Struct AggType

pub struct AggType {
    pub kind: i32,
    pub udf_meta: Option<UserDefinedFunctionMetadata>,
    pub scalar_expr: Option<ExprNode>,
}

The aggregation type.

Ideally this should be used to encode the Rust AggCall::agg_type field, but historically we flattened it into multiple fields in proto AggCall - kind + udf + scalar. So this AggType proto type is only used by WindowFunction currently.

Fields

kind: i32

udf_meta: Option<UserDefinedFunctionMetadata>

UDF metadata. Only present when the kind is USER_DEFINED.

scalar_expr: Option<ExprNode>

Wrapped scalar expression. Only present when the kind is WRAP_SCALAR.

Implementations

impl AggType

pub fn kind(&self) -> Kind

Returns the enum value of kind, or the default if the field is set to an invalid enum value.

pub fn set_kind(&mut self, value: Kind)

Sets kind to the provided enum value.

impl AggType

pub fn get_kind(&self) -> Result<Kind, PbFieldNotFound>

pub fn get_udf_meta( &self, ) -> Result<&UserDefinedFunctionMetadata, PbFieldNotFound>

pub fn get_scalar_expr(&self) -> Result<&ExprNode, PbFieldNotFound>

Trait Implementations

impl Clone for AggType

fn clone(&self) -> AggType

Returns a copy 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 Default for AggType

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for AggType

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Message for AggType

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

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 Serialize for AggType

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AggType