vortex-array 0.68.0

Vortex in memory columnar data format
Documentation 
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// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: Copyright the Vortex contributors

use vortex_error::VortexResult;

use crate::ArrayRef;
use crate::ExecutionCtx;
use crate::IntoArray;
use crate::array::ArrayView;
use crate::arrays::ConstantArray;
use crate::arrays::Extension;
use crate::arrays::extension::ExtensionArrayExt;
use crate::builtins::ArrayBuiltins;
use crate::scalar_fn::fns::binary::CompareKernel;
use crate::scalar_fn::fns::operators::CompareOperator;
use crate::scalar_fn::fns::operators::Operator;

impl CompareKernel for Extension {
    fn compare(
        lhs: ArrayView<'_, Extension>,
        rhs: &ArrayRef,
        operator: CompareOperator,
        _ctx: &mut ExecutionCtx,
    ) -> VortexResult<Option<ArrayRef>> {
        // If the RHS is a constant, we can extract the storage scalar.
        if let Some(const_ext) = rhs.as_constant() {
            let storage_scalar = const_ext.as_extension().to_storage_scalar();
            return lhs
                .storage_array()
                .clone()
                .binary(
                    ConstantArray::new(storage_scalar, lhs.len()).into_array(),
                    Operator::from(operator),
                )
                .map(Some);
        }

        // If the RHS is an extension array matching ours, we can extract the storage.
        if let Some(rhs_ext) = rhs.as_opt::<Extension>() {
            return lhs
                .storage_array()
                .clone()
                .binary(rhs_ext.storage_array().clone(), Operator::from(operator))
                .map(Some);
        }

        // Otherwise, we need the RHS to handle this comparison.
        Ok(None)
    }
}