Struct mz_sql::func::Operation

pub struct Operation<R>(pub Box<dyn Fn(&ExprContext<'_>, Vec<CoercibleScalarExpr>, &ParamList, Vec<ColumnOrder>) -> Result<R, PlanError> + Send + Sync>);

Expand description

Builds an expression that evaluates a scalar function on the provided input expressions.

Tuple Fields§

0: Box<dyn Fn(&ExprContext<'_>, Vec<CoercibleScalarExpr>, &ParamList, Vec<ColumnOrder>) -> Result<R, PlanError> + Send + Sync>

Implementations§

impl Operation<HirScalarExpr>

fn identity() -> Operation<HirScalarExpr>

Builds a unary operation that simply returns its input.

impl<R> Operation<R>

fn new<F>(f: F) -> Operation<R>
where F: Fn(&ExprContext<'_>, Vec<CoercibleScalarExpr>, &ParamList, Vec<ColumnOrder>) -> Result<R, PlanError> + Send + Sync + 'static,

fn nullary<F>(f: F) -> Operation<R>
where F: Fn(&ExprContext<'_>) -> Result<R, PlanError> + Send + Sync + 'static,

Builds an operation that takes no arguments.

fn unary<F>(f: F) -> Operation<R>
where F: Fn(&ExprContext<'_>, HirScalarExpr) -> Result<R, PlanError> + Send + Sync + 'static,

Builds an operation that takes one argument.

fn unary_ordered<F>(f: F) -> Operation<R>
where F: Fn(&ExprContext<'_>, HirScalarExpr, Vec<ColumnOrder>) -> Result<R, PlanError> + Send + Sync + 'static,

Builds an operation that takes one argument and an order_by.

fn binary<F>(f: F) -> Operation<R>
where F: Fn(&ExprContext<'_>, HirScalarExpr, HirScalarExpr) -> Result<R, PlanError> + Send + Sync + 'static,

Builds an operation that takes two arguments.

fn binary_ordered<F>(f: F) -> Operation<R>
where F: Fn(&ExprContext<'_>, HirScalarExpr, HirScalarExpr, Vec<ColumnOrder>) -> Result<R, PlanError> + Send + Sync + 'static,

Builds an operation that takes two arguments and an order_by.

If returning an aggregate function, it should return true for AggregateFunc::is_order_sensitive.

fn variadic<F>(f: F) -> Operation<R>
where F: Fn(&ExprContext<'_>, Vec<HirScalarExpr>) -> Result<R, PlanError> + Send + Sync + 'static,

Builds an operation that takes any number of arguments.

Trait Implementations§

impl<R> Debug for Operation<R>

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

Formats the value using the given formatter. Read more

impl From<AggregateFunc> for Operation<(HirScalarExpr, AggregateFunc)>

fn from(a: AggregateFunc) -> Operation<(HirScalarExpr, AggregateFunc)>

Converts to this type from the input type.

impl From<BinaryFunc> for Operation<HirScalarExpr>

fn from(b: BinaryFunc) -> Operation<HirScalarExpr>

Converts to this type from the input type.

impl From<ScalarWindowFunc> for Operation<ScalarWindowFunc>

fn from(a: ScalarWindowFunc) -> Operation<ScalarWindowFunc>

Converts to this type from the input type.

impl From<UnaryFunc> for Operation<HirScalarExpr>

fn from(u: UnaryFunc) -> Operation<HirScalarExpr>

Converts to this type from the input type.

impl From<UnmaterializableFunc> for Operation<HirScalarExpr>

fn from(n: UnmaterializableFunc) -> Operation<HirScalarExpr>

Converts to this type from the input type.

impl From<ValueWindowFunc> for Operation<(HirScalarExpr, ValueWindowFunc)>

fn from(a: ValueWindowFunc) -> Operation<(HirScalarExpr, ValueWindowFunc)>

Converts to this type from the input type.

impl From<VariadicFunc> for Operation<HirScalarExpr>

fn from(v: VariadicFunc) -> Operation<HirScalarExpr>

Converts to this type from the input type.

Auto Trait Implementations§

impl<R> Freeze for Operation<R>

impl<R> !RefUnwindSafe for Operation<R>

impl<R> Send for Operation<R>

impl<R> Sync for Operation<R>

impl<R> Unpin for Operation<R>

impl<R> !UnwindSafe for Operation<R>

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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where T: Any,

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Immutably borrows from an owned value. Read more

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

Mutably borrows from an owned value. Read more

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Performs the cast.

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Converts self into T using Into<T>. Read more

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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.

fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.

fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.

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where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.

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Causes self to use its Octal implementation when Debug-formatted.

fn fmt_pointer(self) -> FmtPointer<Self>
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Causes self to use its Pointer implementation when Debug-formatted.

fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.

fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.

fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more

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Returns the argument unchanged.

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