vortex_array/vtable/
compute.rs

1use vortex_error::VortexResult;
2
3use crate::compute::{ComputeFn, InvocationArgs, Output};
4use crate::vtable::{NotSupported, VTable};
5
6pub trait ComputeVTable<V: VTable> {
7    /// Dynamically invokes the given compute function on the array.
8    ///
9    /// Returns `None` if the compute function is not supported by this array, otherwise attempts
10    /// to invoke the function.
11    ///
12    /// This can be useful to support compute functions based on some property of the function,
13    /// without knowing at compile-time what that function is. For example, any elementwise
14    /// function can be pushed-down over a dictionary array and evaluated only on the unique values.
15    fn invoke(
16        array: &V::Array,
17        compute_fn: &ComputeFn,
18        args: &InvocationArgs,
19    ) -> VortexResult<Option<Output>>;
20}
21
22impl<V: VTable> ComputeVTable<V> for NotSupported {
23    fn invoke(
24        _array: &V::Array,
25        _compute_fn: &ComputeFn,
26        _args: &InvocationArgs,
27    ) -> VortexResult<Option<Output>> {
28        Ok(None)
29    }
30}
vortex_array/vtable/compute.rs

vortex_array/vtable/
compute.rs
