vortex-data / vortex / 16935267080

// SPDX-License-Identifier: Apache-2.0

// SPDX-FileCopyrightText: Copyright the Vortex contributors

use vortex_error::VortexResult;

use crate::compute::{ComputeFn, InvocationArgs, Output};

use crate::vtable::{NotSupported, VTable};

pub trait ComputeVTable<V: VTable> {

    /// Dynamically invokes the given compute function on the array.

    ///

    /// Returns `None` if the compute function is not supported by this array, otherwise attempts

    /// to invoke the function.

    ///

    /// This can be useful to support compute functions based on some property of the function,

    /// without knowing at compile-time what that function is. For example, any elementwise

    /// function can be pushed-down over a dictionary array and evaluated only on the unique values.

    fn invoke(

        array: &V::Array,

        compute_fn: &ComputeFn,

        args: &InvocationArgs,

    ) -> VortexResult<Option<Output>>;

}

impl<V: VTable> ComputeVTable<V> for NotSupported {

}