
use crate::vtable::NotSupported;

pub trait OperationsVTable<V: VTable> {
    /// Fetch the scalar at the given index.
    ///
    /// ## Preconditions
    ///
    /// Bounds-checking has already been performed by the time this function is called,
    /// and the index is guaranteed to be non-null.
    fn scalar_at(
        array: ArrayView<'_, V>,
        index: usize,
        ctx: &mut ExecutionCtx,
    ) -> VortexResult<Scalar>;
}

impl<V: VTable> OperationsVTable<V> for NotSupported {
    fn scalar_at(
        array: ArrayView<'_, V>,
        _index: usize,
        _ctx: &mut ExecutionCtx,
    ) -> VortexResult<Scalar> {
        vortex_bail!(
            "Legacy scalar_at operation is not supported for {} arrays",
            array.encoding_id()
        )
    }
}