Enum AggType 

pub enum AggType {
    Builtin(PbAggKind),
    UserDefined(PbUserDefinedFunctionMetadata),
    WrapScalar(PbExprNode),
}

Aggregate function kind.

Variants

Builtin(PbAggKind)

Built-in aggregate function.

The associated value should not be UserDefined or WrapScalar.

UserDefined(PbUserDefinedFunctionMetadata)

User defined aggregate function.

WrapScalar(PbExprNode)

Wrap a scalar function that takes a list as input as an aggregation function.

Implementations

impl AggType

pub fn is_builtin(&self) -> bool

Returns true if this is a AggType::Builtin, otherwise false

pub fn as_builtin_mut(&mut self) -> Option<&mut PbAggKind>

Optionally returns mutable references to the inner fields if this is a AggType::Builtin, otherwise None

pub fn as_builtin(&self) -> Option<&PbAggKind>

Optionally returns references to the inner fields if this is a AggType::Builtin, otherwise None

pub fn into_builtin(self) -> Result<PbAggKind, Self>

Returns the inner fields if this is a AggType::Builtin, otherwise returns back the enum in the Err case of the result

pub fn is_user_defined(&self) -> bool

Returns true if this is a AggType::UserDefined, otherwise false

pub fn as_user_defined_mut( &mut self, ) -> Option<&mut PbUserDefinedFunctionMetadata>

Optionally returns mutable references to the inner fields if this is a AggType::UserDefined, otherwise None

pub fn as_user_defined(&self) -> Option<&PbUserDefinedFunctionMetadata>

Optionally returns references to the inner fields if this is a AggType::UserDefined, otherwise None

pub fn into_user_defined(self) -> Result<PbUserDefinedFunctionMetadata, Self>

Returns the inner fields if this is a AggType::UserDefined, otherwise returns back the enum in the Err case of the result

pub fn is_wrap_scalar(&self) -> bool

Returns true if this is a AggType::WrapScalar, otherwise false

pub fn as_wrap_scalar_mut(&mut self) -> Option<&mut PbExprNode>

Optionally returns mutable references to the inner fields if this is a AggType::WrapScalar, otherwise None

pub fn as_wrap_scalar(&self) -> Option<&PbExprNode>

Optionally returns references to the inner fields if this is a AggType::WrapScalar, otherwise None

pub fn into_wrap_scalar(self) -> Result<PbExprNode, Self>

Returns the inner fields if this is a AggType::WrapScalar, otherwise returns back the enum in the Err case of the result

impl AggType

pub fn from_protobuf_flatten( pb_kind: PbAggKind, user_defined: Option<&PbUserDefinedFunctionMetadata>, scalar: Option<&PbExprNode>, ) -> Result<Self>

pub fn to_protobuf_simple(&self) -> PbAggKind

pub fn from_protobuf(pb_type: &PbAggType) -> Result<Self>

pub fn to_protobuf(&self) -> PbAggType

impl AggType

pub fn partial_to_total(&self) -> Option<Self>

Get the total phase agg kind from the partial phase agg kind.

Trait Implementations

impl Clone for AggType

fn clone(&self) -> AggType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AggType

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

Formats the value using the given formatter.

impl Display for AggType

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

Formats the value using the given formatter.

impl From<Kind> for AggType

fn from(pb: PbAggKind) -> Self

Converts to this type from the input type.

impl FromStr for AggType

FromStr for builtin aggregate functions.

type Err = ()

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for AggType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for AggType

fn eq(&self, other: &AggType) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for AggType

impl StructuralPartialEq for AggType