Trait Matcher 

pub trait Matcher:
    Send
    + Sync
    + 'static {
    type View<'a>;

    // Required methods
    fn key(&self) -> MatchKey;
    fn try_match<'a>(&self, array: &'a ArrayRef) -> Option<Self::View<'a>>;
}

Trait for matching array types in optimizer rules

Required Associated Types

type View<'a>

Required Methods

fn key(&self) -> MatchKey

Return the key for this matcher

fn try_match<'a>(&self, array: &'a ArrayRef) -> Option<Self::View<'a>>

Try to match the given array to this matcher type

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl Matcher for AnyScalarFn

type View<'a> = &'a ScalarFnArray

impl Matcher for AnyArray

type View<'a> = &'a Arc<dyn Array>

impl<F: VTable> Matcher for ExactScalarFn<F>

type View<'a> = ScalarFnArrayView<'a, F>

impl<V: VTable> Matcher for Exact<V>

type View<'a> = &'a <V as VTable>::Array