Skip to main content

Expr

substrait_explain::extensions::args

Struct Expr

pub struct Expr(Box<Expression>);

Expand description

A Substrait expression carried as an extension argument or output column.

Boxed because proto::Expression is large (multiple Vec fields in variants like ScalarFunction).

Tuple Fields§

§0: Box<Expression>

Implementations§

impl Expr

pub fn as_proto(&self) -> &Expression

Borrow the underlying Substrait expression protobuf.

pub fn to_proto(&self) -> Expression

Clone the underlying Substrait expression protobuf.

pub fn as_direct_reference(&self) -> Option<Reference>

If this expression is a direct field reference ($N), return it.

Trait Implementations§

impl Clone for Expr

fn clone(&self) -> Expr

Returns a duplicate of the value. Read more

1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Debug for Expr

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

impl From<&str> for Expr

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<Expr> for Expression

fn from(expr: Expr) -> Self

Converts to this type from the input type.

impl From<Expr> for ExtensionValue

fn from(expr: Expr) -> Self

Converts to this type from the input type.

impl From<Expression> for Expr

fn from(expr: Expression) -> Self

Converts to this type from the input type.

impl From<Literal> for Expr

fn from(literal: Literal) -> Self

Converts to this type from the input type.

impl From<Reference> for Expr

fn from(reference: Reference) -> Self

Converts to this type from the input type.

impl From<String> for Expr

fn from(value: String) -> Self

Converts to this type from the input type.

impl From<bool> for Expr

fn from(value: bool) -> Self

Converts to this type from the input type.

impl From<f64> for Expr

fn from(value: f64) -> Self

Converts to this type from the input type.

impl From<i64> for Expr

fn from(value: i64) -> Self

Converts to this type from the input type.

impl Textify for Expr

fn name() -> &'static str

fn textify<S: Scope, W: Write>(&self, ctx: &S, w: &mut W) -> Result

impl TryFrom<&ExtensionValue> for Expr

type Error = ExtensionError

The type returned in the event of a conversion error.

fn try_from(value: &ExtensionValue) -> Result<Expr, Self::Error>

Performs the conversion.

Auto Trait Implementations§

impl Freeze for Expr

impl RefUnwindSafe for Expr

impl Send for Expr

impl Sync for Expr

impl Unpin for Expr

impl UnsafeUnpin for Expr

impl UnwindSafe for Expr

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.