pub struct CompositeCastEliminator;Expand description
Rewrite the expression of index item to eliminate CompositeCast, if any. This is needed
if the type of a column was changed and there’s functional index on it.
§Example
Imagine there’s a table created with CREATE TABLE t (v struct<a int, b int>).
Then we create an index on it with CREATE INDEX idx ON t ((v).a), which will create an
index item Field(InputRef(0), 0).
If we alter the column with ALTER TABLE t ALTER COLUMN v TYPE struct<x varchar, a int>,
the meta service will wrap the InputRef(0) with a CompositeCast to maintain the correct
return type. The index item will now become Field(CompositeCast(InputRef(0)), 0).
CompositeCast is for internal use only, and cannot be constructed or executed. To allow
this functional index to work and be matched with user queries, we need to eliminate it
here. By comparing the input and output types of CompositeCast and matching the field id,
we can find the real Field index and rewrite it to Field(InputRef(0), 1).
Note that if the field is dropped, we will leave the index item as is. This makes the index item invalid, and it will never be matched and used.
Trait Implementations§
Source§impl ExprRewriter for CompositeCastEliminator
impl ExprRewriter for CompositeCastEliminator
fn rewrite_function_call(&mut self, func_call: FunctionCall) -> ExprImpl
fn rewrite_expr(&mut self, expr: ExprImpl) -> ExprImpl
fn rewrite_function_call_with_lambda( &mut self, func_call: FunctionCallWithLambda, ) -> ExprImpl
fn rewrite_agg_call(&mut self, agg_call: AggCall) -> ExprImpl
fn rewrite_parameter(&mut self, parameter: Parameter) -> ExprImpl
fn rewrite_literal(&mut self, literal: Literal) -> ExprImpl
fn rewrite_input_ref(&mut self, input_ref: InputRef) -> ExprImpl
fn rewrite_subquery(&mut self, subquery: Subquery) -> ExprImpl
fn rewrite_table_function(&mut self, table_func: TableFunction) -> ExprImpl
fn rewrite_window_function(&mut self, window_func: WindowFunction) -> ExprImpl
fn rewrite_user_defined_function( &mut self, udf: UserDefinedFunction, ) -> ExprImpl
fn rewrite_now(&mut self, now: Now) -> ExprImpl
Auto Trait Implementations§
impl Freeze for CompositeCastEliminator
impl RefUnwindSafe for CompositeCastEliminator
impl Send for CompositeCastEliminator
impl Sync for CompositeCastEliminator
impl Unpin for CompositeCastEliminator
impl UnwindSafe for CompositeCastEliminator
Blanket Implementations§
§impl<T> AsAny for T
impl<T> AsAny for T
§fn any_ref(&self) -> &(dyn Any + Send + Sync + 'static)
fn any_ref(&self) -> &(dyn Any + Send + Sync + 'static)
Obtains a
dyn Any reference to the object: Read more§fn as_any(self: Arc<T>) -> Arc<dyn Any + Send + Sync>
fn as_any(self: Arc<T>) -> Arc<dyn Any + Send + Sync>
Obtains an
Arc<dyn Any> reference to the object: Read more§fn into_any(self: Box<T>) -> Box<dyn Any + Send + Sync>
fn into_any(self: Box<T>) -> Box<dyn Any + Send + Sync>
Converts the object to
Box<dyn Any>: Read more§fn type_name(&self) -> &'static str
fn type_name(&self) -> &'static str
Convenient wrapper for
std::any::type_name, since Any does not provide it and
Any::type_id is useless as a debugging aid (its Debug is just a mess of hex digits).Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
§impl<T> Conv for T
impl<T> Conv for T
§impl<Choices> CoproductSubsetter<CNil, HNil> for Choices
impl<Choices> CoproductSubsetter<CNil, HNil> for Choices
§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
Converts
Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>, which can then be
downcast into Box<dyn ConcreteType> where ConcreteType implements Trait.§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Converts
Rc<Trait> (where Trait: Downcast) to Rc<Any>, which can then be further
downcast into Rc<ConcreteType> where ConcreteType implements Trait.§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Converts
&Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &Any’s vtable from &Trait’s.§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Converts
&mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &mut Any’s vtable from &mut Trait’s.§impl<T> DowncastSend for T
impl<T> DowncastSend for T
§impl<T> DowncastSync for T
impl<T> DowncastSync for T
§impl<T> FmtForward for T
impl<T> FmtForward for T
§fn fmt_binary(self) -> FmtBinary<Self>where
Self: Binary,
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,
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,
fn fmt_lower_exp(self) -> FmtLowerExp<Self>where
Self: LowerExp,
Causes
self to use its LowerExp implementation when
Debug-formatted.§fn fmt_lower_hex(self) -> FmtLowerHex<Self>where
Self: LowerHex,
fn fmt_lower_hex(self) -> FmtLowerHex<Self>where
Self: LowerHex,
Causes
self to use its LowerHex implementation when
Debug-formatted.§fn fmt_octal(self) -> FmtOctal<Self>where
Self: Octal,
fn fmt_octal(self) -> FmtOctal<Self>where
Self: Octal,
Causes
self to use its Octal implementation when Debug-formatted.§fn fmt_pointer(self) -> FmtPointer<Self>where
Self: Pointer,
fn fmt_pointer(self) -> FmtPointer<Self>where
Self: Pointer,
Causes
self to use its Pointer implementation when
Debug-formatted.§fn fmt_upper_exp(self) -> FmtUpperExp<Self>where
Self: UpperExp,
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,
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,
fn fmt_list(self) -> FmtList<Self>where
&'a Self: for<'a> IntoIterator,
Formats each item in a sequence. Read more
§impl<T> FutureExt for T
impl<T> FutureExt for T
§fn with_context(self, otel_cx: Context) -> WithContext<Self>
fn with_context(self, otel_cx: Context) -> WithContext<Self>
§fn with_current_context(self) -> WithContext<Self>
fn with_current_context(self) -> WithContext<Self>
§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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 moreSource§impl<T> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
Source§fn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
Wrap the input message
T in a tonic::Request§impl<T> IntoResult<T> for T
impl<T> IntoResult<T> for T
type Err = Infallible
fn into_result(self) -> Result<T, <T as IntoResult<T>>::Err>
Creates a shared type from an unshared type.
