Struct tidb_query_aggr::AllAggrDefinitionParser [−][src]
Parse all aggregate function definition from protobuf.
Trait Implementations
impl AggrDefinitionParser for AllAggrDefinitionParser[src]
fn check_supported(&self, aggr_def: &Expr) -> Result<()>[src]
Checks whether the aggregate function definition is supported.
fn parse(
&self,
aggr_def: Expr,
ctx: &mut EvalContext,
src_schema: &[FieldType],
out_schema: &mut Vec<FieldType>,
out_exp: &mut Vec<RpnExpression>
) -> Result<Box<dyn AggrFunction>>[src]
&self,
aggr_def: Expr,
ctx: &mut EvalContext,
src_schema: &[FieldType],
out_schema: &mut Vec<FieldType>,
out_exp: &mut Vec<RpnExpression>
) -> Result<Box<dyn AggrFunction>>
Parses and transforms the aggregate function definition to generate corresponding
AggrFunction instance.
Panic
May panic if the aggregate function definition is not supported.
fn parse_rpn(
&self,
_root_expr: Expr,
_exp: RpnExpression,
_ctx: &mut EvalContext,
_src_schema: &[FieldType],
_out_schema: &mut Vec<FieldType>,
_out_exp: &mut Vec<RpnExpression>
) -> Result<Box<dyn AggrFunction>>[src]
&self,
_root_expr: Expr,
_exp: RpnExpression,
_ctx: &mut EvalContext,
_src_schema: &[FieldType],
_out_schema: &mut Vec<FieldType>,
_out_exp: &mut Vec<RpnExpression>
) -> Result<Box<dyn AggrFunction>>
Auto Trait Implementations
impl RefUnwindSafe for AllAggrDefinitionParser
impl Send for AllAggrDefinitionParser
impl Sync for AllAggrDefinitionParser
impl Unpin for AllAggrDefinitionParser
impl UnwindSafe for AllAggrDefinitionParser
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T[src]
impl<V, W> ConvertFrom<W> for V where
W: ConvertTo<V>, [src]
W: ConvertTo<V>,
pub fn convert_from(ctx: &mut EvalContext, from: W) -> Result<V, Error>[src]
impl<T> From<T> for T[src]
impl<T> Instrument for T[src]
pub fn instrument(self, span: Span) -> Instrumented<Self>[src]
pub fn in_current_span(self) -> Instrumented<Self>[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<T> Pointable for T[src]
pub const ALIGN: usize[src]
type Init = T
The type for initializers.
pub unsafe fn init(init: <T as Pointable>::Init) -> usize[src]
pub unsafe fn deref<'a>(ptr: usize) -> &'a T[src]
pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T[src]
pub unsafe fn drop(ptr: usize)[src]
impl<T> Same<T> for T[src]
type Output = T
Should always be Self
impl<T> Sealed<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> SendSyncUnwindSafe for T where
T: Send + Sync + UnwindSafe + ?Sized, [src]
T: Send + Sync + UnwindSafe + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
impl<V, T> VZip<V> for T where
V: MultiLane<T>, [src]
V: MultiLane<T>,