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ScalarFunction

akar_function::registry

Enum ScalarFunction 

Source 
pub enum ScalarFunction {

Show 20 variants    Arithmetic {
        op: ArithmeticOp,
    },
    Comparison {
        op: ComparisonOp,
    },
    String {
        op: StringOp,
    },
    Cast {
        target_type: CastTarget,
    },
    Date {
        op: DateOp,
    },
    List {
        op: ListOp,
    },
    Map {
        op: MapOp,
    },
    Struct {
        op: StructOp,
    },
    Boolean {
        op: BooleanOp,
    },
    Utility {
        op: UtilityOp,
    },
    Schema {
        op: SchemaOp,
    },
    Array {
        op: ArrayOp,
    },
    Path {
        op: PathOp,
    },
    Uuid,
    CustomScalar {
        name: String,
        execute: Arc<dyn Fn(&[Value]) -> Result<Value, String> + Send + Sync>,
    },
    SequenceOp {
        is_nextval: bool,
    },
    Hash {
        op: HashOp,
    },
    Interval {
        op: IntervalOp,
    },
    Blob {
        op: BlobOp,
    },
    Union {
        op: UnionOp,
    },

}
Expand description

All built-in scalar function variants.

Variants§

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Arithmetic

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§op: ArithmeticOp
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Comparison

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§op: ComparisonOp
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String

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§op: StringOp
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Cast

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§target_type: CastTarget
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Date

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§op: DateOp
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List

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§op: ListOp
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Map

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§op: MapOp
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Struct

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§op: StructOp
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Boolean

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§op: BooleanOp
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Utility

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§op: UtilityOp
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Schema

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§op: SchemaOp
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Array

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§op: ArrayOp
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Path

Path functions — operate on recursive rel / path values.

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§op: PathOp
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Uuid

UUID function — generates random UUIDs.

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CustomScalar

Extension-provided scalar function with a callback closure. The closure receives input values and returns an output value.

Fields

§name: String
§execute: Arc<dyn Fn(&[Value]) -> Result<Value, String> + Send + Sync>
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SequenceOp

Sequence operation (nextval/currval) — requires catalog access. Resolved at the connection/processor level where the catalog is available.

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§is_nextval: bool
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Hash

Hash functions — MD5, SHA256, generic HASH.

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§op: HashOp
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Interval

Interval constructor functions.

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§op: IntervalOp
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Blob

Blob functions — ENCODE, DECODE, OCTET_LENGTH.

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§op: BlobOp
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Union

Union functions — UNION_VALUE, UNION_TAG, UNION_EXTRACT.

Fields

§op: UnionOp

Trait Implementations§

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impl Clone for ScalarFunction

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fn clone(&self) -> ScalarFunction

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for ScalarFunction

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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

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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
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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> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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

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.