§impl<T, U, I> LiftInto<U, I> for Twhere
U: LiftFrom<T, I>,
impl<T, U, I> LiftInto<U, I> for Twhere
U: LiftFrom<T, I>,
§impl<M> MetricVecRelabelExt for M
impl<M> MetricVecRelabelExt for M
§fn relabel(
self,
metric_level: MetricLevel,
relabel_threshold: MetricLevel,
) -> RelabeledMetricVec<M>
fn relabel( self, metric_level: MetricLevel, relabel_threshold: MetricLevel, ) -> RelabeledMetricVec<M>
Equivalent to [
RelabeledMetricVec::with_metric_level].§fn relabel_n(
self,
metric_level: MetricLevel,
relabel_threshold: MetricLevel,
relabel_num: usize,
) -> RelabeledMetricVec<M>
fn relabel_n( self, metric_level: MetricLevel, relabel_threshold: MetricLevel, relabel_num: usize, ) -> RelabeledMetricVec<M>
Equivalent to [
RelabeledMetricVec::with_metric_level_relabel_n].§fn relabel_debug_1(
self,
relabel_threshold: MetricLevel,
) -> RelabeledMetricVec<M>
fn relabel_debug_1( self, relabel_threshold: MetricLevel, ) -> RelabeledMetricVec<M>
Equivalent to [
RelabeledMetricVec::with_metric_level_relabel_n] with metric_level set to
MetricLevel::Debug and relabel_num set to 1.§impl<T> Pipe for Twhere
T: ?Sized,
impl<T> Pipe for Twhere
T: ?Sized,
§fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> Rwhere
Self: Sized,
fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> Rwhere
Self: Sized,
Pipes by value. This is generally the method you want to use. Read more
§fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> Rwhere
R: 'a,
fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> Rwhere
R: 'a,
Borrows
self and passes that borrow into the pipe function. Read more§fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> Rwhere
R: 'a,
fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> Rwhere
R: 'a,
Mutably borrows
self and passes that borrow into the pipe function. Read more§fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R
§fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R,
) -> R
fn pipe_borrow_mut<'a, B, R>( &'a mut self, func: impl FnOnce(&'a mut B) -> R, ) -> R
§fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
Borrows
self, then passes self.as_ref() into the pipe function.§fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
Mutably borrows
self, then passes self.as_mut() into the pipe
function.§fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
Borrows
self, then passes self.deref() into the pipe function.§impl<T> Pointable for T
impl<T> Pointable for T
§impl<T> Scope for T
impl<T> Scope for T
§impl<Source> Sculptor<HNil, HNil> for Source
impl<Source> Sculptor<HNil, HNil> for Source
§impl<T> Tap for T
impl<T> Tap for T
§fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
Immutable access to the
Borrow<B> of a value. Read more§fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
Mutable access to the
BorrowMut<B> of a value. Read more§fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
Immutable access to the
AsRef<R> view of a value. Read more§fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
Mutable access to the
AsMut<R> view of a value. Read more§fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
Immutable access to the
Deref::Target of a value. Read more§fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
Mutable access to the
Deref::Target of a value. Read more§fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self
fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self
Calls
.tap() only in debug builds, and is erased in release builds.§fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self
fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self
Calls
.tap_mut() only in debug builds, and is erased in release
builds.§fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
Calls
.tap_borrow() only in debug builds, and is erased in release
builds.§fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
Calls
.tap_borrow_mut() only in debug builds, and is erased in release
builds.§fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
Calls
.tap_ref() only in debug builds, and is erased in release
builds.§fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
Calls
.tap_ref_mut() only in debug builds, and is erased in release
builds.§fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
Calls
.tap_deref() only in debug builds, and is erased in release
builds.