datafusion_expr::function

Struct PartitionEvaluatorArgs

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pub struct PartitionEvaluatorArgs<'a> { /* private fields */ }
Expand description

Arguments passed to created user-defined window function state during physical execution.

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impl<'a> PartitionEvaluatorArgs<'a>

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pub fn new( input_exprs: &'a [Arc<dyn PhysicalExpr>], input_types: &'a [DataType], is_reversed: bool, ignore_nulls: bool, ) -> PartitionEvaluatorArgs<'a>

Create an instance of PartitionEvaluatorArgs.

§Arguments
  • input_exprs - The expressions passed as arguments to the user-defined window function.
  • input_types - The data types corresponding to the arguments to the user-defined window function.
  • is_reversed - Set to true if and only if the user-defined window function is reversible and is reversed.
  • ignore_nulls - Set to true when IGNORE NULLS is specified.
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pub fn input_exprs(&self) -> &'a [Arc<dyn PhysicalExpr>]

Returns the expressions passed as arguments to the user-defined window function.

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pub fn input_types(&self) -> &'a [DataType]

Returns the DataTypes corresponding to the input expressions to the user-defined window function.

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pub fn is_reversed(&self) -> bool

Returns true when the user-defined window function is reversed, otherwise returns false.

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pub fn ignore_nulls(&self) -> bool

Returns true when IGNORE NULLS is specified, otherwise returns false.

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impl<'a> Debug for PartitionEvaluatorArgs<'a>

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

Formats the value using the given formatter. Read more
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impl<'a> Default for PartitionEvaluatorArgs<'a>

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fn default() -> PartitionEvaluatorArgs<'a>

Returns the “default value” for a type. Read more

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

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fn type_id(&self) -> TypeId

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where T: ?Sized,

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fn borrow(&self) -> &T

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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T, U> TryFrom<U> for 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

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

Performs the conversion.