VirtualReadRel

substrait_explain::parser::relations

Struct VirtualReadRel 

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pub(crate) struct VirtualReadRel(ReadRel);
Expand description

Parsed Read:Virtual[rows => columns] relation. Needs a newtype because the proto type is ReadRel (same as NamedTable), but the grammar and handling are different.

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§0: ReadRel

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impl RelationParsePair for VirtualReadRel

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fn rule() -> Rule

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fn message() -> &'static str

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fn parse_pair_with_context( extensions: &SimpleExtensions, pair: Pair<'_, Rule>, input_children: Vec<Box<Rel>>, _input_field_count: usize, ) -> Result<(Self, usize), MessageParseError>

Parse the grammar pair into this relation type and its output field count. Read more
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fn into_rel(self, adv_ext: Option<AdvancedExtension>) -> Rel

Consume this parsed relation, apply the advanced extension, and produce the final Rel.

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Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.